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From "Eugene Koifman (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-15844) Add WriteType to Explain Plan of ReduceSinkOperator and FileSinkOperator
Date Wed, 08 Feb 2017 01:07:41 GMT
Eugene Koifman created HIVE-15844:
-------------------------------------

             Summary: 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


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.



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