viirya opened a new pull request #23562: [SPARK-26619][SQL] Prune the unused serializers from SerializeFromObject URL: https://github.com/apache/spark/pull/23562 ## What changes were proposed in this pull request? `SerializeFromObject` now keeps all serializer expressions for domain object even when only part of output attributes are used by top plan. We should be able to prune unused serializers from `SerializeFromObject` in such case. ## How was this patch tested? Added tests.
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