How can you achieve security in Hadoop?
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What is big data?
What do you know about FSCK?
Expand on HDFS.
How do you turn off the HDFS Data Node’s Block Scanner?
Describe how Hive is used in the Hadoop ecosystem.
Describe the purpose of the .hiverc file in Hive.
What are the Secondary NameNode’s functions?
What does Hadoop’s Heartbeat mean?
Define Balancer in HDFS.