cloud-fan commented on a change in pull request #24735: [SPARK-27871][SQL]
LambdaVariable should use per-query unique IDs instead of globally unique IDs
URL: https://github.com/apache/spark/pull/24735#discussion_r288846613
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala
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@@ -172,7 +172,8 @@ abstract class Optimizer(sessionCatalog: SessionCatalog)
Batch("Object Expressions Optimization", fixedPoint,
EliminateMapObjects,
CombineTypedFilters,
- ObjectSerializerPruning) :+
+ ObjectSerializerPruning,
+ ReassignLambdaVariableID) :+
Review comment:
The IDs should all be positive or negative. Let me add some checks to ensure
that.
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