[SPARK-33152][SQL] This PR proposes a new logic to maintain & track constraints which solves the OOM or performance issues in query compilation due to Constraint Propagation Rule#30185

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ahshahid wants to merge 11 commits intoapache:masterfrom

ahshahid:SPARK-33152

Commits on Dec 14, 2020

Changes to fix SPARK-33152
Asif Shahid
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SPARK-33152. Fixed an assertion error caused due to AttributeReference not getting conflated in a Set due to difference in their qualifier
Asif Shahid
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SPARK-33152. fixed the merge compile failure
Asif Shahid
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Fixed the scala compilation failure for 2.13. SPARK-33152
Asif Shahid
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Fixed the scala compilation failure for 2.13. SPARK-33152
Asif Shahid
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Safeguarded asserts. Handled a case of same Alias showing up in multiple projects. SPARK-33152
Asif Shahid
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SPARK-33152. Fix compilation issue in merge
Asif Shahid
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SPARK-33152. Fix scala style issue
Asif Shahid
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SPARK-33152. Fixed compilation failure due to warning
Asif Shahid
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SPARK-33152. Fixed test failure
Asif Shahid
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SPARK-33152. refcatoring
Asif Shahid
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