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From "Sylvain Lebresne (Resolved) (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (CASSANDRA-4070) CFS.setMaxCompactionThreshold doesn't allow 0 unless min is also 0
Date Thu, 22 Mar 2012 12:46:22 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-4070?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sylvain Lebresne resolved CASSANDRA-4070.
-----------------------------------------

    Resolution: Fixed
      Reviewer: jbellis

Committed, thanks

I agree that we probably should have a better way to disable compaction. Actually given that
leveled compaction pretty much ignore the max and min threshold, I think we should think about
moving those to the compaction options.
                
> CFS.setMaxCompactionThreshold doesn't allow 0 unless min is also 0
> ------------------------------------------------------------------
>
>                 Key: CASSANDRA-4070
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4070
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 1.0.0
>            Reporter: Sylvain Lebresne
>            Assignee: Sylvain Lebresne
>            Priority: Trivial
>             Fix For: 1.0.9
>
>         Attachments: 4070.patch
>
>
> Thrift allows to set the max compaction threshold to 0 to disable compaction. However,
CFS.setMaxCompactionThreshold throws an exception min > max even if max is 0.
> Note that even if someone sets 0 for both the min and max thresholds, we'll can have
a problem because SizeTieredCompaction calls CFS.setMaxCompactionThreshold before calling
CFS.setMinCompactionThreshold and thus will trigger the RuntimeException when it shouldn't.

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