[GitHub] [spark] dongjoon-hyun commented on pull request #40690: [SPARK-43043][CORE] Improve the performance of MapOutputTracker.updateMapOutput

["dongjoon-hyun (via GitHub)" <gi...@apache.org>]

dongjoon-hyun commented on PR #40690:
URL: https://github.com/apache/spark/pull/40690#issuecomment-1533324077

   Since this is `Performance` PR, could you contribute a micro-benchmark which is similar to your case?
   > This happens on a benchmark job generating a large number of very tiny blocks. When the job is finished, the cluster tries to shutdown the idle executors and migrate all the blocks to other active executors, the driver acts like hanging, then resumed after a while.
   
   


-- 
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.

To unsubscribe, e-mail: reviews-unsubscribe@spark.apache.org

For queries about this service, please contact Infrastructure at:
users@infra.apache.org


---------------------------------------------------------------------
To unsubscribe, e-mail: reviews-unsubscribe@spark.apache.org
For additional commands, e-mail: reviews-help@spark.apache.org