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From "Chris Nauroth (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-11064) UnsatisifedLinkError with hadoop 2.4 JARs on hadoop-2.6 due NativeCRC32 method changes
Date Tue, 09 Sep 2014 00:04:29 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-11064?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14126345#comment-14126345
] 

Chris Nauroth commented on HADOOP-11064:
----------------------------------------

[~stevel@apache.org], did you want the scope of this jira focused on reinstating the old native
function signatures in {{NativeCrc32}}?  That's the fastest path to resolving the blocker.

The longer-term policy discussion is great too, but perhaps that's better handled separately.

> UnsatisifedLinkError with hadoop 2.4 JARs on hadoop-2.6 due NativeCRC32 method changes
> --------------------------------------------------------------------------------------
>
>                 Key: HADOOP-11064
>                 URL: https://issues.apache.org/jira/browse/HADOOP-11064
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: native
>    Affects Versions: 2.6.0
>         Environment: Hadoop 2.6 cluster, trying to run code containing hadoop 2.4 JARs
>            Reporter: Steve Loughran
>            Assignee: Colin Patrick McCabe
>            Priority: Blocker
>         Attachments: HADOOP-11064.001.patch
>
>
> The private native method names and signatures in {{NativeCrc32}} were changed in HDFS-6561
... as a result hadoop-common-2.4 JARs get unsatisifed link errors when they try to perform
checksums. 
> This essentially stops Hadoop 2.4 applications running on Hadoop 2.6 unless rebuilt and
repackaged with the hadoop- 2.6 JARs



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