What does SerDe in the Hive mean?

List the elements of the Hive data model.

What happens when Block Scanner finds a faulty data block?

Describe the HDFS Safe mode.

What role does Apache Hadoop’s distributed cache play?

What are the Secondary NameNode’s functions?

What does COSHH stand for?

What occurs if a user submits a new job when NameNode is down?

List the standard port numbers on which Hadoop’s task tracker, NameNode, and job tracker operate.

What do you know about FSCK?