[jira] [Reopened] (ACCUMULO-804) Hadoop 2.0 Support

["Eric Newton (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ACCUMULO-804?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Eric Newton reopened ACCUMULO-804:
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      Assignee: Eric Newton  (was: Billie Rinaldi)

In hadoop 2.0, listStatus and delete on an a non-existent file throws FileNotFoundException, which is *not* the same as hadoop 1.0.
                
> 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: Eric Newton
>              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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