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From "Anoop Sam John (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-19386) HBase UnsafeAvailChecker returns false on Arm64
Date Mon, 04 Dec 2017 06:51:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-19386?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16276369#comment-16276369
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Anoop Sam John commented on HBASE-19386:
----------------------------------------

Can we add this id also in the comment around this code pls?  Pls provide an addendum patch.


> HBase UnsafeAvailChecker returns false on Arm64
> -----------------------------------------------
>
>                 Key: HBASE-19386
>                 URL: https://issues.apache.org/jira/browse/HBASE-19386
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 3.0.0
>            Reporter: Yuqi Gu
>            Assignee: Yuqi Gu
>            Priority: Minor
>             Fix For: 2.0.0-beta-1
>
>         Attachments: HBASE-19386.patch
>
>
> Arm64v8 supports unaligned access .
> But UnsafeAvailChecker returns false due to a JDK bug.
> The false of UnsafeAvailChecker return also causes the HBase Unit tests(FuzzyRowFilter,
TestFuzzyRowFilterEndToEnd, TestFuzzyRowAndColumnRangeFilter) failures. 
> Enable Arm64 unaligned support by providing a hard-code workaround for the JDK bug.



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