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Data is physically divided into blocks and logically divided into input splits.

My question is how this input splits are decided as number of mappers depends on number of input splits and who is responsible to divide data into input splits?

philantrovert
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Ashwini gupta
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    Some answer here : https://stackoverflow.com/questions/2831507/how-does-hadoop-perform-input-splits – Xire Aug 30 '17 at 15:26
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    Possible duplicate of [How does Hadoop perform input splits?](https://stackoverflow.com/questions/2831507/how-does-hadoop-perform-input-splits) – philantrovert Aug 30 '17 at 15:45
  • Also helpful is https://stackoverflow.com/questions/14291170/how-does-hadoop-process-records-split-across-block-boundaries – tk421 Aug 30 '17 at 20:20

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