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https://issues.apache.org/jira/browse/HIVE-15844?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15888601#comment-15888601
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Prasanth Jayachandran commented on HIVE-15844:
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Can you please attach patch to RB?
> Add WriteType to Explain Plan of ReduceSinkOperator and FileSinkOperator
> ------------------------------------------------------------------------
>
> Key: HIVE-15844
> URL: https://issues.apache.org/jira/browse/HIVE-15844
> Project: Hive
> Issue Type: Bug
> Components: Transactions
> Reporter: Eugene Koifman
> Assignee: Eugene Koifman
> Fix For: 1.0.0
>
> Attachments: HIVE-15844.01.patch, HIVE-15844.02.patch,
> HIVE-15844.03.patch, HIVE-15844.04.patch, HIVE-15844.05.patch,
> HIVE-15844.06.patch
>
>
> # both FileSinkDesk and ReduceSinkDesk have special code path for
> Update/Delete operations. It is not always set correctly for ReduceSink.
> ReduceSinkDeDuplication is one place where it gets lost. Even when it isn't
> set correctly, elsewhere we set ROW_ID to be the partition column of the
> ReduceSinkOperator and UDFToInteger special cases it to extract bucketId from
> ROW_ID. We need to modify Explain Plan to record Write Type (i.e.
> insert/update/delete) to make sure we have tests that can catch errors here.
> # Add some validation at the end of the plan to make sure that RSO/FSO which
> represent the end of the pipeline and write to acid table have WriteType set
> (to something other than default).
> # We don't seem to have any tests where number of buckets is > number of
> reducers. Add those.
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