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HBase, mail # user - Multiple regionservers on a single node


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答复: Multiple regionservers on a single node
谢良 2012-12-07, 09:58
Emm, have you tried to tune your GC deeply? please provide the exactly VM options and jdk version and GC logs..
In our test cluster this week, i managed to reduce the longest STW from 22+ seconds(Xmx20G) to 1.1s(Xmx48G) under a very heavy YCSB stress long-term-testing.

Also it would be better to ask help from hotspot-gc-use/hotspot-gc-dev mail list:)
And the G1GC within jdk7u4+ is a potential solution for large-heap senario as well:)
________________________________________
> On Mon, Dec 3, 2012 at 3:39 PM, Ishan Chhabra <[EMAIL PROTECTED]
> >wrote:
>
> > Hi,
> > Has anybody tried to run multiple RegionServers on a single physical
> > node? Are there deep technical issues or minor impediments that would
> > hinder this?
> >
> > We are trying to do this because we are facing a lot of GC pauses on the
> > large heap sizes (~70G) that we are using, which leads to a lot of
> timeouts
> > in our latency critical application. More processes with smaller heaps
> > would help in mitigating this issue.
> >
> > Any experience or thoughts on this would help.
> > Thanks!
> >
> > --
> > *Ishan Chhabra *| Rocket Scientist | Rocketfuel Inc. | *m *650 556 6803
> >
>
>
>
> --
>
> Robert Dyer
> [EMAIL PROTECTED]
>