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From "Vikram Dixit Kumaraswamy" <vikram.di...@gmail.com>
Subject Re: Review Request 36486: HIVE-11262 Skip MapJoin processing if the join hash table is empty
Date Thu, 16 Jul 2015 18:18:02 GMT

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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/36486/#review91926
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Ship it!


Ship It!

- Vikram Dixit Kumaraswamy


On July 16, 2015, 12:45 a.m., Jason Dere wrote:
> 
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> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/36486/
> -----------------------------------------------------------
> 
> (Updated July 16, 2015, 12:45 a.m.)
> 
> 
> Review request for hive, Matt McCline, Vikram Dixit Kumaraswamy, and Wei Zheng.
> 
> 
> Bugs: HIVE-11262
>     https://issues.apache.org/jira/browse/HIVE-11262
> 
> 
> Repository: hive-git
> 
> 
> Description
> -------
> 
> - Added size() method to HashTableContainer interface/implementations.
> - After loading hashTable, check if size == 0 and if join is all inner joins. If so,
set done on the MapJoinOperator.
> 
> 
> Diffs
> -----
> 
>   ql/src/java/org/apache/hadoop/hive/ql/exec/MapJoinOperator.java 15cafdd 
>   ql/src/java/org/apache/hadoop/hive/ql/exec/persistence/HybridHashTableContainer.java
e338a31 
>   ql/src/java/org/apache/hadoop/hive/ql/exec/persistence/MapJoinBytesTableContainer.java
83a1521 
>   ql/src/java/org/apache/hadoop/hive/ql/exec/persistence/MapJoinTableContainer.java 9d8cbcb

>   ql/src/java/org/apache/hadoop/hive/ql/exec/vector/mapjoin/fast/VectorMapJoinFastHashTable.java
fbe6b4c 
>   ql/src/java/org/apache/hadoop/hive/ql/exec/vector/mapjoin/fast/VectorMapJoinFastTableContainer.java
4b1d6f6 
>   ql/src/java/org/apache/hadoop/hive/ql/exec/vector/mapjoin/hashtable/VectorMapJoinHashTable.java
7e219ec 
>   ql/src/java/org/apache/hadoop/hive/ql/exec/vector/mapjoin/optimized/VectorMapJoinOptimizedHashTable.java
a2d4e4c 
> 
> Diff: https://reviews.apache.org/r/36486/diff/
> 
> 
> Testing
> -------
> 
> 
> Thanks,
> 
> Jason Dere
> 
>


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