Practice Mapreduce Interview Multiple Choice Questions with Answers Quiz-1

Q.1.

____________ specifies the number of segments on disk to be merged at the same time.

Explanation

Q.2.

Point out the correct statement.

a) The number of sorted map outputs fetched into memory before being merged to disk
b) The memory threshold for fetched map outputs before an in-memory merge is finished
c) The percentage of memory relative to the maximum heap size in which map outputs may not be retained during the reduce
d) None of the mentioned

Explanation

Q.3.

Map output larger than ___________ percent of the memory allocated to copying map outputs.

Explanation

Q.4.

Jobs can enable task JVMs to be reused by specifying the job configuration _________

Explanation

Q.5.

Point out the wrong statement.

a) The task tracker has local directory to create localized cache and localized job
b) The task tracker can define multiple local directories
c) The Job tracker cannot define multiple local directories
d) None of the mentioned

Explanation

Q.6.

During the execution of a streaming job, the names of the _______ parameters are transformed.

Explanation

Q.7.

The standard output (stdout) and error (stderr) streams of the task are read by the TaskTracker and logged to _________

Explanation

Q.8.

____________ is the primary interface by which user-job interacts with the JobTracker.

Explanation

Q.9.

The _____________ can also be used to distribute both jars and native libraries for use in the map and/or reduce tasks.

Explanation

Q.10.

__________ is used to filter log files from the output directory listing.

Explanation