Details
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Bug
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Status: Open
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Major
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Resolution: Unresolved
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None
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None
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None
Description
With patch for 3984 we removed the check during translation if windowing processing can be done at the end of a PTF chain.
Should do this check as an Optimization. If plan is:
PTFOp -> RS -> Extract -> PTFOp
and partitioning are compatible (ie same or only different in order) plan can be rewritten.
Attachments
Issue Links
- is required by
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HIVE-896 Add LEAD/LAG/FIRST/LAST analytical windowing functions to Hive.
- Closed