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From Anurag Tangri <anurag_tan...@yahoo.com>
Subject Re: HDFS balancer ending with error
Date Fri, 30 Jan 2015 01:41:43 GMT
Is your cluster fully upgraded to CDH5 ?


Thanks,
Anurag Tangri

> On Jan 29, 2015, at 6:33 AM, Juraj jiv <fatcap.jiv@gmail.com> wrote:
> 
> Hello,
> I noticed our CDH5 cluster is not balanced and balancer role is missing. So i added via
cloudera manager new balancer role and clicked on rebalance in hdfs menu. After some time
task ended as failed.
> 
> In logs i can balancer started but when it want to start moving blocks all failed with
message like:
> 2015-01-29 15:26:55,131 WARN  [pool-4-thread-4] balancer.Balancer (Balancer.java:dispatch(362))
- Failed to move blk_1095182943_21451284 with size=43 from 10.xx.xx.14:50010 to 10.xx.xx.12:50010
through 10.xx.xx.14:50010: Premature EOF: no length prefix available
> Any idea what is the problem about? Cluster is working fine so i have no clue. Maybe
i need restart HDFS service first?
> 
> Thanks,
> JV

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