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From "Brandon Williams (JIRA)" <j...@apache.org>
Subject [jira] Updated: (CASSANDRA-1559) make {SuperColumn,ColumnFamily}.addColumn() correct in the face of concurrent removals
Date Thu, 17 Feb 2011 20:28:26 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-1559?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Brandon Williams updated CASSANDRA-1559:
----------------------------------------

    Fix Version/s:     (was: 0.7.2)
                   0.7.3

> make {SuperColumn,ColumnFamily}.addColumn() correct in the face of concurrent removals
> --------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-1559
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1559
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>    Affects Versions: 0.7 beta 1
>            Reporter: Peter Schuller
>            Priority: Trivial
>             Fix For: 0.7.3
>
>         Attachments: trunk-1559.txt
>
>
> As reported on the mailing list, the particular lock-less spinning used during column
addition is not correct for the case of concurrent removals. As also agreed, concurrent removals
do not actually happen.
> Attaching a patch which, as jbellis suggests as an alternative to documenting the restriction
on removals not being supported concurrently, makes addColumn() handle that case.

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