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Posted to reviews@spark.apache.org by "summaryzb (via GitHub)" <gi...@apache.org> on 2025/06/01 02:52:08 UTC

Re: [PR] [SPARK-52024][SQL] Support cancel ShuffleQueryStage when propagate empty relations [spark]

summaryzb commented on PR #50814:
URL: https://github.com/apache/spark/pull/50814#issuecomment-2926331368

   > what if the shuffle stage is being reused by other places? I don't think we can cancel it without a ref counting to prove it's not used anywhere.
   
   Appreciate your time to review, could you help to explain more detail about 'reused by other places', currently i use `AdaptiveExecutionContext#stageReuse` to record the reuse cases, which similar to a ref counting.


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