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https://issues.apache.org/jira/browse/HIVE-4331?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13750620#comment-13750620
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Sushanth Sowmyan commented on HIVE-4331:
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[~ashutoshc] : The mapreduce->mapred transition is not a tough one by
itself(apart from losing abort/commit semantics, which need to be emulated).
The Outputcommitter concept is quite a bit more involved though.
For now, I'm still +1 on this patch(the hive side) because it moves us one step
closer to that goal. I don't think we should require the OC concept being
brought in as well for it to be committed, I brought that up because I wanted
to highlight that we aren't done with this patch, and more work is required
past it, and this patch alone does not make generic OFs workable from within
Hive.
> Integrated StorageHandler for Hive and HCat using the HiveStorageHandler
> ------------------------------------------------------------------------
>
> Key: HIVE-4331
> URL: https://issues.apache.org/jira/browse/HIVE-4331
> Project: Hive
> Issue Type: Task
> Components: HCatalog
> Affects Versions: 0.11.0, 0.12.0
> Reporter: Ashutosh Chauhan
> Assignee: Viraj Bhat
> Attachments: HIVE4331_07-17.patch, StorageHandlerDesign_HIVE4331.pdf
>
>
> 1) Deprecate the HCatHBaseStorageHandler and "RevisionManager" from HCatalog.
> These will now continue to function but internally they will use the
> "DefaultStorageHandler" from Hive. They will be removed in future release of
> Hive.
> 2) Design a HivePassThroughFormat so that any new StorageHandler in Hive will
> bypass the HiveOutputFormat. We will use this class in Hive's
> "HBaseStorageHandler" instead of the "HiveHBaseTableOutputFormat".
> 3) Write new unit tests in the HCat's "storagehandler" so that systems such
> as Pig and Map Reduce can use the Hive's "HBaseStorageHandler" instead of the
> "HCatHBaseStorageHandler".
> 4) Make sure all the old and new unit tests pass without backward
> compatibility (except known issues as described in the Design Document).
> 5) Replace all instances of the HCat source code, which point to
> "HCatStorageHandler" to use the"HiveStorageHandler" including the
> "FosterStorageHandler".
> I have attached the design document for the same and will attach a patch to
> this Jira.
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