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Posted to user@cassandra.apache.org by Andy Losey <an...@addthis.com> on 2013/08/08 22:00:18 UTC

Cassandra nodetool repair question

Afternoon, 

We are noticing nodetool repair processes are not completing after a weeks worth of time, and have resulted in some Cassandra nodes having more than one process running do to cron scheduled. We are also chasing some performance degradation after upgrading all nodes to version 1.2.8 last Friday and would like to resolve this multiple repairs running at once issue in an effort to troubleshoot our performance issues.

We'd like to know more about what is happening with the repair option. Is there a way to gracefully terminate them or any adverse affect to killing the processes we should look out for?

Thanks,
-- 
Andy L

Re: Cassandra nodetool repair question

Posted by Mohit Anchlia <mo...@gmail.com>.
But node might be streaming data as well, in that case only option is to restart node that started streaming operation

Sent from my iPhone

On Aug 8, 2013, at 5:56 PM, Andrey Ilinykh <ai...@gmail.com> wrote:

> nodetool repair just triggers repair procedure. You can kill nodetool after start, it doesn't change anything. To stop repair you have to use nodetool stop VALIDATION|COMPACTION
> 
> 
> Thank you,
> 
>   Andrey
> 
> 
> 
> On Thu, Aug 8, 2013 at 1:00 PM, Andy Losey <an...@addthis.com> wrote:
>> Afternoon,
>> 
>> We are noticing nodetool repair processes are not completing after a weeks worth of time, and have resulted in some Cassandra nodes having more than one process running do to cron scheduled. We are also chasing some performance degradation after upgrading all nodes to version 1.2.8 last Friday and would like to resolve this multiple repairs running at once issue in an effort to troubleshoot our performance issues.
>> 
>> We'd like to know more about what is happening with the repair option. Is there a way to gracefully terminate them or any adverse affect to killing the processes we should look out for?
>> 
>> Thanks,
>> -- 
>> Andy L
>

Re: Cassandra nodetool repair question

Posted by Andrey Ilinykh <ai...@gmail.com>.
nodetool repair just triggers repair procedure. You can kill nodetool after
start, it doesn't change anything. To stop repair you have to use nodetool
stop VALIDATION|COMPACTION


Thank you,

  Andrey



On Thu, Aug 8, 2013 at 1:00 PM, Andy Losey <an...@addthis.com> wrote:

>  Afternoon,
>
> We are noticing nodetool repair processes are not completing after a weeks
> worth of time, and have resulted in some Cassandra nodes having more than
> one process running do to cron scheduled. We are also chasing some
> performance degradation after upgrading all nodes to version 1.2.8 last
> Friday and would like to resolve this multiple repairs running at once
> issue in an effort to troubleshoot our performance issues.
>
> We'd like to know more about what is happening with the repair option. Is
> there a way to gracefully terminate them or any adverse affect to killing
> the processes we should look out for?
>
> Thanks,
> --
> Andy L
>
>