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From Gianluca Borello <>
Subject Re: Pending compactions not going down on some nodes of the cluster
Date Mon, 21 Mar 2016 22:08:49 GMT
On Mon, Mar 21, 2016 at 12:50 PM, Gianluca Borello <>

> - It's also interesting to notice how the compaction in the previous
> example is trying to compact ~37 GB, which is essentially the whole size of
> the column family message_data1 as reported by cfstats:

Also related to this point, now I'm seeing something even more odd: some
compactions are way bigger than the size of the column family itself, such

$ nodetool compactionstats -H
pending tasks: 110
   compaction type   keyspace           table   completed       total
 unit   progress
        Compaction     draios   message_data1    26.28 GB   118.73 GB
bytes     22.13%
Active compaction remaining time :   0h04m30s

It says the total is 118.73 GB, but that column family never got anywhere
close to that size, it has always stayed around ~30GB:

$ du -hs /raid0/cassandra/data/draios/message_data1-*

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