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From "Jonathan Ellis (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-3666) Changing compaction strategy from Leveled to SizeTiered logs millions of messages about nothing to compact
Date Fri, 23 Dec 2011 20:24:30 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-3666?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jonathan Ellis updated CASSANDRA-3666:
--------------------------------------

    Affects Version/s:     (was: 1.0.6)
                       1.0.0
              Summary: Changing compaction strategy from Leveled to SizeTiered logs millions
of messages about nothing to compact  (was: Changing compaction strategy from Leveled to SizeTiered
puts the node down)
    
> Changing compaction strategy from Leveled to SizeTiered logs millions of messages about
nothing to compact
> ----------------------------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-3666
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-3666
>             Project: Cassandra
>          Issue Type: Bug
>    Affects Versions: 1.0.0
>         Environment: Windows Server 2008 R2 64bit
>            Reporter: Viktor Jevdokimov
>            Assignee: Jonathan Ellis
>              Labels: compaction
>             Fix For: 1.0.7
>
>         Attachments: 3666.txt
>
>
> When column family compaction strategy is changed from Leveled to SizeTiered and there're
Leveled compaction tasks pending, Cassandra starting to flood in logs with thousands per sec
messages:
> Nothing to compact in ColumnFamily1.  Use forceUserDefinedCompaction if you wish to force
compaction of single sstables (e.g. for tombstone collection)
> As a result, log disk is full and system is down.

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