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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/4651/
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(Updated June 18, 2012, 5:22 p.m.)
Review request for pig and Julien Le Dem.
Changes
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This is not as radical a change as it would appear, as we had been discussing
it a bit on github while it was down. Still, this is a much refactored version
of the code, and with some nascent testing!
Description
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This work builds on Dmitriy's PrimitiveTuple work. The idea is that, knowing
the Schema on the frontend, we can code generate Tuples which can be used for
fun and profit. In rudimentary tests, the memory efficiency is 2-4x better, and
it's ~15% smaller serialized (heavily heavily depends on the data, though).
Need to do get/set tests, but assuming that it's on par (or even faster) than
Tuple, the memory gain is huge.
Need to clean up the code and add tests.
Right now, it generates a SchemaTuple for every inputSchema and outputSchema
given to UDF's. The next step is to make a SchemaBag, where I think the
serialization savings will be really huge.
Needs tests and comments, but I want the code to settle a bit.
This addresses bug PIG-2632.
https://issues.apache.org/jira/browse/PIG-2632
Diffs (updated)
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trunk/src/org/apache/pig/backend/hadoop/executionengine/mapReduceLayer/JobControlCompiler.java
1351417
trunk/src/org/apache/pig/backend/hadoop/executionengine/mapReduceLayer/PigGenericMapBase.java
1351417
trunk/src/org/apache/pig/backend/hadoop/executionengine/mapReduceLayer/PigGenericMapReduce.java
1351417
trunk/src/org/apache/pig/backend/hadoop/executionengine/mapReduceLayer/PigTupleDefaultRawComparator.java
1351417
trunk/src/org/apache/pig/backend/hadoop/executionengine/physicalLayer/PhysicalOperator.java
1351417
trunk/src/org/apache/pig/backend/hadoop/executionengine/physicalLayer/expressionOperators/POUserFunc.java
1351417
trunk/src/org/apache/pig/data/BinInterSedes.java 1351417
trunk/src/org/apache/pig/data/DataByteArray.java 1351417
trunk/src/org/apache/pig/data/TupleFactory.java 1351417
trunk/src/org/apache/pig/data/TypeAwareTuple.java 1351417
trunk/src/org/apache/pig/impl/PigContext.java 1351417
trunk/src/org/apache/pig/impl/io/NullableTuple.java 1351417
trunk/src/org/apache/pig/impl/io/PigNullableWritable.java 1351417
trunk/src/org/apache/pig/newplan/logical/expression/ExpToPhyTranslationVisitor.java
1351417
trunk/src/org/apache/pig/newplan/logical/expression/UserFuncExpression.java
1351417
trunk/test/org/apache/pig/test/TestDataBag.java 1351417
trunk/test/org/apache/pig/test/TestSchema.java 1351417
Diff: https://reviews.apache.org/r/4651/diff/
Testing
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Thanks,
Jonathan Coveney
