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What does the command mapred.job.tracker do?
Should we use RAID in Hadoop or not?
Can the balancer be run while Hadoop is in use?
What is the use of combiners in the hadoop framework?
How to change Replication Factor For below cases ?
What are the site-specific configuration files in Hadoop?
Explain the overview of hadoop history breifly?
What is IdentityMapper?
What is the default block size in Hadoop 1 and in Hadoop 2? Can it be changed?
What is the functionality of jobtracker in hadoop?
How to change replication factor of files already stored in HDFS?
What is inputsplit in hadoop? Explain.
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