Ed Kohlwey created ACCUMULO-804:
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Summary: 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: 1.5.0, 1.4.3
Reporter: Ed Kohlwey
Assignee: Billie Rinaldi
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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