What is your favourite tool in the hadoop ecosystem?
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What do you know about nlineoutputformat?
Why the name ‘hadoop’?
What are the default configuration files that are used in hadoop?
Define a task tracker?
Why we cannot do aggregation (addition) in a mapper? Why we require reducer for that?
What is the main purpose of HDFS fsck command?
How to enable/configure the compression of map output data in hadoop?
What do shuffling do?
What is a spill factor with respect to the ram?
What do you know by storage and compute node?
What are the site-specific configuration files in Hadoop?
How a task is scheduled by a jobtracker?
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