Akihiro Matsukawa created PIG-3497:
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Summary: JobControlCompiler should only do reducer estimation when
the job has a reduce phase
Key: PIG-3497
URL: https://issues.apache.org/jira/browse/PIG-3497
Project: Pig
Issue Type: Bug
Reporter: Akihiro Matsukawa
Priority: Minor
Currently, JobControlCompiler makes an estimation for the number of reducers
required (by default based on input size into mappers) regardless of whether
there is a reduce phase in the job. This is unnecessary, especially when
running more complex custom reducer estimators.
Change to only estimate reducers when necessary.
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