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From "Mike Drob (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-3402) Introduction of the mapreduce maven module breaks 1.6 compatibility
Date Fri, 12 Dec 2014 17:09:13 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-3402?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14244455#comment-14244455
] 

Mike Drob commented on ACCUMULO-3402:
-------------------------------------

Commenting here instead of on the review, because it's more a design issue than a code issue.

Ed's comment on ACCUMULO-1424 [here|https://issues.apache.org/jira/browse/ACCUMULO-1242?focusedCommentId=13812208&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13812208]
becomes relevant again. Initially I solved it by moving the classes out of core, but that
apparently caused other issues. ;)

Can we file a follow on to address that and improve how we handle logging in the MR classes
again? Otherwise, the patch LGTM (although admittedly, I only skimmed it, since much of it
looked like classes were just added/deleted/moved).

> Introduction of the mapreduce maven module breaks 1.6 compatibility
> -------------------------------------------------------------------
>
>                 Key: ACCUMULO-3402
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-3402
>             Project: Accumulo
>          Issue Type: Bug
>          Components: client
>            Reporter: Josh Elser
>            Assignee: Josh Elser
>            Priority: Blocker
>             Fix For: 1.7.0
>
>
> The introduction of mapreduce maven module breaks backwards compatibility with 1.6.
> Code that previously worked against 1.6 (that used our mapreduce classes) is now broken
without a deprecation cycle -- specifically trying to compile Hive against Accumulo 1.7 is
broken.
> While the classes themselves haven't technically changed, the required dependencies have.
In my eyes, this is an incompatible change that violates our current public API rules.



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