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From kurt greaves <>
Subject Re: nodetool cleanup in parallel
Date Wed, 27 Sep 2017 03:57:32 GMT
correct. you can run it in parallel across many nodes if you have capacity.
generally see about a 10% CPU increase from cleanups which isn't a big deal
if you have the capacity to handle it + the io.

on that note on later versions you can specify -j <num jobs> to run
multiple cleanup compactions at the same time on a single node, and also
increase compaction throughput to speed the process up.

On 27 Sep. 2017 13:20, "Peng Xiao" <> wrote:


nodetool cleanup will only remove those keys which no longer belong to
those nodes,than theoretically we can run nodetool cleanup in
parallel,right?the document suggests us to run this one by one,but it's too

Peng Xiao

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