- All Exams Instant Download
Which mode of operation in Hadoop allows you to most closely simulate a production cluster while using a single machine?
You want to run Hadoop jobs on your development workstation for testing before you submit them to your production cluster. Which mode of operation in Hadoop allows you to most closely simulate a production cluster while using a single machine?A . Run all the nodes in your production cluster as...
What types of algorithms are difficult to express in MapReduce v1 (MRv1)?
What types of algorithms are difficult to express in MapReduce v1 (MRv1)?A . Algorithms that require applying the same mathematical function to large numbers of individual binary records.B . Relational operations on large amounts of structured and semi-structured data.C . Algorithms that require global, sharing states.D . Large-scale graph algorithms...
Which one of the following statements is true?
Given the following Pig commands: Which one of the following statements is true?A . The $1 variable represents the first column of data in 'my.log'B . The $1 variable represents the second column of data in 'my.log'C . The severe relation is not validD . The grouped relation is not...
Assuming the statements above execute successfully, which one of the following statements is true?
Examine the following Hive statements: Assuming the statements above execute successfully, which one of the following statements is true?A . Each reducer generates a file sorted by ageB . The SORT BY command causes only one reducer to be usedC . The output of each reducer is only the age...
Will you be able to reuse your existing Reduces as your combiner in this case and why or why not?
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, and then have your reducer increment a counter for each literal 1 it receives. After...
In Hadoop 2.0, which one of the following statements is true about a standby NameNode?
In Hadoop 2.0, which one of the following statements is true about a standby NameNode? The Standby NameNode:A . Communicates directly with the active NameNode to maintain the state of the active NameNode.B . Receives the same block reports as the active NameNode.C . Runs on the same machine and...
Which is the best way to make this library available to your MapReducer job at runtime?
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. Which is the best way to make this library available to your MapReducer job at runtime?A ....
MapReduce v2 (MRv2/YARN) splits which major functions of the JobTracker into separate daemons? Select two.
MapReduce v2 (MRv2/YARN) splits which major functions of the JobTracker into separate daemons? Select two.A . Heath states checks (heartbeats)B . Resource managementC . Job scheduling/monitoringD . Job coordination between the ResourceManager and NodeManagerE . Launching tasksF . Managing file system metadataG . MapReduce metric reportingH . Managing tasksView AnswerAnswer:...
Which is the best way to make this library available to your MapReducer job at runtime?
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. Which is the best way to make this library available to your MapReducer job at runtime?A ....
In a large MapReduce job with m mappers and n reducers, how many distinct copy operations will there be in the sort/shuffle phase?
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 . m+n (i.e., m plus n)E . mn (i.e., m to the power of n)View AnswerAnswer:...
