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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-4673) Compaction of HintsColumnFamily stucks
Date Sun, 24 Mar 2013 06:09:18 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-4673?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13612008#comment-13612008
] 

Jonathan Ellis commented on CASSANDRA-4673:
-------------------------------------------

The multi-threaded compaction deadlock was fixed in CASSANDRA-4492.
                
> Compaction of HintsColumnFamily stucks
> --------------------------------------
>
>                 Key: CASSANDRA-4673
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4673
>             Project: Cassandra
>          Issue Type: Bug
>    Affects Versions: 1.1.1
>         Environment: We've got a 24 nodes cluster with 3 virtual data centers. We've
got 7 nodes with SSD drives. We are operating under very heavy read/write load. We typically
seeing CPU usage >90% on our machines.
> We are using 1.1.2 - why this version is not listed in the 'Affected Version' drop down?
>            Reporter: Bartłomiej Romański
>
> On some nodes the compaction of HintsColumnFamily stucked. Here is a typical output of
'nodetool compactionstats':
> pending tasks: 1
>           compaction type        keyspace   column family bytes compacted     bytes total
 progress
>                Compaction          systemHintsColumnFamily       346205828       346909662
   99.80%
> Active compaction remaining time :   0h00m00s
> Rebooting a node does not help. The compaction starts immediately after booting and stucks
and the same point.
> If this can be related we are also expiring a problem described in CASSANDRA-4639.

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