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From Nate McCall <>
Subject Re: 1.2 leveled compactions can affect big bunch of writes? how to stop/restart them?
Date Thu, 19 Sep 2013 16:19:47 GMT
As opposed to stopping compaction altogether, have you experimented with
turning down compaction_throughput_mb_per_sec (16mb default) and/or
explicitly setting concurrent_compactors (defaults to the number of cores,

On Thu, Sep 19, 2013 at 10:58 AM, rash aroskar <>wrote:

> Hi,
> In general leveled compaction are I/O heavy so when there are bunch of
> writes do we need to stop leveled compactions at all?
> I found the nodetool stop COMPACTION, which states it stops compaction
> happening, does this work for any type of compaction? Also it states in
> documents 'eventually cassandra restarts the compaction', isn't there a way
> to control when to start the compaction again manually ?
> If this is not applicable for leveled compactions in 1.2, then what can be
> used for stopping/restating those?
> Thanks,
> Rashmi

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