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From Robert Coli <rc...@eventbrite.com>
Subject Re: decommission too slow
Date Tue, 27 Oct 2015 21:14:59 GMT
On Mon, Oct 26, 2015 at 7:58 PM, qihuang.zheng <qihuang.zheng@fraudmetrix.cn
> wrote:

> Recently we want to delete some c* nodes for data migration.  C*
> verision:2.0.15
>
> we use *nodetool decommission* with *nohup: nohup nodetool decommission
> -h xxx *
>
> After execute 3 days already, seems this process did’t finished yet!
>

Your streams are probably hanging indefinitely.

IOW, the problem is not "decommission is slow" but "decommission will never
complete."

https://issues.apache.org/jira/browse/CASSANDRA-8611

in 2.1.10 gives a non-infinite timeout for such streams... until then your
only option is to restart the node and restart the decomission.

FWIW, you don't really need to nohup, because having nodetool connecting to
JMX has no effect on whether the decommission completes or doesn't...

=Rob

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