What is output format in hadoop?
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On what basis Namenode will decide which datanode to write on?
What are the steps to submit a Hadoop job?
Knox and Hadoop Development Tools?
what is a datanode?
What is speculative execution in Hadoop?
Explain the use of tasktracker in the hadoop cluster?
what is meaning Replication factor?
What is the communication channel between client and namenode/datanode?
What is the default block size in Hadoop 1 and in Hadoop 2? Can it be changed?
What is the purpose of RawComparator interface?
What is the jobtracker?
What do you understand from Node redundancy and is it exist in hadoop cluster?
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