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From "Christopher Tubbs (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (ACCUMULO-728) Leaks a BatchScanner thread pool for each BatchDeleter
Date Fri, 07 Jun 2013 17:22:20 GMT

     [ https://issues.apache.org/jira/browse/ACCUMULO-728?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Christopher Tubbs updated ACCUMULO-728:
---------------------------------------

    Affects Version/s:     (was: 1.3.7)
    
> Leaks a BatchScanner thread pool for each BatchDeleter
> ------------------------------------------------------
>
>                 Key: ACCUMULO-728
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-728
>             Project: Accumulo
>          Issue Type: Bug
>          Components: client
>    Affects Versions: 1.3.5, 1.3.6
>            Reporter: John Stoneham
>            Assignee: Keith Turner
>             Fix For: 1.4.0
>
>
> Each BatchDeleter (i.e., TabletServerBatchDeleter) causes a BatchScanner thread to leak.
This is because TabletServerBatchDeleter extends TabletServerBatchReader which opens a thread
pool on construction but no close() method is offered on the BatchDeleter interface.
> Workaround: downcast BatchDeleter to either BatchScanner or TabletServerBatchDeleter,
then call close().
> It appears the close() method is available on BatchDeleter from 1.4 forward, but this
still affects 1.3 series users (which is why I'm documenting it).
> Since BatchDeleter is a one-off class - call delete() and forget - it might make sense
for it to close itself instead when complete.

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