{"id":18360,"date":"2021-01-21T07:13:58","date_gmt":"2021-01-21T07:13:58","guid":{"rendered":"https:\/\/www.dumpsbase.com\/freedumps\/?p=18360"},"modified":"2021-01-21T07:14:00","modified_gmt":"2021-01-21T07:14:00","slug":"apache-hadoop-developer-dumps-released-for-hadoop-2-0-certification-exam-for-pig-and-hive-developer","status":"publish","type":"post","link":"https:\/\/www.dumpsbase.com\/freedumps\/apache-hadoop-developer-dumps-released-for-hadoop-2-0-certification-exam-for-pig-and-hive-developer.html","title":{"rendered":"Apache Hadoop Developer Dumps Released for Hadoop 2.0 Certification exam for Pig and Hive Developer"},"content":{"rendered":"\n<p>Hadoop 2.0 Certification exam for Pig and Hive Developer certification exam is hot, which help you be a Hadoop Developer in IT areas. If you are preparing for Apache Hadoop Developer exam, you can choose DumpsBase Apache Hadoop Developer dumps as the preparation materials. Real Apache Hadoop Developer dumps contain 108 exam Q&amp;As, you can read them for passing Apache Hadoop Developer exam.<\/p>\n<h2>Checking <span style=\"color: #800000;\">Apache Hadoop Developer free dumps<\/span> is required.<\/h2>\n<script>\n\t  window.fbAsyncInit = function() {\n\t    FB.init({\n\t      appId            : '622169541470367',\n\t      autoLogAppEvents : true,\n\t      xfbml            : true,\n\t      version          : 'v3.1'\n\t    });\n\t  };\n\t\n\t  (function(d, s, id){\n\t     var js, fjs = d.getElementsByTagName(s)[0];\n\t     if (d.getElementById(id)) {return;}\n\t     js = d.createElement(s); js.id = id;\n\t     js.src = \"https:\/\/connect.facebook.net\/en_US\/sdk.js\";\n\t     fjs.parentNode.insertBefore(js, fjs);\n\t   }(document, 'script', 'facebook-jssdk'));\n\t<\/script><script type=\"text\/javascript\" >\ndocument.addEventListener(\"DOMContentLoaded\", function(event) { \nif(!window.jQuery) alert(\"The important jQuery library is not properly loaded in your site. Your WordPress theme is probably missing the essential wp_head() call. You can switch to another theme and you will see that the plugin works fine and this notice disappears. If you are still not sure what to do you can contact us for help.\");\n});\n<\/script>  \n  \n<div  id=\"watupro_quiz\" class=\"quiz-area single-page-quiz\">\n<p id=\"submittingExam5036\" style=\"display:none;text-align:center;\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.dumpsbase.com\/freedumps\/wp-content\/plugins\/watupro\/img\/loading.gif\" width=\"16\" height=\"16\"><\/p>\n\n<div class=\"watupro-exam-description\" id=\"description-quiz-5036\"><\/div>\n\n<form action=\"\" method=\"post\" class=\"quiz-form\" id=\"quiz-5036\"  enctype=\"multipart\/form-data\" >\n<div class='watu-question ' id='question-1' style=';'><div id='questionWrap-1'  class='   watupro-question-id-161955'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>1. <\/span>Which one of the following statements describes a Pig bag. tuple, and map, respectively?<\/div><input type='hidden' name='question_id[]' id='qID_1' value='161955' \/><input type='hidden' id='answerType161955' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161955[]' id='answer-id-656644' class='answer   answerof-161955 ' value='656644'   \/><label for='answer-id-656644' id='answer-label-656644' class=' answer'><span>Unordered collection of maps, ordered collection of tuples, ordered set of key\/value pairs<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161955[]' id='answer-id-656645' class='answer   answerof-161955 ' value='656645'   \/><label for='answer-id-656645' id='answer-label-656645' class=' answer'><span>Unordered collection of tuples, ordered set of fields, set of key value pairs<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161955[]' id='answer-id-656646' class='answer   answerof-161955 ' value='656646'   \/><label for='answer-id-656646' id='answer-label-656646' class=' answer'><span>Ordered set of fields, ordered collection of tuples, ordered collection of maps<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161955[]' id='answer-id-656647' class='answer   answerof-161955 ' value='656647'   \/><label for='answer-id-656647' id='answer-label-656647' class=' answer'><span>Ordered collection of maps, ordered collection of bags, and unordered set of key\/value pairs<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-2' style=';'><div id='questionWrap-2'  class='   watupro-question-id-161956'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>2. <\/span>You want to run Hadoop jobs on your development workstation for testing before you submit them to your production cluster. <br \/>\r<br>Which mode of operation in Hadoop allows you to most closely simulate a production cluster while using a single machine?<\/div><input type='hidden' name='question_id[]' id='qID_2' value='161956' \/><input type='hidden' id='answerType161956' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161956[]' id='answer-id-656648' class='answer   answerof-161956 ' value='656648'   \/><label for='answer-id-656648' id='answer-label-656648' class=' answer'><span>Run all the nodes in your production cluster as virtual machines on your development workstation.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161956[]' id='answer-id-656649' class='answer   answerof-161956 ' value='656649'   \/><label for='answer-id-656649' id='answer-label-656649' class=' answer'><span>Run the hadoop command with the Cjt local and the Cfs file:\/\/\/options.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161956[]' id='answer-id-656650' class='answer   answerof-161956 ' value='656650'   \/><label for='answer-id-656650' id='answer-label-656650' class=' answer'><span>Run the DataNode, TaskTracker, NameNode and JobTracker daemons on a single machine.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161956[]' id='answer-id-656651' class='answer   answerof-161956 ' value='656651'   \/><label for='answer-id-656651' id='answer-label-656651' class=' answer'><span>Run simldooop, the Apache open-source software for simulating Hadoop clusters.<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-3' style=';'><div id='questionWrap-3'  class='   watupro-question-id-161957'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>3. <\/span>Which HDFS command uploads a local file X into an existing HDFS directory Y?<\/div><input type='hidden' name='question_id[]' id='qID_3' value='161957' \/><input type='hidden' id='answerType161957' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161957[]' id='answer-id-656652' class='answer   answerof-161957 ' value='656652'   \/><label for='answer-id-656652' id='answer-label-656652' class=' answer'><span>hadoop scp X Y<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161957[]' id='answer-id-656653' class='answer   answerof-161957 ' value='656653'   \/><label for='answer-id-656653' id='answer-label-656653' class=' answer'><span>hadoop fs -localPut X Y<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161957[]' id='answer-id-656654' class='answer   answerof-161957 ' value='656654'   \/><label for='answer-id-656654' id='answer-label-656654' class=' answer'><span>hadoop fs-put X Y<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161957[]' id='answer-id-656655' class='answer   answerof-161957 ' value='656655'   \/><label for='answer-id-656655' id='answer-label-656655' class=' answer'><span>hadoop fs -get X Y<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-4' style=';'><div id='questionWrap-4'  class='   watupro-question-id-161958'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>4. <\/span>In Hadoop 2.0, which TWO of the following processes work together to provide automatic failover of the NameNode? Choose 2 answers<\/div><input type='hidden' name='question_id[]' id='qID_4' value='161958' \/><input type='hidden' id='answerType161958' value='checkbox'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161958[]' id='answer-id-656656' class='answer   answerof-161958 ' value='656656'   \/><label for='answer-id-656656' id='answer-label-656656' class=' answer'><span>ZKFailoverController<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161958[]' id='answer-id-656657' class='answer   answerof-161958 ' value='656657'   \/><label for='answer-id-656657' id='answer-label-656657' class=' answer'><span>ZooKeeper<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161958[]' id='answer-id-656658' class='answer   answerof-161958 ' value='656658'   \/><label for='answer-id-656658' id='answer-label-656658' class=' answer'><span>QuorumManager<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161958[]' id='answer-id-656659' class='answer   answerof-161958 ' value='656659'   \/><label for='answer-id-656659' id='answer-label-656659' class=' answer'><span>JournalNode<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-5' style=';'><div id='questionWrap-5'  class='   watupro-question-id-161959'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>5. <\/span>To use a lava user-defined function (UDF) with Pig what must you do?<\/div><input type='hidden' name='question_id[]' id='qID_5' value='161959' \/><input type='hidden' id='answerType161959' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161959[]' id='answer-id-656660' class='answer   answerof-161959 ' value='656660'   \/><label for='answer-id-656660' id='answer-label-656660' class=' answer'><span>Define an alias to shorten the function name<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161959[]' id='answer-id-656661' class='answer   answerof-161959 ' value='656661'   \/><label for='answer-id-656661' id='answer-label-656661' class=' answer'><span>Pass arguments to the constructor of UDFs implementation class<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161959[]' id='answer-id-656662' class='answer   answerof-161959 ' value='656662'   \/><label for='answer-id-656662' id='answer-label-656662' class=' answer'><span>Register the JAR file containing the UDF<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161959[]' id='answer-id-656663' class='answer   answerof-161959 ' value='656663'   \/><label for='answer-id-656663' id='answer-label-656663' class=' answer'><span>Put the JAR file into the user&amp;apos;s home folder in HDFS<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-6' style=';'><div id='questionWrap-6'  class='   watupro-question-id-161960'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>6. <\/span>When is the earliest point at which the reduce method of a given Reducer can be called?<\/div><input type='hidden' name='question_id[]' id='qID_6' value='161960' \/><input type='hidden' id='answerType161960' value='checkbox'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161960[]' id='answer-id-656664' class='answer   answerof-161960 ' value='656664'   \/><label for='answer-id-656664' id='answer-label-656664' class=' answer'><span>As soon as at least one mapper has finished processing its input split.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161960[]' id='answer-id-656665' class='answer   answerof-161960 ' value='656665'   \/><label for='answer-id-656665' id='answer-label-656665' class=' answer'><span>As soon as a mapper has emitted at least one record.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161960[]' id='answer-id-656666' class='answer   answerof-161960 ' value='656666'   \/><label for='answer-id-656666' id='answer-label-656666' class=' answer'><span>Not until all mappers have finished processing all records.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161960[]' id='answer-id-656667' class='answer   answerof-161960 ' value='656667'   \/><label for='answer-id-656667' id='answer-label-656667' class=' answer'><span>It depends on the InputFormat used for the job.<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-7' style=';'><div id='questionWrap-7'  class='   watupro-question-id-161961'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>7. <\/span>Which one of the following statements describes the relationship between the ResourceManager and the ApplicationMaster?<\/div><input type='hidden' name='question_id[]' id='qID_7' value='161961' \/><input type='hidden' id='answerType161961' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161961[]' id='answer-id-656668' class='answer   answerof-161961 ' value='656668'   \/><label for='answer-id-656668' id='answer-label-656668' class=' answer'><span>The ApplicationMaster requests resources from the ResourceManager<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161961[]' id='answer-id-656669' class='answer   answerof-161961 ' value='656669'   \/><label for='answer-id-656669' id='answer-label-656669' class=' answer'><span>The ApplicationMaster starts a single instance of the ResourceManager<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161961[]' id='answer-id-656670' class='answer   answerof-161961 ' value='656670'   \/><label for='answer-id-656670' id='answer-label-656670' class=' answer'><span>The ResourceManager monitors and restarts any failed Containers of the ApplicationMaster<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161961[]' id='answer-id-656671' class='answer   answerof-161961 ' value='656671'   \/><label for='answer-id-656671' id='answer-label-656671' class=' answer'><span>The ApplicationMaster starts an instance of the ResourceManager within each Container<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-8' style=';'><div id='questionWrap-8'  class='   watupro-question-id-161962'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>8. <\/span>Which HDFS command copies an HDFS file named foo to the local filesystem as localFoo?<\/div><input type='hidden' name='question_id[]' id='qID_8' value='161962' \/><input type='hidden' id='answerType161962' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161962[]' id='answer-id-656672' class='answer   answerof-161962 ' value='656672'   \/><label for='answer-id-656672' id='answer-label-656672' class=' answer'><span>hadoop fs -get foo LocalFoo<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161962[]' id='answer-id-656673' class='answer   answerof-161962 ' value='656673'   \/><label for='answer-id-656673' id='answer-label-656673' class=' answer'><span>hadoop -cp foo LocalFoo<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161962[]' id='answer-id-656674' class='answer   answerof-161962 ' value='656674'   \/><label for='answer-id-656674' id='answer-label-656674' class=' answer'><span>hadoop fs -Is foo<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161962[]' id='answer-id-656675' class='answer   answerof-161962 ' value='656675'   \/><label for='answer-id-656675' id='answer-label-656675' class=' answer'><span>hadoop fs -put foo LocalFoo<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-9' style=';'><div id='questionWrap-9'  class='   watupro-question-id-161963'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>9. <\/span>You need to perform statistical analysis in your MapReduce job and would like to call methods in the Apache Commons Math library, which is distributed as a 1.3 megabyte Java archive (JAR) file. <br \/>\r<br>Which is the best way to make this library available to your MapReducer job at runtime?<\/div><input type='hidden' name='question_id[]' id='qID_9' value='161963' \/><input type='hidden' id='answerType161963' value='checkbox'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161963[]' id='answer-id-656676' class='answer   answerof-161963 ' value='656676'   \/><label for='answer-id-656676' id='answer-label-656676' class=' answer'><span>Have your system administrator copy the JAR to all nodes in the cluster and set its location in the HADOOP_CLASSPATH environment variable before you submit your job.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161963[]' id='answer-id-656677' class='answer   answerof-161963 ' value='656677'   \/><label for='answer-id-656677' id='answer-label-656677' class=' answer'><span>Have your system administrator place the JAR file on a Web server accessible to all cluster nodes and then set the HTTP_JAR_URL environment variable to its location.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161963[]' id='answer-id-656678' class='answer   answerof-161963 ' value='656678'   \/><label for='answer-id-656678' id='answer-label-656678' class=' answer'><span>When submitting the job on the command line, specify the Clibjars option followed by the JAR file path.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161963[]' id='answer-id-656679' class='answer   answerof-161963 ' value='656679'   \/><label for='answer-id-656679' id='answer-label-656679' class=' answer'><span>Package your code and the Apache Commands Math library into a zip file named JobJar.zip<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-10' style=';'><div id='questionWrap-10'  class='   watupro-question-id-161964'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>10. <\/span>In a MapReduce job with 500 map tasks, how many map task attempts will there be?<\/div><input type='hidden' name='question_id[]' id='qID_10' value='161964' \/><input type='hidden' id='answerType161964' value='checkbox'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161964[]' id='answer-id-656680' class='answer   answerof-161964 ' value='656680'   \/><label for='answer-id-656680' id='answer-label-656680' class=' answer'><span>It depends on the number of reduces in the job.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161964[]' id='answer-id-656681' class='answer   answerof-161964 ' value='656681'   \/><label for='answer-id-656681' id='answer-label-656681' class=' answer'><span>Between 500 and 1000.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161964[]' id='answer-id-656682' class='answer   answerof-161964 ' value='656682'   \/><label for='answer-id-656682' id='answer-label-656682' class=' answer'><span>At most 500.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161964[]' id='answer-id-656683' class='answer   answerof-161964 ' value='656683'   \/><label for='answer-id-656683' id='answer-label-656683' class=' answer'><span>At least 500.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161964[]' id='answer-id-656684' class='answer   answerof-161964 ' value='656684'   \/><label for='answer-id-656684' id='answer-label-656684' class=' answer'><span>Exactly 500.<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-11' style=';'><div id='questionWrap-11'  class='   watupro-question-id-161965'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>11. <\/span>You want to count the number of occurrences for each unique word in the supplied input data. You\u2019ve decided to implement this by having your mapper tokenize each word and emit a literal value 1, and then have your reducer increment a counter for each literal 1 it receives. After successful implementing this, it occurs to you that you could optimize this by specifying a combiner. <br \/>\r<br>Will you be able to reuse your existing Reduces as your combiner in this case and why or why not?<\/div><input type='hidden' name='question_id[]' id='qID_11' value='161965' \/><input type='hidden' id='answerType161965' value='checkbox'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161965[]' id='answer-id-656685' class='answer   answerof-161965 ' value='656685'   \/><label for='answer-id-656685' id='answer-label-656685' class=' answer'><span>Yes, because the sum operation is both associative and commutative and the input and output types to the reduce method match.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161965[]' id='answer-id-656686' class='answer   answerof-161965 ' value='656686'   \/><label for='answer-id-656686' id='answer-label-656686' class=' answer'><span>No, because the sum operation in the reducer is incompatible with the operation of a Combiner.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161965[]' id='answer-id-656687' class='answer   answerof-161965 ' value='656687'   \/><label for='answer-id-656687' id='answer-label-656687' class=' answer'><span>No, because the Reducer and Combiner are separate interfaces.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161965[]' id='answer-id-656688' class='answer   answerof-161965 ' value='656688'   \/><label for='answer-id-656688' id='answer-label-656688' class=' answer'><span>No, because the Combiner is incompatible with a mapper which doesn\u2019t use the same data type for both the key and value.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161965[]' id='answer-id-656689' class='answer   answerof-161965 ' value='656689'   \/><label for='answer-id-656689' id='answer-label-656689' class=' answer'><span>Yes, because Java is a polymorphic object-oriented language and thus reducer code can be reused as a combiner.<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-12' style=';'><div id='questionWrap-12'  class='   watupro-question-id-161966'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>12. <\/span>What data does a Reducer reduce method process?<\/div><input type='hidden' name='question_id[]' id='qID_12' value='161966' \/><input type='hidden' id='answerType161966' value='checkbox'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161966[]' id='answer-id-656690' class='answer   answerof-161966 ' value='656690'   \/><label for='answer-id-656690' id='answer-label-656690' class=' answer'><span>All the data in a single input file.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161966[]' id='answer-id-656691' class='answer   answerof-161966 ' value='656691'   \/><label for='answer-id-656691' id='answer-label-656691' class=' answer'><span>All data produced by a single mapper.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161966[]' id='answer-id-656692' class='answer   answerof-161966 ' value='656692'   \/><label for='answer-id-656692' id='answer-label-656692' class=' answer'><span>All data for a given key, regardless of which mapper(s) produced it.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161966[]' id='answer-id-656693' class='answer   answerof-161966 ' value='656693'   \/><label for='answer-id-656693' id='answer-label-656693' class=' answer'><span>All data for a given value, regardless of which mapper(s) produced it.<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-13' style=';'><div id='questionWrap-13'  class='   watupro-question-id-161967'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>13. <\/span>Given a directory of files with the following structure: line number, tab character, string: <br \/>\r<br>Example: <br \/>\r<br>1abialkjfjkaoasdfjksdlkjhqweroij <br \/>\r<br>2kadfjhuwqounahagtnbvaswslmnbfgy <br \/>\r<br>3kjfteiomndscxeqalkzhtopedkfsikj <br \/>\r<br>You want to send each line as one record to your Mapper. <br \/>\r<br>Which InputFormat should you use to complete the line: conf.setInputFormat (____.class) ; ?<\/div><input type='hidden' name='question_id[]' id='qID_13' value='161967' \/><input type='hidden' id='answerType161967' value='checkbox'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161967[]' id='answer-id-656694' class='answer   answerof-161967 ' value='656694'   \/><label for='answer-id-656694' id='answer-label-656694' class=' answer'><span>SequenceFileAsTextInputFormat<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161967[]' id='answer-id-656695' class='answer   answerof-161967 ' value='656695'   \/><label for='answer-id-656695' id='answer-label-656695' class=' answer'><span>SequenceFileInputFormat<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161967[]' id='answer-id-656696' class='answer   answerof-161967 ' value='656696'   \/><label for='answer-id-656696' id='answer-label-656696' class=' answer'><span>KeyValueFileInputFormat<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161967[]' id='answer-id-656697' class='answer   answerof-161967 ' value='656697'   \/><label for='answer-id-656697' id='answer-label-656697' class=' answer'><span>BDBInputFormat<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-14' style=';'><div id='questionWrap-14'  class='   watupro-question-id-161968'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>14. <\/span>Examine the following Hive statements: <br \/>\r<br><br><img decoding=\"async\" width=399 height=85 src=\"https:\/\/www.dumpsbase.com\/freedumps\/wp-content\/uploads\/2021\/01\/image002-16.jpg\" v:shapes=\"_x0000_i1025\"><br><br \/>\r<br>Assuming the statements above execute successfully, which one of the following statements is true?<\/div><input type='hidden' name='question_id[]' id='qID_14' value='161968' \/><input type='hidden' id='answerType161968' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161968[]' id='answer-id-656698' class='answer   answerof-161968 ' value='656698'   \/><label for='answer-id-656698' id='answer-label-656698' class=' answer'><span>Each reducer generates a file sorted by age<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161968[]' id='answer-id-656699' class='answer   answerof-161968 ' value='656699'   \/><label for='answer-id-656699' id='answer-label-656699' class=' answer'><span>The SORT BY command causes only one reducer to be used<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161968[]' id='answer-id-656700' class='answer   answerof-161968 ' value='656700'   \/><label for='answer-id-656700' id='answer-label-656700' class=' answer'><span>The output of each reducer is only the age column<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161968[]' id='answer-id-656701' class='answer   answerof-161968 ' value='656701'   \/><label for='answer-id-656701' id='answer-label-656701' class=' answer'><span>The output is guaranteed to be a single file with all the data sorted by age<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-15' style=';'><div id='questionWrap-15'  class='   watupro-question-id-161969'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>15. <\/span>When can a reduce class also serve as a combiner without affecting the output of a MapReduce program?<\/div><input type='hidden' name='question_id[]' id='qID_15' value='161969' \/><input type='hidden' id='answerType161969' value='checkbox'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161969[]' id='answer-id-656702' class='answer   answerof-161969 ' value='656702'   \/><label for='answer-id-656702' id='answer-label-656702' class=' answer'><span>When the types of the reduce operation\u2019s input key and input value match the types of the reducer\u2019s output key and output value and when the reduce operation is both communicative and associative.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161969[]' id='answer-id-656703' class='answer   answerof-161969 ' value='656703'   \/><label for='answer-id-656703' id='answer-label-656703' class=' answer'><span>When the signature of the reduce method matches the signature of the combine method.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161969[]' id='answer-id-656704' class='answer   answerof-161969 ' value='656704'   \/><label for='answer-id-656704' id='answer-label-656704' class=' answer'><span>Always. Code can be reused in Java since it is a polymorphic object-oriented programming language.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161969[]' id='answer-id-656705' class='answer   answerof-161969 ' value='656705'   \/><label for='answer-id-656705' id='answer-label-656705' class=' answer'><span>Always. The point of a combiner is to serve as a mini-reducer directly after the map phase to increase performance.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161969[]' id='answer-id-656706' class='answer   answerof-161969 ' value='656706'   \/><label for='answer-id-656706' id='answer-label-656706' class=' answer'><span>Never. Combiners and reducers must be implemented separately because they serve different purposes.<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-16' style=';'><div id='questionWrap-16'  class='   watupro-question-id-161970'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>16. <\/span>What does the following WebHDFS command do? <br \/>\r<br>Curl -1 -L \u201chttp:\/\/host:port\/webhdfs\/v1\/foo\/bar?op=OPEN\u201d<\/div><input type='hidden' name='question_id[]' id='qID_16' value='161970' \/><input type='hidden' id='answerType161970' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161970[]' id='answer-id-656707' class='answer   answerof-161970 ' value='656707'   \/><label for='answer-id-656707' id='answer-label-656707' class=' answer'><span>Make a directory \/foo\/bar<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161970[]' id='answer-id-656708' class='answer   answerof-161970 ' value='656708'   \/><label for='answer-id-656708' id='answer-label-656708' class=' answer'><span>Read a file \/foo\/bar<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161970[]' id='answer-id-656709' class='answer   answerof-161970 ' value='656709'   \/><label for='answer-id-656709' id='answer-label-656709' class=' answer'><span>List a directory \/foo<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161970[]' id='answer-id-656710' class='answer   answerof-161970 ' value='656710'   \/><label for='answer-id-656710' id='answer-label-656710' class=' answer'><span>Delete a directory \/foo\/bar<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-17' style=';'><div id='questionWrap-17'  class='   watupro-question-id-161971'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>17. <\/span>You need to run the same job many times with minor variations. Rather than hardcoding all job configuration options in your drive code, you\u2019ve decided to have your Driver subclass org.apache.hadoop.conf.Configured and implement the org.apache.hadoop.util.Tool interface. <br \/>\r<br>Indentify which invocation correctly passes.mapred.job.name with a value of Example to Hadoop?<\/div><input type='hidden' name='question_id[]' id='qID_17' value='161971' \/><input type='hidden' id='answerType161971' value='checkbox'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161971[]' id='answer-id-656711' class='answer   answerof-161971 ' value='656711'   \/><label for='answer-id-656711' id='answer-label-656711' class=' answer'><span>hadoop \u201cmapred.job.name=Example\u201d MyDriver input output<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161971[]' id='answer-id-656712' class='answer   answerof-161971 ' value='656712'   \/><label for='answer-id-656712' id='answer-label-656712' class=' answer'><span>hadoop MyDriver mapred.job.name=Example input output<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161971[]' id='answer-id-656713' class='answer   answerof-161971 ' value='656713'   \/><label for='answer-id-656713' id='answer-label-656713' class=' answer'><span>hadoop MyDrive CD mapred.job.name=Example input output<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161971[]' id='answer-id-656714' class='answer   answerof-161971 ' value='656714'   \/><label for='answer-id-656714' id='answer-label-656714' class=' answer'><span>hadoop setproperty mapred.job.name=Example MyDriver input output<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161971[]' id='answer-id-656715' class='answer   answerof-161971 ' value='656715'   \/><label for='answer-id-656715' id='answer-label-656715' class=' answer'><span>hadoop setproperty (\u201cmapred.job.name=Example\u201d) MyDriver input output<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-18' style=';'><div id='questionWrap-18'  class='   watupro-question-id-161972'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>18. <\/span>Determine which best describes when the reduce method is first called in a MapReduce job?<\/div><input type='hidden' name='question_id[]' id='qID_18' value='161972' \/><input type='hidden' id='answerType161972' value='checkbox'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161972[]' id='answer-id-656716' class='answer   answerof-161972 ' value='656716'   \/><label for='answer-id-656716' id='answer-label-656716' class=' answer'><span>Reducers start copying intermediate key-value pairs from each Mapper as soon as it has completed. The programmer can configure in the job what percentage of the intermediate data should arrive before the reduce method begins.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161972[]' id='answer-id-656717' class='answer   answerof-161972 ' value='656717'   \/><label for='answer-id-656717' id='answer-label-656717' class=' answer'><span>Reducers start copying intermediate key-value pairs from each Mapper as soon as it has completed. The reduce method is called only after all intermediate data has been copied and sorted.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161972[]' id='answer-id-656718' class='answer   answerof-161972 ' value='656718'   \/><label for='answer-id-656718' id='answer-label-656718' class=' answer'><span>Reduce methods and map methods all start at the beginning of a job, in order to provide optimal performance for map-only or reduce-only jobs.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161972[]' id='answer-id-656719' class='answer   answerof-161972 ' value='656719'   \/><label for='answer-id-656719' id='answer-label-656719' class=' answer'><span>Reducers start copying intermediate key-value pairs from each Mapper as soon as it has completed. The reduce method is called as soon as the intermediate key-value pairs start to arrive.<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-19' style=';'><div id='questionWrap-19'  class='   watupro-question-id-161973'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>19. <\/span>You have a directory named jobdata in HDFS that contains four files: _first.txt, second.txt, .third.txt and #data.txt. <br \/>\r<br>How many files will be processed by the FileInputFormat.setInputPaths () command when it's given a path object representing this directory?<\/div><input type='hidden' name='question_id[]' id='qID_19' value='161973' \/><input type='hidden' id='answerType161973' value='checkbox'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161973[]' id='answer-id-656720' class='answer   answerof-161973 ' value='656720'   \/><label for='answer-id-656720' id='answer-label-656720' class=' answer'><span>Four, all files will be processed<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161973[]' id='answer-id-656721' class='answer   answerof-161973 ' value='656721'   \/><label for='answer-id-656721' id='answer-label-656721' class=' answer'><span>Three, the pound sign is an invalid character for HDFS file names<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161973[]' id='answer-id-656722' class='answer   answerof-161973 ' value='656722'   \/><label for='answer-id-656722' id='answer-label-656722' class=' answer'><span>Two, file names with a leading period or underscore are ignored<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161973[]' id='answer-id-656723' class='answer   answerof-161973 ' value='656723'   \/><label for='answer-id-656723' id='answer-label-656723' class=' answer'><span>None, the directory cannot be named jobdata<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161973[]' id='answer-id-656724' class='answer   answerof-161973 ' value='656724'   \/><label for='answer-id-656724' id='answer-label-656724' class=' answer'><span>One, no special characters can prefix the name of an input file<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-20' style=';'><div id='questionWrap-20'  class='   watupro-question-id-161974'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>20. <\/span>In a large MapReduce job with m mappers and n reducers, how many distinct copy operations will there be in the sort\/shuffle phase?<\/div><input type='hidden' name='question_id[]' id='qID_20' value='161974' \/><input type='hidden' id='answerType161974' value='checkbox'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161974[]' id='answer-id-656725' class='answer   answerof-161974 ' value='656725'   \/><label for='answer-id-656725' id='answer-label-656725' class=' answer'><span>mXn (i.e., m multiplied by n)<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161974[]' id='answer-id-656726' class='answer   answerof-161974 ' value='656726'   \/><label for='answer-id-656726' id='answer-label-656726' class=' answer'><span>n<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161974[]' id='answer-id-656727' class='answer   answerof-161974 ' value='656727'   \/><label for='answer-id-656727' id='answer-label-656727' class=' answer'><span>m<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161974[]' id='answer-id-656728' class='answer   answerof-161974 ' value='656728'   \/><label for='answer-id-656728' id='answer-label-656728' class=' answer'><span>m+n (i.e., m plus n)<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161974[]' id='answer-id-656729' class='answer   answerof-161974 ' value='656729'   \/><label for='answer-id-656729' id='answer-label-656729' class=' answer'><span>mn (i.e., m to the power of n)<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-21' style=';'><div id='questionWrap-21'  class='   watupro-question-id-161975'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>21. <\/span>Which Hadoop component is responsible for managing the distributed file system metadata?<\/div><input type='hidden' name='question_id[]' id='qID_21' value='161975' \/><input type='hidden' id='answerType161975' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161975[]' id='answer-id-656730' class='answer   answerof-161975 ' value='656730'   \/><label for='answer-id-656730' id='answer-label-656730' class=' answer'><span>NameNode<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161975[]' id='answer-id-656731' class='answer   answerof-161975 ' value='656731'   \/><label for='answer-id-656731' id='answer-label-656731' class=' answer'><span>Metanode<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161975[]' id='answer-id-656732' class='answer   answerof-161975 ' value='656732'   \/><label for='answer-id-656732' id='answer-label-656732' class=' answer'><span>DataNode<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161975[]' id='answer-id-656733' class='answer   answerof-161975 ' value='656733'   \/><label for='answer-id-656733' id='answer-label-656733' class=' answer'><span>NameSpaceManager<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-22' style=';'><div id='questionWrap-22'  class='   watupro-question-id-161976'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>22. <\/span>Review the following data and Pig code. <br \/>\r<br>M,38,95111 <br \/>\r<br>F,29,95060 <br \/>\r<br>F,45,95192 <br \/>\r<br>M,62,95102 <br \/>\r<br>F,56,95102 <br \/>\r<br>A = LOAD &amp;apos;data&amp;apos; USING PigStorage(&amp;apos;.&amp;apos;) as (gender:Chararray, age:int, zlp:chararray); <br \/>\r<br>B = FOREACH A GENERATE age; <br \/>\r<br>Which one of the following commands would save the results of B to a folder in hdfs named myoutput?<\/div><input type='hidden' name='question_id[]' id='qID_22' value='161976' \/><input type='hidden' id='answerType161976' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161976[]' id='answer-id-656734' class='answer   answerof-161976 ' value='656734'   \/><label for='answer-id-656734' id='answer-label-656734' class=' answer'><span>STORE A INTO &amp;apos;myoutput&amp;apos; USING PigStorage(&amp;apos;,&amp;apos;);<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161976[]' id='answer-id-656735' class='answer   answerof-161976 ' value='656735'   \/><label for='answer-id-656735' id='answer-label-656735' class=' answer'><span>DUMP B using PigStorage(&amp;apos;myoutput&amp;apos;);<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161976[]' id='answer-id-656736' class='answer   answerof-161976 ' value='656736'   \/><label for='answer-id-656736' id='answer-label-656736' class=' answer'><span>STORE B INTO &amp;apos;myoutput&amp;apos;;<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161976[]' id='answer-id-656737' class='answer   answerof-161976 ' value='656737'   \/><label for='answer-id-656737' id='answer-label-656737' class=' answer'><span>DUMP B INTO &amp;apos;myoutput&amp;apos;;<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-23' style=';'><div id='questionWrap-23'  class='   watupro-question-id-161977'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>23. <\/span>MapReduce v2 (MRv2\/YARN) splits which major functions of the JobTracker into separate daemons? Select two.<\/div><input type='hidden' name='question_id[]' id='qID_23' value='161977' \/><input type='hidden' id='answerType161977' value='checkbox'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161977[]' id='answer-id-656738' class='answer   answerof-161977 ' value='656738'   \/><label for='answer-id-656738' id='answer-label-656738' class=' answer'><span>Heath states checks (heartbeats)<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161977[]' id='answer-id-656739' class='answer   answerof-161977 ' value='656739'   \/><label for='answer-id-656739' id='answer-label-656739' class=' answer'><span>Resource management<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161977[]' id='answer-id-656740' class='answer   answerof-161977 ' value='656740'   \/><label for='answer-id-656740' id='answer-label-656740' class=' answer'><span>Job scheduling\/monitoring<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161977[]' id='answer-id-656741' class='answer   answerof-161977 ' value='656741'   \/><label for='answer-id-656741' id='answer-label-656741' class=' answer'><span>Job coordination between the ResourceManager and NodeManager<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161977[]' id='answer-id-656742' class='answer   answerof-161977 ' value='656742'   \/><label for='answer-id-656742' id='answer-label-656742' class=' answer'><span>Launching tasks<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161977[]' id='answer-id-656743' class='answer   answerof-161977 ' value='656743'   \/><label for='answer-id-656743' id='answer-label-656743' class=' answer'><span>Managing file system metadata<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161977[]' id='answer-id-656744' class='answer   answerof-161977 ' value='656744'   \/><label for='answer-id-656744' id='answer-label-656744' class=' answer'><span>MapReduce metric reporting<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161977[]' id='answer-id-656745' class='answer   answerof-161977 ' value='656745'   \/><label for='answer-id-656745' id='answer-label-656745' class=' answer'><span>Managing tasks<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-24' style=';'><div id='questionWrap-24'  class='   watupro-question-id-161978'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>24. <\/span>Assuming the following Hive query executes successfully: <br \/>\r<br><br><img decoding=\"async\" width=353 height=33 src=\"https:\/\/www.dumpsbase.com\/freedumps\/wp-content\/uploads\/2021\/01\/image004-9.jpg\" v:shapes=\"_x0000_i1026\"><br><br \/>\r<br>Which one of the following statements describes the result set?<\/div><input type='hidden' name='question_id[]' id='qID_24' value='161978' \/><input type='hidden' id='answerType161978' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161978[]' id='answer-id-656746' class='answer   answerof-161978 ' value='656746'   \/><label for='answer-id-656746' id='answer-label-656746' class=' answer'><span>A bigram of the top 80 sentences that contain the substring &quot;you are&quot; in the lines column of the input data A1 table.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161978[]' id='answer-id-656747' class='answer   answerof-161978 ' value='656747'   \/><label for='answer-id-656747' id='answer-label-656747' class=' answer'><span>An 80-value ngram of sentences that contain the words &quot;you&quot; or &quot;are&quot; in the lines column of the inputdata table.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161978[]' id='answer-id-656748' class='answer   answerof-161978 ' value='656748'   \/><label for='answer-id-656748' id='answer-label-656748' class=' answer'><span>A trigram of the top 80 sentences that contain &quot;you are&quot; followed by a null space in the lines column of the inputdata table.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161978[]' id='answer-id-656749' class='answer   answerof-161978 ' value='656749'   \/><label for='answer-id-656749' id='answer-label-656749' class=' answer'><span>A frequency distribution of the top 80 words that follow the subsequence &quot;you are&quot; in the lines column of the inputdata table.<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-25' style=';'><div id='questionWrap-25'  class='   watupro-question-id-161979'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>25. <\/span>Given the following Pig commands: <br \/>\r<br><br><img decoding=\"async\" width=472 height=64 src=\"https:\/\/www.dumpsbase.com\/freedumps\/wp-content\/uploads\/2021\/01\/image006-5.jpg\" v:shapes=\"_x0000_i1027\"><br><br \/>\r<br>Which one of the following statements is true?<\/div><input type='hidden' name='question_id[]' id='qID_25' value='161979' \/><input type='hidden' id='answerType161979' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161979[]' id='answer-id-656750' class='answer   answerof-161979 ' value='656750'   \/><label for='answer-id-656750' id='answer-label-656750' class=' answer'><span>The $1 variable represents the first column of data in 'my.log'<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161979[]' id='answer-id-656751' class='answer   answerof-161979 ' value='656751'   \/><label for='answer-id-656751' id='answer-label-656751' class=' answer'><span>The $1 variable represents the second column of data in 'my.log'<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161979[]' id='answer-id-656752' class='answer   answerof-161979 ' value='656752'   \/><label for='answer-id-656752' id='answer-label-656752' class=' answer'><span>The severe relation is not valid<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161979[]' id='answer-id-656753' class='answer   answerof-161979 ' value='656753'   \/><label for='answer-id-656753' id='answer-label-656753' class=' answer'><span>The grouped relation is not valid<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-26' style=';'><div id='questionWrap-26'  class='   watupro-question-id-161980'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>26. <\/span>What does Pig provide to the overall Hadoop solution?<\/div><input type='hidden' name='question_id[]' id='qID_26' value='161980' \/><input type='hidden' id='answerType161980' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161980[]' id='answer-id-656754' class='answer   answerof-161980 ' value='656754'   \/><label for='answer-id-656754' id='answer-label-656754' class=' answer'><span>Legacy language Integration with MapReduce framework<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161980[]' id='answer-id-656755' class='answer   answerof-161980 ' value='656755'   \/><label for='answer-id-656755' id='answer-label-656755' class=' answer'><span>Simple scripting language for writing MapReduce programs<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161980[]' id='answer-id-656756' class='answer   answerof-161980 ' value='656756'   \/><label for='answer-id-656756' id='answer-label-656756' class=' answer'><span>Database table and storage management services<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161980[]' id='answer-id-656757' class='answer   answerof-161980 ' value='656757'   \/><label for='answer-id-656757' id='answer-label-656757' class=' answer'><span>C++ interface to MapReduce and data warehouse infrastructure<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-27' style=';'><div id='questionWrap-27'  class='   watupro-question-id-161981'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>27. <\/span>What types of algorithms are difficult to express in MapReduce v1 (MRv1)?<\/div><input type='hidden' name='question_id[]' id='qID_27' value='161981' \/><input type='hidden' id='answerType161981' value='checkbox'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161981[]' id='answer-id-656758' class='answer   answerof-161981 ' value='656758'   \/><label for='answer-id-656758' id='answer-label-656758' class=' answer'><span>Algorithms that require applying the same mathematical function to large numbers of individual binary records.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161981[]' id='answer-id-656759' class='answer   answerof-161981 ' value='656759'   \/><label for='answer-id-656759' id='answer-label-656759' class=' answer'><span>Relational operations on large amounts of structured and semi-structured data.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161981[]' id='answer-id-656760' class='answer   answerof-161981 ' value='656760'   \/><label for='answer-id-656760' id='answer-label-656760' class=' answer'><span>Algorithms that require global, sharing states.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161981[]' id='answer-id-656761' class='answer   answerof-161981 ' value='656761'   \/><label for='answer-id-656761' id='answer-label-656761' class=' answer'><span>Large-scale graph algorithms that require one-step link traversal.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161981[]' id='answer-id-656762' class='answer   answerof-161981 ' value='656762'   \/><label for='answer-id-656762' id='answer-label-656762' class=' answer'><span>Text analysis algorithms on large collections of unstructured text (e.g, Web crawls).<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-28' style=';'><div id='questionWrap-28'  class='   watupro-question-id-161982'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>28. <\/span>You need to create a job that does frequency analysis on input data. You will do this by writing a Mapper that uses TextInputFormat and splits each value (a line of text from an input file) into individual characters. For each one of these characters, you will emit the character as a key and an InputWritable as the value. <br \/>\r<br>As this will produce proportionally more intermediate data than input data, which two resources should you expect to be bottlenecks?<\/div><input type='hidden' name='question_id[]' id='qID_28' value='161982' \/><input type='hidden' id='answerType161982' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161982[]' id='answer-id-656763' class='answer   answerof-161982 ' value='656763'   \/><label for='answer-id-656763' id='answer-label-656763' class=' answer'><span>Processor and network I\/O<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161982[]' id='answer-id-656764' class='answer   answerof-161982 ' value='656764'   \/><label for='answer-id-656764' id='answer-label-656764' class=' answer'><span>Disk I\/O and network I\/O<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161982[]' id='answer-id-656765' class='answer   answerof-161982 ' value='656765'   \/><label for='answer-id-656765' id='answer-label-656765' class=' answer'><span>Processor and RAM<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161982[]' id='answer-id-656766' class='answer   answerof-161982 ' value='656766'   \/><label for='answer-id-656766' id='answer-label-656766' class=' answer'><span>Processor and disk I\/O<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-29' style=';'><div id='questionWrap-29'  class='   watupro-question-id-161983'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>29. <\/span>Which one of the following statements regarding the components of YARN is FALSE?<\/div><input type='hidden' name='question_id[]' id='qID_29' value='161983' \/><input type='hidden' id='answerType161983' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161983[]' id='answer-id-656767' class='answer   answerof-161983 ' value='656767'   \/><label for='answer-id-656767' id='answer-label-656767' class=' answer'><span>A Container executes a specific task as assigned by the ApplicationMaster<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161983[]' id='answer-id-656768' class='answer   answerof-161983 ' value='656768'   \/><label for='answer-id-656768' id='answer-label-656768' class=' answer'><span>The ResourceManager is responsible for scheduling and allocating resources<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161983[]' id='answer-id-656769' class='answer   answerof-161983 ' value='656769'   \/><label for='answer-id-656769' id='answer-label-656769' class=' answer'><span>A client application submits a YARW job to the ResourceManager<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161983[]' id='answer-id-656770' class='answer   answerof-161983 ' value='656770'   \/><label for='answer-id-656770' id='answer-label-656770' class=' answer'><span>The ResourceManager monitors and restarts any failed Containers<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-30' style=';'><div id='questionWrap-30'  class='   watupro-question-id-161984'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>30. <\/span>You are developing a combiner that takes as input Text keys, IntWritable values, and emits Text keys, IntWritable values. <br \/>\r<br>Which interface should your class implement?<\/div><input type='hidden' name='question_id[]' id='qID_30' value='161984' \/><input type='hidden' id='answerType161984' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161984[]' id='answer-id-656771' class='answer   answerof-161984 ' value='656771'   \/><label for='answer-id-656771' id='answer-label-656771' class=' answer'><span>Combiner &lt;Text, IntWritable, Text, IntWritable&gt;<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161984[]' id='answer-id-656772' class='answer   answerof-161984 ' value='656772'   \/><label for='answer-id-656772' id='answer-label-656772' class=' answer'><span>Mapper &lt;Text, IntWritable, Text, IntWritable&gt;<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161984[]' id='answer-id-656773' class='answer   answerof-161984 ' value='656773'   \/><label for='answer-id-656773' id='answer-label-656773' class=' answer'><span>Reducer &lt;Text, Text, IntWritable, IntWritable&gt;<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161984[]' id='answer-id-656774' class='answer   answerof-161984 ' value='656774'   \/><label for='answer-id-656774' id='answer-label-656774' class=' answer'><span>Reducer &lt;Text, IntWritable, Text, IntWritable&gt;<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161984[]' id='answer-id-656775' class='answer   answerof-161984 ' value='656775'   \/><label for='answer-id-656775' id='answer-label-656775' class=' answer'><span>Combiner &lt;Text, Text, IntWritable, IntWritable&gt;<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-31' style=';'><div id='questionWrap-31'  class='   watupro-question-id-161985'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>31. <\/span>Which one of the following Hive commands uses an HCatalog table named x?<\/div><input type='hidden' name='question_id[]' id='qID_31' value='161985' \/><input type='hidden' id='answerType161985' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161985[]' id='answer-id-656776' class='answer   answerof-161985 ' value='656776'   \/><label for='answer-id-656776' id='answer-label-656776' class=' answer'><span>SELECT * FROM x;<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161985[]' id='answer-id-656777' class='answer   answerof-161985 ' value='656777'   \/><label for='answer-id-656777' id='answer-label-656777' class=' answer'><span>SELECT x.-FROM org.apache.hcatalog.hive.HCatLoader('x');<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161985[]' id='answer-id-656778' class='answer   answerof-161985 ' value='656778'   \/><label for='answer-id-656778' id='answer-label-656778' class=' answer'><span>SELECT * FROM org.apache.hcatalog.hive.HCatLoader('x');<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161985[]' id='answer-id-656779' class='answer   answerof-161985 ' value='656779'   \/><label for='answer-id-656779' id='answer-label-656779' class=' answer'><span>Hive commands cannot reference an HCatalog table<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-32' style=';'><div id='questionWrap-32'  class='   watupro-question-id-161986'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>32. <\/span>Given the following Pig command: <br \/>\r<br>logevents = LOAD &amp;apos;input\/my.log&amp;apos; AS (date:chararray, levehstring, code:int, message:string); <br \/>\r<br>Which one of the following statements is true?<\/div><input type='hidden' name='question_id[]' id='qID_32' value='161986' \/><input type='hidden' id='answerType161986' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161986[]' id='answer-id-656780' class='answer   answerof-161986 ' value='656780'   \/><label for='answer-id-656780' id='answer-label-656780' class=' answer'><span>The logevents relation represents the data from the my.log file, using a comma as the parsing delimiter<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161986[]' id='answer-id-656781' class='answer   answerof-161986 ' value='656781'   \/><label for='answer-id-656781' id='answer-label-656781' class=' answer'><span>The logevents relation represents the data from the my.log file, using a tab as the parsing delimiter<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161986[]' id='answer-id-656782' class='answer   answerof-161986 ' value='656782'   \/><label for='answer-id-656782' id='answer-label-656782' class=' answer'><span>The first field of logevents must be a properly-formatted date string or table return an error<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161986[]' id='answer-id-656783' class='answer   answerof-161986 ' value='656783'   \/><label for='answer-id-656783' id='answer-label-656783' class=' answer'><span>The statement is not a valid Pig command<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-33' style=';'><div id='questionWrap-33'  class='   watupro-question-id-161987'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>33. <\/span>Consider the following two relations, A and B. <br \/>\r<br><br><img decoding=\"async\" width=275 height=193 src=\"https:\/\/www.dumpsbase.com\/freedumps\/wp-content\/uploads\/2021\/01\/image008-4.jpg\" v:shapes=\"_x0000_i1028\"><br><\/div><input type='hidden' name='question_id[]' id='qID_33' value='161987' \/><input type='hidden' id='answerType161987' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161987[]' id='answer-id-656784' class='answer   answerof-161987 ' value='656784'   \/><label for='answer-id-656784' id='answer-label-656784' class=' answer'><span>C = DOIN B BY a1, A by b2;<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161987[]' id='answer-id-656785' class='answer   answerof-161987 ' value='656785'   \/><label for='answer-id-656785' id='answer-label-656785' class=' answer'><span>C = JOIN A by al, B by b2;<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161987[]' id='answer-id-656786' class='answer   answerof-161987 ' value='656786'   \/><label for='answer-id-656786' id='answer-label-656786' class=' answer'><span>C = JOIN A a1, B b2;<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161987[]' id='answer-id-656787' class='answer   answerof-161987 ' value='656787'   \/><label for='answer-id-656787' id='answer-label-656787' class=' answer'><span>C = JOIN A SO, B $1;<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-34' style=';'><div id='questionWrap-34'  class='   watupro-question-id-161988'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>34. <\/span>Given the following Hive commands: <br \/>\r<br><br><img decoding=\"async\" width=393 height=57 src=\"https:\/\/www.dumpsbase.com\/freedumps\/wp-content\/uploads\/2021\/01\/image010-2.jpg\" v:shapes=\"_x0000_i1029\"><br><br \/>\r<br>Which one of the following statements Is true?<\/div><input type='hidden' name='question_id[]' id='qID_34' value='161988' \/><input type='hidden' id='answerType161988' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161988[]' id='answer-id-656788' class='answer   answerof-161988 ' value='656788'   \/><label for='answer-id-656788' id='answer-label-656788' class=' answer'><span>The file mydata.txt is copied to a subfolder of \/apps\/hive\/warehouse<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161988[]' id='answer-id-656789' class='answer   answerof-161988 ' value='656789'   \/><label for='answer-id-656789' id='answer-label-656789' class=' answer'><span>The file mydata.txt is moved to a subfolder of \/apps\/hive\/warehouse<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161988[]' id='answer-id-656790' class='answer   answerof-161988 ' value='656790'   \/><label for='answer-id-656790' id='answer-label-656790' class=' answer'><span>The file mydata.txt is copied into Hive's underlying relational database 0.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161988[]' id='answer-id-656791' class='answer   answerof-161988 ' value='656791'   \/><label for='answer-id-656791' id='answer-label-656791' class=' answer'><span>The file mydata.txt does not move from Its current location in HDFS<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-35' style=';'><div id='questionWrap-35'  class='   watupro-question-id-161989'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>35. <\/span>In a MapReduce job, the reducer receives all values associated with same key. <br \/>\r<br>Which statement best describes the ordering of these values?<\/div><input type='hidden' name='question_id[]' id='qID_35' value='161989' \/><input type='hidden' id='answerType161989' value='checkbox'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161989[]' id='answer-id-656792' class='answer   answerof-161989 ' value='656792'   \/><label for='answer-id-656792' id='answer-label-656792' class=' answer'><span>The values are in sorted order.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161989[]' id='answer-id-656793' class='answer   answerof-161989 ' value='656793'   \/><label for='answer-id-656793' id='answer-label-656793' class=' answer'><span>The values are arbitrarily ordered, and the ordering may vary from run to run of the same MapReduce job.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161989[]' id='answer-id-656794' class='answer   answerof-161989 ' value='656794'   \/><label for='answer-id-656794' id='answer-label-656794' class=' answer'><span>The values are arbitrary ordered, but multiple runs of the same MapReduce job will always have the same ordering.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161989[]' id='answer-id-656795' class='answer   answerof-161989 ' value='656795'   \/><label for='answer-id-656795' id='answer-label-656795' class=' answer'><span>Since the values come from mapper outputs, the reducers will receive contiguous sections of sorted values.<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-36' style=';'><div id='questionWrap-36'  class='   watupro-question-id-161990'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>36. <\/span>Which describes how a client reads a file from HDFS?<\/div><input type='hidden' name='question_id[]' id='qID_36' value='161990' \/><input type='hidden' id='answerType161990' value='checkbox'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161990[]' id='answer-id-656796' class='answer   answerof-161990 ' value='656796'   \/><label for='answer-id-656796' id='answer-label-656796' class=' answer'><span>The client queries the NameNode for the block location(s). The NameNode returns the block location(s) to the client. The client reads the data directory off the DataNode(s).<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161990[]' id='answer-id-656797' class='answer   answerof-161990 ' value='656797'   \/><label for='answer-id-656797' id='answer-label-656797' class=' answer'><span>The client queries all DataNodes in parallel. The DataNode that contains the requested data responds directly to the client. The client reads the data directly off the DataNode.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161990[]' id='answer-id-656798' class='answer   answerof-161990 ' value='656798'   \/><label for='answer-id-656798' id='answer-label-656798' class=' answer'><span>The client contacts the NameNode for the block location(s). The NameNode then queries the DataNodes for block locations. The DataNodes respond to the NameNode, and the NameNode redirects the client to the DataNode that holds the requested data block(s). The client then reads the data directly off the DataNode.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161990[]' id='answer-id-656799' class='answer   answerof-161990 ' value='656799'   \/><label for='answer-id-656799' id='answer-label-656799' class=' answer'><span>The client contacts the NameNode for the block location(s). The NameNode contacts the DataNode that holds the requested data block. Data is transferred from the DataNode to the NameNode, and then from the NameNode to the client.<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-37' style=';'><div id='questionWrap-37'  class='   watupro-question-id-161991'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>37. <\/span>For each input key-value pair, mappers can emit:<\/div><input type='hidden' name='question_id[]' id='qID_37' value='161991' \/><input type='hidden' id='answerType161991' value='checkbox'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161991[]' id='answer-id-656800' class='answer   answerof-161991 ' value='656800'   \/><label for='answer-id-656800' id='answer-label-656800' class=' answer'><span>As many intermediate key-value pairs as designed. There are no restrictions on the types of those key-value pairs (i.e., they can be heterogeneous).<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161991[]' id='answer-id-656801' class='answer   answerof-161991 ' value='656801'   \/><label for='answer-id-656801' id='answer-label-656801' class=' answer'><span>As many intermediate key-value pairs as designed, but they cannot be of the same type as the input key-value pair.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161991[]' id='answer-id-656802' class='answer   answerof-161991 ' value='656802'   \/><label for='answer-id-656802' id='answer-label-656802' class=' answer'><span>One intermediate key-value pair, of a different type.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161991[]' id='answer-id-656803' class='answer   answerof-161991 ' value='656803'   \/><label for='answer-id-656803' id='answer-label-656803' class=' answer'><span>One intermediate key-value pair, but of the same type.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161991[]' id='answer-id-656804' class='answer   answerof-161991 ' value='656804'   \/><label for='answer-id-656804' id='answer-label-656804' class=' answer'><span>As many intermediate key-value pairs as designed, as long as all the keys have the same types and all the values have the same type.<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-38' style=';'><div id='questionWrap-38'  class='   watupro-question-id-161992'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>38. <\/span>You write MapReduce job to process 100 files in HDFS. Your MapReduce algorithm uses TextInputFormat: the mapper applies a regular expression over input values and emits key-values pairs with the key consisting of the matching text, and the value containing the filename and byte offset. Determine the difference between setting the number of reduces to one and settings the number of reducers to zero.<\/div><input type='hidden' name='question_id[]' id='qID_38' value='161992' \/><input type='hidden' id='answerType161992' value='checkbox'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161992[]' id='answer-id-656805' class='answer   answerof-161992 ' value='656805'   \/><label for='answer-id-656805' id='answer-label-656805' class=' answer'><span>There is no difference in output between the two settings.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161992[]' id='answer-id-656806' class='answer   answerof-161992 ' value='656806'   \/><label for='answer-id-656806' id='answer-label-656806' class=' answer'><span>With zero reducers, no reducer runs and the job throws an exception. With one reducer, instances of matching patterns are stored in a single file on HDF<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161992[]' id='answer-id-656807' class='answer   answerof-161992 ' value='656807'   \/><label for='answer-id-656807' id='answer-label-656807' class=' answer'><span>With zero reducers, all instances of matching patterns are gathered together in one file on HDF<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161992[]' id='answer-id-656808' class='answer   answerof-161992 ' value='656808'   \/><label for='answer-id-656808' id='answer-label-656808' class=' answer'><span>With one reducer, instances of matching patterns are stored in multiple files on HDF<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161992[]' id='answer-id-656809' class='answer   answerof-161992 ' value='656809'   \/><label for='answer-id-656809' id='answer-label-656809' class=' answer'><span>With zero reducers, instances of matching patterns are stored in multiple files on HDF<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161992[]' id='answer-id-656810' class='answer   answerof-161992 ' value='656810'   \/><label for='answer-id-656810' id='answer-label-656810' class=' answer'><span>With one reducer, all instances of matching patterns are gathered together in one file on HDF<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-39' style=';'><div id='questionWrap-39'  class='   watupro-question-id-161993'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>39. <\/span>In Hadoop 2.0, which one of the following statements is true about a standby NameNode? <br \/>\r<br>The Standby NameNode:<\/div><input type='hidden' name='question_id[]' id='qID_39' value='161993' \/><input type='hidden' id='answerType161993' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161993[]' id='answer-id-656811' class='answer   answerof-161993 ' value='656811'   \/><label for='answer-id-656811' id='answer-label-656811' class=' answer'><span>Communicates directly with the active NameNode to maintain the state of the active NameNode.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161993[]' id='answer-id-656812' class='answer   answerof-161993 ' value='656812'   \/><label for='answer-id-656812' id='answer-label-656812' class=' answer'><span>Receives the same block reports as the active NameNode.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161993[]' id='answer-id-656813' class='answer   answerof-161993 ' value='656813'   \/><label for='answer-id-656813' id='answer-label-656813' class=' answer'><span>Runs on the same machine and shares the memory of the active NameNode.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-161993[]' id='answer-id-656814' class='answer   answerof-161993 ' value='656814'   \/><label for='answer-id-656814' id='answer-label-656814' class=' answer'><span>Processes all client requests and block reports from the appropriate DataNodes.<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-40' style=';'><div id='questionWrap-40'  class='   watupro-question-id-161994'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>40. <\/span>In the reducer, the MapReduce API provides you with an iterator over Writable values. <br \/>\r<br>What does calling the next () method return?<\/div><input type='hidden' name='question_id[]' id='qID_40' value='161994' \/><input type='hidden' id='answerType161994' value='checkbox'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161994[]' id='answer-id-656815' class='answer   answerof-161994 ' value='656815'   \/><label for='answer-id-656815' id='answer-label-656815' class=' answer'><span>It returns a reference to a different Writable object time.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161994[]' id='answer-id-656816' class='answer   answerof-161994 ' value='656816'   \/><label for='answer-id-656816' id='answer-label-656816' class=' answer'><span>It returns a reference to a Writable object from an object pool.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161994[]' id='answer-id-656817' class='answer   answerof-161994 ' value='656817'   \/><label for='answer-id-656817' id='answer-label-656817' class=' answer'><span>It returns a reference to the same Writable object each time, but populated with different data.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161994[]' id='answer-id-656818' class='answer   answerof-161994 ' value='656818'   \/><label for='answer-id-656818' id='answer-label-656818' class=' answer'><span>It returns a reference to a Writable object. The API leaves unspecified whether this is a reused object or a new object.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-161994[]' id='answer-id-656819' class='answer   answerof-161994 ' value='656819'   \/><label for='answer-id-656819' id='answer-label-656819' class=' answer'><span>It returns a reference to the same Writable object if the next value is the same as the previous value, or a new Writable object otherwise.<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div style='display:none' id='question-41'>\n\t<div class='question-content'>\n\t\t<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.dumpsbase.com\/freedumps\/wp-content\/plugins\/watupro\/img\/loading.gif\" width=\"16\" height=\"16\" alt=\"Loading...\" title=\"Loading...\" \/>&nbsp;Loading...\t<\/div>\n<\/div>\n\n<br \/>\n\t\n\t\t\t<div class=\"watupro_buttons flex \" id=\"watuPROButtons5036\" >\n\t\t  <div id=\"prev-question\" style=\"display:none;\"><input type=\"button\" value=\"&lt; 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