Laljo John Pullokkaran created HIVE-12356:
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Summary: Capture if a rule mutated the plan.
Key: HIVE-12356
URL: https://issues.apache.org/jira/browse/HIVE-12356
Project: Hive
Issue Type: Bug
Affects Versions: 1.2.0
Reporter: Laljo John Pullokkaran
Assignee: Laljo John Pullokkaran
Currently Hive Optimizer doesn't capture if a rule mutated the plan.
This info could be useful in:
1. determining if a subsequent optimization rule needs to be run or not
(Ex if Constant propagation didn't mutate plan, then don't run subsequent
PPD)
2. Explain can contain info about which optimizations are applied effectively
on the query.
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