What is rack-aware replica placement policy?
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What are sink processors?
How does a namenode handle the failure of the data nodes?
What is the communication channel between client and namenode/datanode?
What do sorting do?
What are the port numbers of namenode, job tracker and task tracker?
Explain the shuffle?
What is nlineoutputformat?
What is HDFS block size and what did you chose in your project?
What is safe mode in Hadoop?
Define a datanode?
Mention what is the use of Context Object?
What is the difference between traditional RDBMS and Hadoop?
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