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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/13059/
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(Updated Oct. 3, 2013, 2:20 p.m.)
Review request for hive, Eric Hanson and Jitendra Pandey.
Bugs: HIVE-4850
https://issues.apache.org/jira/browse/HIVE-4850
Repository: hive-git
Description (updated)
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This is a working implementation based on current trunk. It is simpler than the
.1 patch in as it delegates the JOIN entirely to the row-mode MapJoinOperator.
The vectorized operator is literally calling the row-mode implementaiton for
each row in the input batch and collects the row-mode forward into the output
batch. This is not as bad as it seems because the JOIN operators has to resort
to row-mode operations anyway, due to the small tables (hashtables) being
row-mode (objects and object-inspectors). By delegating the entire join logic
to the row mode we piggyback on the correctness of exiting implementation. I do
plan to come up with a full-vectorized mode implementation but that would
require changes to the hash table creation-serialization. Note that the
filtering and key evaluation of the big table does use vectorized operators.
the row mode applies only to the key HT lookup and to the JOIN logic
Diffs
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ql/src/java/org/apache/hadoop/hive/ql/exec/CommonJoinOperator.java d320b47
ql/src/java/org/apache/hadoop/hive/ql/exec/JoinOperator.java 86db044
ql/src/java/org/apache/hadoop/hive/ql/exec/MapJoinOperator.java 153b8ea
ql/src/java/org/apache/hadoop/hive/ql/exec/OperatorFactory.java 8ab5395
ql/src/java/org/apache/hadoop/hive/ql/exec/SMBMapJoinOperator.java cde1a59
ql/src/java/org/apache/hadoop/hive/ql/exec/vector/ColumnVector.java 8b4c615
ql/src/java/org/apache/hadoop/hive/ql/exec/vector/VectorColumnAssign.java
PRE-CREATION
ql/src/java/org/apache/hadoop/hive/ql/exec/vector/VectorColumnAssignFactory.java
PRE-CREATION
ql/src/java/org/apache/hadoop/hive/ql/exec/vector/VectorHashKeyWrapperBatch.java
9955d09
ql/src/java/org/apache/hadoop/hive/ql/exec/vector/VectorMapJoinOperator.java
PRE-CREATION
ql/src/java/org/apache/hadoop/hive/ql/exec/vector/VectorReduceSinkOperator.java
6df3551
ql/src/java/org/apache/hadoop/hive/ql/exec/vector/VectorizationContext.java
02ebe14
ql/src/java/org/apache/hadoop/hive/ql/exec/vector/VectorizedRowBatch.java
ff13f89
ql/src/java/org/apache/hadoop/hive/ql/exec/vector/expressions/VectorExpressionWriterFactory.java
9e189c9
ql/src/java/org/apache/hadoop/hive/ql/optimizer/physical/Vectorizer.java
df1c5a6
ql/src/java/org/apache/hadoop/hive/ql/plan/MapWork.java a72ec8b
Diff: https://reviews.apache.org/r/13059/diff/
Testing
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Manually run some join queries on alltypes_orc table.
Thanks,
Remus Rusanu
