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From Jack Levin <magn...@gmail.com>
Subject Re: shedding regions when one region server dies
Date Tue, 05 Oct 2010 01:23:35 GMT
http://pastebin.com/suw2QVYg this is OOME event.

When I started it up, the master eventually stopped shedding to 14
regions each (used to be 700 on 10 servers), and stayed there for a
while, I wanted 10 minutes, and stopped/started all region servers,
and they came up in 5 minutes.

-Jack

On Mon, Oct 4, 2010 at 5:48 PM, Jack Levin <magnito@gmail.com> wrote:
> 2010-10-04 17:47:25,449 DEBUG
> org.apache.hadoop.hbase.master.RegionManager: Server(s) are carrying
> only 2 regions. Server mtab5.prod.imageshack.com,60020,1285878100774
> is most loaded (290). Shedding 32 regions to pass to  least loaded
> (numMoveToLowLoaded=177)
>
>
> I observe that number of loaded regions sheds pretty much to zero
> before starting back up (taking long time in the process), even though
> I had server that OOME'ed started up again.  It seems to be there
> might be a bug in rebalancing logic?
>
> -Jack
>

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