In Hadoop what is InputSplit?
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What is Distributed Cache in the MapReduce Framework?
Why MapReduce uses the key-value pair to process the data?
Does Partitioner run in its own JVM or shares with another process?
What are the various configuration parameters required to run a mapreduce job?
It can be possible that a Job has 0 reducers?
Whether the output of mapper or output of partitioner written on local disk?
Can we submit the mapreduce job from slave node?
how indexing in HDFS is done?
What is heartbeat in hdfs? Explain.
Explain what you understand by speculative execution
What is Output Format in MapReduce?
What is LazyOutputFormat in MapReduce?
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