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Posted to issues@hive.apache.org by "Eugene Koifman (JIRA)" <ji...@apache.org> on 2017/02/09 00:23:42 UTC
[jira] [Commented] (HIVE-15844) Add WriteType to Explain Plan of
ReduceSinkOperator and FileSinkOperator
[ https://issues.apache.org/jira/browse/HIVE-15844?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15858756#comment-15858756 ]
Eugene Koifman commented on HIVE-15844:
---------------------------------------
update hive.txn.manager in HiveConf - remove ref to enforce bucketing - it doesn't exist in Hive2/master
> 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.
> # 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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