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From Varun Sharma <va...@pinterest.com>
Subject Re: Balancer switch runs causing problems
Date Tue, 28 Jan 2014 03:47:24 GMT
The default one with 0.94.7... - I dont see any of those logs. Also we
turned off the balancer switch - but looks like sometimes we still see a
large number of requests to .META. table every 5 minutes.

Varun


On Mon, Jan 27, 2014 at 7:37 PM, Ted Yu <yuzhihong@gmail.com> wrote:

> In HMaster#balance(), we have (same for 0.94 and 0.96):
>
>         for (RegionPlan plan: plans) {
>           LOG.info("balance " + plan);
>
> Do you see such log in master log ?
>
>
> On Mon, Jan 27, 2014 at 7:26 PM, Varun Sharma <varun@pinterest.com> wrote:
>
> > We are seeing one other issue with high read latency (p99 etc.) on one of
> > our read heavy hbase clusters which is correlated with the balancer runs
> -
> > every 5 minutes.
> >
> > If there is no balancing to do, does the balancer only scan the table
> every
> > 5 minutes - does it do anything on top of that if the regions are
> balanced
> > ?
> >
> > Varun
> >
>

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