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From "pengcheng xiong" <pxi...@hortonworks.com>
Subject Re: Review Request 27713: CBO: enable groupBy index
Date Fri, 14 Nov 2014 04:42:41 GMT

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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/27713/
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(Updated Nov. 14, 2014, 4:42 a.m.)


Review request for hive and Sergey Shelukhin.


Repository: hive-git


Description
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Right now, even when groupby index is build, CBO is not able to use it. In this patch, we
are trying to make it use groupby index that we build. The basic problem is that 
for SEL1-SEL2-GRY-...-SEL3,
the previous version only modify SEL2, which immediately precedes GRY.
Now, with CBO, we have lots of SELs, e.g., SEL1.
So, the solution is to modify all of them.


Diffs (updated)
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  ql/src/java/org/apache/hadoop/hive/ql/optimizer/index/RewriteCanApplyProcFactory.java 02216de

  ql/src/java/org/apache/hadoop/hive/ql/optimizer/index/RewriteGBUsingIndex.java 0f06ec9 
  ql/src/java/org/apache/hadoop/hive/ql/optimizer/index/RewriteQueryUsingAggregateIndex.java
74614f3 
  ql/src/java/org/apache/hadoop/hive/ql/optimizer/index/RewriteQueryUsingAggregateIndexCtx.java
d699308 

Diff: https://reviews.apache.org/r/27713/diff/


Testing
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Thanks,

pengcheng xiong


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