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From "Jay Kreps (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (KAFKA-1008) Unmap before resizing
Date Thu, 29 Aug 2013 00:23:52 GMT

     [ https://issues.apache.org/jira/browse/KAFKA-1008?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jay Kreps updated KAFKA-1008:
-----------------------------

    Attachment: KAFKA-0.8-1008-v7.patch

Attached a version rebased to 0.8.
                
> Unmap before resizing
> ---------------------
>
>                 Key: KAFKA-1008
>                 URL: https://issues.apache.org/jira/browse/KAFKA-1008
>             Project: Kafka
>          Issue Type: Bug
>          Components: core, log
>    Affects Versions: 0.8
>         Environment: Windows, Linux, Mac OS
>            Reporter: Elizabeth Wei
>            Assignee: Jay Kreps
>              Labels: patch
>             Fix For: 0.8
>
>         Attachments: KAFKA-0.8-1008-v7.patch, KAFKA-1008-v6.patch, KAFKA-trunk-1008-v7.patch,
unmap-v5.patch
>
>   Original Estimate: 1h
>  Remaining Estimate: 1h
>
> While I was studying how MappedByteBuffer works, I saw a sharing runtime exception on
Windows. I applied what I learned to generate a patch which uses an internal open JDK API
to solve this problem.
> Following Jay's advice, I made a helper method called tryUnmap(). 

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