[GitHub] [spark] LantaoJin edited a comment on issue #26711: [SPARK-30069][CORE][YARN] Clean up non-shuffle disk block manager files following executor exists on YARN

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LantaoJin edited a comment on issue #26711: [SPARK-30069][CORE][YARN] Clean up non-shuffle disk block manager files following executor exists on YARN
URL: https://github.com/apache/spark/pull/26711#issuecomment-560966867
 
 
   > This is actually writing temp shuffle files into YARN container local dirs instead of local dirs? Could there be any performance difference after this PR? (Sorry I'm not familiar with YARN)
   
   Yes. I think only this part could have performance difference in YARN mode:
   https://github.com/apache/spark/pull/26711/files#diff-b25a153e05a044779df448f024c3a3afR125
   But this part already had potentially performance problem. See
   https://github.com/apache/spark/blob/4021354b73dd86ee765f50ff90ab777edfc21bdb/core/src/main/scala/org/apache/spark/storage/BlockManagerMaster.scala#L215

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