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From Syed Wasti <mdwa...@hotmail.com>
Subject Data Block Size ?
Date Thu, 15 Jul 2010 18:40:27 GMT


I am new to hadoop and looking for some answers to clear my basic concepts on Hadoop.

Will it matter what the data block size is ? 

It is recommended to have a block size of 64 MB, but if we want to have the data block size
to 128 MB, should this effect the performance ?

Does the size of the map jobs created on each datanodes in anyway depend the block size ?

Thanks for the support.



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