Rather than adding a Secondary Sort to a slow Reduce job, it is Hadoop best practice to perform which optimization?

Hadoop Auth enforces authentication on protected resources. Once authentication has been established, it sets what type of authenticating cookie?

MapReduce jobs can be written in which language?

To perform local aggregation of the intermediate outputs, MapReduce users can optionally specify which object?

To verify job status, look for the value ___ in the ___.

Which line of code implements a Reducer method in MapReduce 2.0?

Which one is the Hadoop directory service that stores the metadata related to the files present in the cluster storage?

Which are the required command line arguments for the oev command of HDFS?

Which of the following HDFS shell commands is used for setting a group for a particular file or directory?

While configuring HTTP authentication in Hadoop, which of the following is set as the value of the 'hadoop.http.filter.initializers' property?

What is the default value of the following security configuration property of the YARN architecture? yarn.timeline-service.delegation.token.renew-interval