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From "Kathey Marsden (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-4059) If space reclamation cannot obtain container lock it will not retry getting the lock
Date Tue, 17 Feb 2009 00:57:59 GMT

    [ https://issues.apache.org/jira/browse/DERBY-4059?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12674081#action_12674081
] 

Kathey Marsden commented on DERBY-4059:
---------------------------------------

I am trying to write a test where having the post commit retries will actually help, but am
having trouble making a case.  Even if I change ClobReclamationTest.xtestMultiThreadedUpdateTableLocking()
to have each of the two threads  update just two rows, it seems to give up after three retries.
 Is there any wait between retries of post commit actions or does it just loop through its
todo list and retry when it is finished with its current queue?


> If space reclamation cannot obtain container lock it will not retry getting the lock
> ------------------------------------------------------------------------------------
>
>                 Key: DERBY-4059
>                 URL: https://issues.apache.org/jira/browse/DERBY-4059
>             Project: Derby
>          Issue Type: Sub-task
>          Components: Store
>    Affects Versions: 10.1.3.1, 10.2.2.0, 10.3.3.0, 10.4.2.0, 10.5.0.0
>            Reporter: Kathey Marsden
>            Assignee: Kathey Marsden
>            Priority: Minor
>
> As noted in DERBY-4054 openContainerNW throws an exception if it canno get the container
lock and bypasses the retry logic.  See:
> https://issues.apache.org/jira/browse/DERBY-4054?focusedCommentId=12673376#action_12673376
> We should catch the exception and retry if we can't get the container lock. This probably
won't fix the repro for DERBY-4054, but should be helpful in some user scenarios.

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