Hi All,

Just wanted to know, what is the maximum and practical dfs.block.size used in 
production/test clusters.

  Current default value is 128MB and it can support upto 128TB ( Yup, right. 
It's just a configuration value though)

   I have seen clusters using upto 1G block size for big files.

   Is there anyone using >2GB for block size?

  This is just to check, whether any compatibility issue arises if we reduce 
the max supported blocksize to 32GB ( to be safer side ).

-vinay

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