Couldnt find documentation for ColumnMapKeyPrune optimization rule
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Key: PIG-2221
URL: https://issues.apache.org/jira/browse/PIG-2221
Project: Pig
Issue Type: Bug
Components: documentation
Affects Versions: 0.8.1
Reporter: Vivek Padmanabhan
There are no documentations for some of the Optimization Rules,
For ex; ColumnMapKeyPrune
in http://pig.apache.org/docs/r0.8.1/piglatin_ref1.html#Optimization+Rules
And moreover I believe the documentaion should be saying how to disable these
rules using -t option.
It would be nice if the documentation could talk of some uses cases where it
makes sense to disable the optimization rule.
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