how can we change Replication Factor?
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What platform and java version are required to run hadoop?
What is partioner in hadoop? Where does it run,mapper or reducer?
What is a block and block scanner in HDFS?
What does /var/hadoop/pids do?
How can we check whether namenode is working or not?
What is keyvaluetextinputformat?
What is version-id mismatch error in hadoop?
Define tasktracker.
What is the difference between Hadoop and Traditional RDBMS?
Can you give us some more details about ssh communication between masters and the slaves?
Explain the use of tasktracker in the hadoop cluster?
What is rack-aware replica placement policy?
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