Which of the following statements is correct about the Hive joins?

Which one is used for changing the group of a file?

Suppose you need to select a storage system that supports Resource Manager High Availability (RM HA). Which of the following types of storage should be selected in this case?

Which statement is correct about the Hadoop file system namespace?

Which Hadoop command is used for creating a file of zero length?

Consider an input file named abc.dat.txt with default block size 128 MB. Which one is the correct command that will upload this file into an HDFS, with a block size of 512 MB?

To what does the Mapper map input key/value pairs?

In what format does RecordWriter write an output file?

In the Hadoop system, what administrative mode is used for maintenance?

When implemented on a public cloud, with what does Hadoop processing interact?

What is the output of the Reducer?