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From Vitaliy Semochkin <vitaliy...@gmail.com>
Subject does reduce > copy (at 0.52 MB/s) means network or other IO problem?
Date Tue, 05 Oct 2010 13:18:52 GMT
Hello,

I often see reduce > copy (at 0.52 MB/s)  phase with such speed.
Despite in my cluster all 5 nodes are in same rack.
Does it mean any network or other IO problems, or other reasons can
cause such slow speed?

Thanks in Advance,
Vitaliy S

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