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From "Sean Busbey (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-1793) Update Hadoop 2.0 profile to Hadoop 2.2.0
Date Wed, 27 Nov 2013 05:20:37 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-1793?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13833469#comment-13833469
] 

Sean Busbey commented on ACCUMULO-1793:
---------------------------------------

[~elserj], Hadoop 0.20 is part of the Hadoop 1.0 line. Since our examples in the README showed
building against 0.23 by specifying the hadoop 2 profile and the version (and 0.23 is part
of the Hadoop 2 lineage), it didn't seem odd me to have 1.4.x default the Hadoop 1 line to
0.20. But I'm pretty used to Hadoop versions being terrible at this point.

The binaries built against 0.20.203.0 should be binary compatible with the Hadoop 1.x releases,
but should not be binary compatible with the 2.x releases. Similarly, the binaries built against
2.2.0 won't be compatible with Hadoop 1.x releases (including 0.20.203.0). Unless we backport
(or create) some fancy shim work under ACCUMULO-1796.

Which part feels glued on? Having a third profile? Since 0.20 is a Hadoop 1 version, I'm not
sure that we need to. If it makes the insanity of Hadoop versions easier to follow, I don't
think it hurts. We could just change the name of the Hadoop 1 profile to Hadoop-0.20 and not
have 1.4 speak to 1.x.

As an aside, I think the patch would be better suited to ACCUMULO-1795 since that's the ticket
that deals with building against 0.20.203 and non-Hadoop 2 compat.


> Update Hadoop 2.0 profile to Hadoop 2.2.0
> -----------------------------------------
>
>                 Key: ACCUMULO-1793
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-1793
>             Project: Accumulo
>          Issue Type: Sub-task
>    Affects Versions: 1.4.4, 1.5.0
>            Reporter: Sean Busbey
>            Assignee: Sean Busbey
>         Attachments: 0001-ACCUMULO-1793-Changes-that-to-make-semi-sane-build-p.patch,
ACCUMULO-1793.1.patch.txt
>
>
> now that Hadoop 2 has a GA release, update the Hadoop 2.0 profile to target it.



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