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    When block size shall be sufficient enough as split size to process efficiently and correctly to generate the desired output by the MR job, then developer may choose such minimum logical split size is less than the block size. Here, each record size may be very small enough compared to each block size, that means, each block contains many records as full and no intersection of any record happened between blocks. In other scenario, where record size is equal to the block size.

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Reply To: In which scenario, we put logical split less than physical split?
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