Re: [PR] [SPARK-43157][SQL] Clone InMemoryRelation cached plan to prevent cloned plan from referencing same objects [spark]

["robreeves (via GitHub)" <gi...@apache.org>]

robreeves commented on PR #40812:
URL: https://github.com/apache/spark/pull/40812#issuecomment-1973502406

   @liuzqt another idea for a narrow explain utils fix is to move the `QueryPlan.OP_ID_TAG` currently stored in the `TreeNode.tags` into a thread local map maintained in explain utils. This would keep the same state and eliminate the concurrency issue here by not using the tags.


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