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Posted to common-user@hadoop.apache.org by Rong-en Fan <gr...@gmail.com> on 2008/07/15 03:43:34 UTC

different dfs block size

Hi,

I'm wondering what would be the memory consumption of
dfs.block.size for a fixed set of data in NameNode? I know
it is determined by # of blocks and # of replications, but
how many memory does one block will use in NameNode?
In addition, what would be the pros/cons of bigger/smaller
block size?

Thanks,
Rong-En Fan