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https://reviews.apache.org/r/22752/
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Review request for hive and Ashutosh Chauhan.
Bugs: HIVE-7063
https://issues.apache.org/jira/browse/HIVE-7063
Repository: hive-git
Description
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It is common to rank within a Group/Partition and then only return the Top N
entries within each Group.
With Streaming mode for Windowing, we should push the post filter on the rank
into the Windowing processing as a Limit expression.
Diffs
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ql/src/java/org/apache/hadoop/hive/ql/exec/PTFTopNHash.java PRE-CREATION
ql/src/java/org/apache/hadoop/hive/ql/exec/ReduceSinkOperator.java 03a64e8
ql/src/java/org/apache/hadoop/hive/ql/exec/TopNHash.java bc81467
ql/src/java/org/apache/hadoop/hive/ql/exec/vector/VectorReduceSinkOperator.java
11024da
ql/src/java/org/apache/hadoop/hive/ql/plan/ReduceSinkDesc.java 8c1d336
ql/src/java/org/apache/hadoop/hive/ql/plan/ptf/WindowTableFunctionDef.java
c547e62
ql/src/java/org/apache/hadoop/hive/ql/ppd/OpProcFactory.java 7aaf455
ql/src/java/org/apache/hadoop/hive/ql/udf/ptf/WindowingTableFunction.java
2290766
ql/src/test/queries/clientpositive/windowing_streaming.q PRE-CREATION
ql/src/test/results/clientpositive/windowing_streaming.q.out PRE-CREATION
Diff: https://reviews.apache.org/r/22752/diff/
Testing
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added new .q tests
Thanks,
Harish Butani
