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What is Identity reducer?
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Can you define udf?
Is it possible to rename the output file, and if so, how?
What does jps command do in Hadoop?
Explain about Hadoop file system and processing framework?
How many job tracker processes can run on a single Hadoop cluster?
Which are the three modes in which hadoop can be run?
Explain the Single point of Failure in Hadoop?
Can we deploye job tracker other than name node?
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Why does one remove or add nodes in a Hadoop cluster frequently?
What are the main components in Hadoop Eco-System and what are their functions ?
How can native libraries be included in yarn jobs?
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