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From Ryan King <r...@twitter.com>
Subject Re: Avoid Simultaneous Minor Compactions?
Date Mon, 22 Aug 2011 05:39:43 GMT
You should throttle your compactions to a sustainable level.

-ryan

On Sun, Aug 21, 2011 at 10:22 PM, Hefeng Yuan <hfyuan@rhapsody.com> wrote:
> We just noticed that at one time, 4 nodes were doing minor compaction together, each
of them took 20~60 minutes.
> We're on 0.8.1, 6 nodes, RF5.
> This simultaneous compactions slowed down the whole cluster, we have local_quorum consistency
level, therefore, dynamic_snitch is not helping us.
>
> Aside from lower down the compaction thread priority, is there any other way to tell
the cluster hold on doing this if other nodes are already compacting?
>
> Thanks,
> Hefeng

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