cloud-fan commented on issue #24735: [SPARK-27871][SQL] LambdaVariable should use per-query unique IDs instead of globally unique IDs URL: https://github.com/apache/spark/pull/24735#issuecomment-497159430 > BTW, there are a few change related to resolvedEnc that don't seem directly related to the topic of lambda variables. Actually they are related. When using `ExpressionEncoder` directly, I added special logic to apply the new rule. Then I found out that I need to re-apply this special logic in `Dataset` twice. So I go ahead and refactor this part a bit, so that `Dataset` uses `ExpressionEncoder` directly.
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