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https://issues.apache.org/jira/browse/HIVE-16100?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15896142#comment-15896142
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Gopal V commented on HIVE-16100:
--------------------------------
The query23.q is a flaky result - test failures are unrelated.
{code}
ql/src/test/results/clientpositive/perf/query23.q.out
1,2d0
< Warning: Shuffle Join MERGEJOIN[382][tables = [$hdt$_1, $hdt$_2]] in Stage
'Reducer 51' is a cross product
< Warning: Shuffle Join MERGEJOIN[383][tables = [$hdt$_1, $hdt$_2, $hdt$_0]] in
Stage 'Reducer 52' is a cross product
4a3,4
> Warning: Shuffle Join MERGEJOIN[382][tables = [$hdt$_1, $hdt$_2]] in Stage
> 'Reducer 51' is a cross product
> Warning: Shuffle Join MERGEJOIN[383][tables = [$hdt$_1, $hdt$_2, $hdt$_0]] in
> Stage 'Reducer 52' is a cross product
{code}
[~prasanth_j]: can you review?
> Dynamic Sorted Partition optimizer loses sibling operators
> ----------------------------------------------------------
>
> Key: HIVE-16100
> URL: https://issues.apache.org/jira/browse/HIVE-16100
> Project: Hive
> Issue Type: Bug
> Components: Query Planning
> Affects Versions: 1.2.1, 2.2.0, 2.1.1
> Reporter: Gopal V
> Assignee: Gopal V
> Attachments: HIVE-16100.1.patch, HIVE-16100.2.patch,
> HIVE-16100.2.patch
>
>
> https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/optimizer/SortedDynPartitionOptimizer.java#L173
> {code}
> // unlink connection between FS and its parent
> fsParent = fsOp.getParentOperators().get(0);
> fsParent.getChildOperators().clear();
> {code}
> The optimizer discards any cases where the fsParent has another SEL child
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