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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/1314/
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(Updated 2011-12-07 07:01:30.547976)
Review request for hive, John Sichi and Carl Steinbach.
Changes
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Adding null keys induced confusions especially for optimizers. This patch just
modifies key-order minimizing side effects.
Summary
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If all of the distinct params are in group by keys, union column reserved for
distinct params would not be added, which making problems initializing RS
operator.
This patch is just a simple bypass adding dummy expression for the union
column. Someone would know better way to resolve the problem.
This addresses bug HIVE-2332.
https://issues.apache.org/jira/browse/HIVE-2332
Diffs (updated)
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ql/src/java/org/apache/hadoop/hive/ql/exec/ReduceSinkOperator.java 732a5aa
ql/src/java/org/apache/hadoop/hive/ql/plan/PlanUtils.java c6ae55d
ql/src/test/queries/clientpositive/groupby_distinct_samekey.q PRE-CREATION
ql/src/test/results/clientpositive/groupby_distinct_samekey.q.out
PRE-CREATION
Diff: https://reviews.apache.org/r/1314/diff
Testing
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added clientpositive/groupby_distinct_samekey.q
Thanks,
Navis
