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From sankalp kohli <kohlisank...@gmail.com>
Subject Re: 1.2 leveled compactions can affect big bunch of writes? how to stop/restart them?
Date Thu, 19 Sep 2013 16:33:42 GMT
You cannot start level compaction. It will run based on data in each level.


On Thu, Sep 19, 2013 at 9:19 AM, Nate McCall <nate@thelastpickle.com> wrote:

> 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,
> iirc).
>
>
> On Thu, Sep 19, 2013 at 10:58 AM, rash aroskar <rashmi.aroskar@gmail.com>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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