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From "Billie Rinaldi (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-804) Hadoop 2.0 Support
Date Wed, 06 Mar 2013 23:18:14 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-804?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13595262#comment-13595262
] 

Billie Rinaldi commented on ACCUMULO-804:
-----------------------------------------

We already have 8 sets, so this would make it 16?  Might be a little excessive.  How does
Accumulo respond to directories in general.classpaths that don't exist?  If that doesn't cause
an error, we could just add the 2.0 classpaths into the existing examples and they'd work
for both.
                
> Hadoop 2.0 Support
> ------------------
>
>                 Key: ACCUMULO-804
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-804
>             Project: Accumulo
>          Issue Type: Improvement
>          Components: client
>    Affects Versions: 1.4.3
>            Reporter: Ed Kohlwey
>            Assignee: Billie Rinaldi
>              Labels: hackathon
>             Fix For: 1.5.0
>
>
> We should start thinking about Hadoop 2 support now that it is Cloudera's recommended
distribution and many new Hadoop users will probably be adopting it.
> When I investigated this first a few months ago it seemed like the biggest barrier to
this was that all the Map/Reduce related tests are implemented using pseudo-private constructors
from Hadoop 1.0 that are no-longer present in Hadoop 2.0.
> The main strategy to fix this should probably be to adopt the Map/Reduce cluster test
object for testing the various Accumulo input formats instead of instrumenting them directly.
I have used this convenience object successfully on tests utilizing MockInstance, so I think
it should work fine.
> There may also be some filesystem API issues but I don't think they will be too severe.
> The other main issue is that we will need to actually deploy on Hadoop 1 and 2 and run
the integration tests once we start supporting both, so that will be a headache for release
testing that we should think through.

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