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From "Stu Hood (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-2454) Possible deadlock for counter mutations
Date Mon, 11 Apr 2011 21:49:05 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-2454?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Stu Hood updated CASSANDRA-2454:
--------------------------------

    Attachment: 0001-Don-t-re-submit-to-the-mutation-stage.txt

Patch. (credit to Kelvin Kakugawa)

> Possible deadlock for counter mutations
> ---------------------------------------
>
>                 Key: CASSANDRA-2454
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-2454
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Stu Hood
>             Fix For: 0.8
>
>         Attachments: 0001-Don-t-re-submit-to-the-mutation-stage.txt
>
>
> {{StorageProxy.applyCounterMutation}} is executed on the mutation stage, but it also
submits tasks to the mutation stage, and then blocks for them. If there are more than a few
concurrent mutations, this can lead to deadlock.

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