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Posted to commits@cassandra.apache.org by "Bartłomiej Romański (JIRA)" <ji...@apache.org> on 2012/09/18 02:41:08 UTC

[jira] [Created] (CASSANDRA-4673) Compaction of HintsColumnFamily stucks

Bartłomiej Romański created CASSANDRA-4673:
----------------------------------------------

             Summary: 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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[jira] [Commented] (CASSANDRA-4673) Compaction of HintsColumnFamily stucks

Posted by "Jonathan Ellis (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/CASSANDRA-4673?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13457861#comment-13457861 ] 

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

Let us know if you can reproduce on 1.1.5.
                
> 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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[jira] [Commented] (CASSANDRA-4673) Compaction of HintsColumnFamily stucks

Posted by "John Watson (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/CASSANDRA-4673?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13472656#comment-13472656 ] 

John Watson commented on CASSANDRA-4673:
----------------------------------------

We also experienced this issue on SSDs and after reading CASSANDRA-4492 and CASSANDRA-4182

Turned off {{multithread_compaction}} and this issue went away
                
> 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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