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From "Harish Butani" <rhbut...@gmail.com>
Subject Re: Review Request 25179: HIVE-7905: CBO: more cost model changes
Date Wed, 03 Sep 2014 23:19:38 GMT

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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/25179/
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(Updated Sept. 3, 2014, 11:19 p.m.)


Review request for hive, Gunther Hagleitner, John Pullokkaran, and Mostafa Mokhtar.


Changes
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have added the changes
- to check range against rowCounts. This depends on HIVE-7915, which has not being merged
into CBO branch
- apply ndv scaling, where applicable
- log the detailsof PK - FK relationship


Repository: hive-git


Description
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CBO: more cost model changes


Diffs (updated)
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  ql/src/java/org/apache/hadoop/hive/ql/optimizer/optiq/HiveDefaultRelMetadataProvider.java
2c08772 
  ql/src/java/org/apache/hadoop/hive/ql/optimizer/optiq/stats/HiveRelMdRowCount.java PRE-CREATION

  ql/src/java/org/apache/hadoop/hive/ql/optimizer/optiq/stats/HiveRelMdSelectivity.java df70de2

  ql/src/java/org/apache/hadoop/hive/ql/optimizer/optiq/stats/HiveRelMdUniqueKeys.java PRE-CREATION

  ql/src/java/org/apache/hadoop/hive/ql/parse/SemanticAnalyzer.java 8fe8b3c 

Diff: https://reviews.apache.org/r/25179/diff/


Testing
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existing tests.


Thanks,

Harish Butani


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