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From bharath vissapragada <bharathvissapragada1...@gmail.com>
Subject Data nodes loosing connection frequently
Date Thu, 21 Apr 2011 10:36:55 GMT
Hi all,

We have a 10 Node cluster . Master 8Gig Ram ,Slaves (9) 4Gig Ram each .
Yesterday we were copying data of size 110GB into the cluster using
"copyFromLocal" command from the Master server. (Master node is not being
used as a datanode). During this process, datanodes are frequently loosing
connection and this is generating "unreachable node" exceptions in the log.
This was happening quite frequently for many nodes one after the other.

Any parameters I must tune to remove this ? Any suggestions are highly

Thanks and Regards
Bharath .V
4th Year undergraduate

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