How to keep HDFS cluster balanced?
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What will you do when NameNode is down?
How to change replication factor of files already stored in HDFS?
Define fault tolerance?
What exactly is hadoop?
What are the port numbers of namenode, job tracker and task tracker?
Define streaming access?
What is the difference between rdbms and hadoop?
Can hive run without hadoop?
How does master slave architecture in the hadoop?
What are active and passive "NameNodes"?
What is a JobTracker in Hadoop? How many instances of JobTracker run on a Hadoop Cluster?
What is the purpose of RawComparator interface?
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