rmcyang commented on pull request #34461:
URL: https://github.com/apache/spark/pull/34461#issuecomment-965824279


   Ok this makes sense to me - current behavior indeed seems not a very 
efficient way to handle the scenario of stage retry when the parent stage is 
determinate and the parent stage has merge data, which should not be ignored by 
that condition.   
   
   Given SPARK-37023 is designated to fix the enableBatchFetch assertion 
failure bug for current behavior, shall we file another spark jira and 
implement the improvement there? @Ngone51 @mridulm @Victsm @zhouyejoe @otterc 
@venkata91


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