ChenMichael edited a comment on pull request #34684:
URL: https://github.com/apache/spark/pull/34684#issuecomment-976849576


   In order for this problem to manifest, we have to do join planning between 
the time a InMemoryRelation is converted to an rdd and the time where the job 
executing this rdd completes. In AQE, since it repeatedly does replanning, this 
can happen when the InMemoryRelations are on different levels. I guess this 
could happen with AQE off if there are concurrent jobs sharing the same 
InMemoryRelation as well.


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