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https://issues.apache.org/jira/browse/HADOOP-12690?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16824505#comment-16824505
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Wei-Chiu Chuang commented on HADOOP-12690:
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We probably want to redo this work. sun.misc.Unsafe is removed from JDK11 so
better to remove the use of this API entirely. Similar to HADOOP-12760.
> 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
> Priority: Major
> 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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