What is a Distributed Cache in Hadoop?
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What is heartbeat in hdfs? Explain.
Clarify what is shuffling in map reduce?
Which are the methods in the mapper interface?
How to optimize Hadoop MapReduce Job?
What is a map side join?
mapper or reducer?
What are ‘maps’ and ‘reduces’?
Can we submit the mapreduce job from slave node?
How hadoop mapreduce works?
What is the Reducer used for?
How does MapReduce framework view its input internally?
How data is spilt in Hadoop?
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