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From "Dimitar Dimitrov (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-13801) CompactionManager sometimes wrongly determines that a background compaction is running for a particular table
Date Wed, 06 Dec 2017 19:34:00 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-13801?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Dimitar Dimitrov updated CASSANDRA-13801:
-----------------------------------------
    Attachment: c13801-2.2-testall.png
                c13801-3.0-testall.png
                c13801-3.11-testall.png
                c13801-trunk-testall.png

> CompactionManager sometimes wrongly determines that a background compaction is running
for a particular table
> -------------------------------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-13801
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-13801
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Compaction
>            Reporter: Dimitar Dimitrov
>            Assignee: Dimitar Dimitrov
>            Priority: Minor
>         Attachments: c13801-2.2-testall.png, c13801-3.0-testall.png, c13801-3.11-testall.png,
c13801-trunk-testall.png
>
>
> Sometimes after writing different rows to a table, then doing a blocking flush, if you
alter the compaction strategy, then run background compaction and wait for it to finish, {{CompactionManager}}
may decide that there's an ongoing compaction for that same table.
> This may happen even though logs don't indicate that to be the case (compaction may still
be running for system_schema tables).



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