You want to count the number of occurrences for each unique word in the supplied input data. You’ve decided to implement this by having your mapper tokenize each word and emit a literal value 1,...
Review the following 'data' file and Pig code. Which one of the following statements is true?A . The Output Of the DUMP D command IS (M,{(M,62.95102),(M,38,95111)})B . The output of the dump d command is...
Which best describes how TextInputFormat processes input files and line breaks?A . Input file splits may cross line breaks. A line that crosses file splits is read by the RecordReader of the split that contains...
In Hadoop 2.0, which TWO of the following processes work together to provide automatic failover of the NameNode? Choose 2 answersA . ZKFailoverControllerB . ZooKeeperC . QuorumManagerD . JournalNodeView AnswerAnswer: A,D
In a large MapReduce job with m mappers and n reducers, how many distinct copy operations will there be in the sort/shuffle phase?A . mXn (i.e., m multiplied by n)B . nC . mD ....
How are keys and values presented and passed to the reducers during a standard sort and shuffle phase of MapReduce?A . Keys are presented to reducer in sorted order; values for a given key are...
Indentify the utility that allows you to create and run MapReduce jobs with any executable or script as the mapper and/or the reducer?A . OozieB . SqoopC . FlumeD . Hadoop StreamingE . mapredView AnswerAnswer:...
You need to run the same job many times with minor variations. Rather than hardcoding all job configuration options in your drive code, you’ve decided to have your Driver subclass org.apache.hadoop.conf.Configured and implement the org.apache.hadoop.util.Tool...
You use the hadoop fs Cput command to write a 300 MB file using and HDFS block size of 64 MB. Just after this command has finished writing 200 MB of this file, what would...
Which one of the following statements describes the relationship between the ResourceManager and the ApplicationMaster?A . The ApplicationMaster requests resources from the ResourceManagerB . The ApplicationMaster starts a single instance of the ResourceManagerC . The...