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From stack <st...@duboce.net>
Subject Re: Load Balancing problem for HBase to host data in small size under high load
Date Fri, 26 Sep 2008 15:18:37 GMT
Jean-Daniel Cryans wrote:
> Zhou,
>
> No sorry there is no guide tho I'm sure that searching through this mailing
> list you would find some answers.
I just happened to be looking into this last night (smile).

To bring on a split, try the following:

1. Set down the hbase.region.memcache.flush.size on your table. There is
a bug that prevents you making this adjustment from the shell at the
moment but for a workaround, see
https://issues.apache.org/jira/browse/HBASE-903.
2. Then, wait till the optional flush runs
(hbase.regionserver.optionalcacheflushinterval). Default is every 30
minutes.

If you want to run permanently with the smaller split size, you should
do as you posit, and lower the flush size --
hbase.hregion.memcache.flush.size -- in same proportion by which you
lowered split size.

St.Ack

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