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which time actaul block size assign ? Is it provide at spliting time in Mapper or after MapReduce flow?

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which time actaul block size assign ? Is it provide at spliting time in Mapper or after MapReduce flow?

@Manish Gupta @Eric Hanson @Jay SenSharma
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Re: which time actaul block size assign ? Is it provide at spliting time in Mapper or after MapReduce flow?

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Re: which time actaul block size assign ? Is it provide at spliting time in Mapper or after MapReduce flow?

Re: which time actaul block size assign ? Is it provide at spliting time in Mapper or after MapReduce flow?

@rbiswas yea Actually splitSize is equal to block size, so I want to know if we assign block size at SplitTime then job contains that memory for whole process or after reducer any changes;