Q. The output of the reduce task is typically written to the FileSystem via _____________

View solution

Q. Which of the following is the default Partitioner for Mapreduce?

View solution

Q. Which of the following partitions the key space?

View solution

Q. ____________ is a generalization of the facility provided by the MapReduce framework to collect data output by the Mapper or the Reducer.

View solution

Q. __________ is the primary interface for a user to describe a MapReduce job to the Hadoop framework for execution.

View solution

Q. The ___________ executes the Mapper/ Reducer task as a child process in a separate jvm.

View solution

Q. Maximum virtual memory of the launched child-task is specified using _________

View solution

Q. Which of the following parameter is the threshold for the accounting and serialization buffers?

View solution

Q. ______________ is percentage of memory relative to the maximum heap size in which map outputs may be retained during the reduce.

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

Q. Which of the following class provides access to configuration parameters?

View solution

Q. ___________ gives site-specific configuration for a given hadoop installation.

View solution

Q. Administrators typically define parameters as final in __________ for values that user applications may not alter.

View solution