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From Rohit Kelkar <rohitkel...@gmail.com>
Subject Re: uneven region distribution
Date Sat, 15 Feb 2014 00:18:39 GMT
Sorry mis-stated the version, its 0.94.2

- R


On Fri, Feb 14, 2014 at 5:59 PM, Ted Yu <yuzhihong@gmail.com> wrote:

> bq.  it does not change the status of the assignments.
>
> Can you check / pastebin master log to see what caused the balancing to
> stop ?
>
> bq. attributing the region server crash to the disproportionately high
> number of regions on that server?
>
> Checking region server log on server5 should give us more clue.
>
> bq. 0.92.4
>
> please consider upgrading :-)
>
>
> On Fri, Feb 14, 2014 at 3:52 PM, Rohit Kelkar <rohitkelkar@gmail.com>
> wrote:
>
> > I am using hbase version 0.92.4 on a 5 node cluster. I am seeing that a
> > particular region server often crashes. A status 'simple' on hbase shell
> > gives the following stats
> >
> >
> > HBase Shell; enter 'help<RETURN>' for list of supported commands. Type
> > "exit<RETURN>" to leave the HBase Shell Version 0.94.2, r1395367, Sun
> Oct 7
> > 19:11:01 UTC 2012
> > status 'simple' 4 live servers
> > server7:60020 1392017875910 requestsPerSecond=0,
> numberOfOnlineRegions=419,
> > usedHeapMB=3315, maxHeapMB=6127
> > server4:60020 1392300859332 requestsPerSecond=843,
> > numberOfOnlineRegions=379, usedHeapMB=2070, maxHeapMB=6127
> > server3:60020 1391583646998 requestsPerSecond=429,
> > numberOfOnlineRegions=653, usedHeapMB=3198, maxHeapMB=6127
> > server6:60020 1391583647588 requestsPerSecond=0,
> numberOfOnlineRegions=966,
> > usedHeapMB=2975, maxHeapMB=6127 1 dead servers
> > server5,60020,1392108515637 Aggregate load: 1272, regions: 2417
> >
> > The dead region server has 2417 regions as opposed to 419, 379, 653, 966
> > regions on other servers. Am I right in attributing the region server
> crash
> > to the disproportionately high number of regions on that server?
> >
> > If I invoke the balancer on hbase shell using the "balancer" command it
> > returns true. But it does not change the status of the assignments.
> >
> > - R
> >
>

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