Optimizer rule should be able to specify to optimizer framework about how many
times it should be invoked
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Key: PIG-2350
URL: https://issues.apache.org/jira/browse/PIG-2350
Project: Pig
Issue Type: New Feature
Reporter: Ashutosh Chauhan
Currently framework keep invoking rule until it says false. There are few rules
(which actually aren't optimization) which needs to be applied exactly once. As
a workaround these rules keep a boolean which they set to true first time they
are called and then check it later. We should get rid of such hacks.
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