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From "Junping Du (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-12690) Consolidate access of sun.misc.Unsafe
Date Mon, 22 Feb 2016 18:39:18 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-12690?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Junping Du updated HADOOP-12690:
    Attachment: HADOOP-12690-v3.1.patch

Missing an import in v3 patch which will cause build failure. Update it in v3.1 patch.

> Consolidate access of sun.misc.Unsafe 
> --------------------------------------
>                 Key: HADOOP-12690
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12690
>             Project: Hadoop Common
>          Issue Type: Bug
>            Reporter: Junping Du
>            Assignee: Junping Du
>         Attachments: HADOOP-12690-v2.1.patch, HADOOP-12690-v2.patch, HADOOP-12690-v3.1.patch,
HADOOP-12690-v3.patch, HADOOP-12690.patch
> Per discussion in Hadoop-12630 (https://issues.apache.org/jira/browse/HADOOP-12630?focusedCommentId=15082142&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15082142),
we found the access of sun.misc.Unsafe could be problematic for some JVMs in other platforms.
Also, hints from other comments, it is better to consolidate it as a helper/utility method
to shared with several places (FastByteComparisons, NativeIO, ShortCircuitShm). 

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