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From Alexander Dejanovski <a...@thelastpickle.com>
Subject Re: Many SSTables only on one node
Date Thu, 05 Apr 2018 09:09:41 GMT
Hi Dmitry,

could you tell us which compaction strategy that table is currently using ?
Also, what is the compaction max throughput and is auto-compaction
correctly enabled on that node ?

Did you recently run repair ?

Thanks,

On Thu, Apr 5, 2018 at 10:53 AM Dmitry Simonov <dimmoborgir@gmail.com>
wrote:

> Hello!
>
> Could you please give some ideas on the following problem?
>
> We have a cluster with 3 nodes, running Cassandra 2.2.11.
>
> We've recently discovered high CPU usage on one cluster node, after some
> investigation we found that number of sstables for one CF on it is very
> big: 5800 sstables, on other nodes: 3 sstable.
>
> Data size in this keyspace was not very big ~100-200Mb per node.
>
> There is no such problem with other CFs of that keyspace.
>
> nodetool compact solved the issue as a quick-fix.
>
> But I'm wondering, what was the cause? How prevent it from repeating?
>
> --
> Best Regards,
> Dmitry Simonov
>
-- 
-----------------
Alexander Dejanovski
France
@alexanderdeja

Consultant
Apache Cassandra Consulting
http://www.thelastpickle.com

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