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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2020/03/17 06:59:46 UTC

[GitHub] [spark] jiangxb1987 commented on issue #27871: [SPARK-31105][CORE]Respect sql execution id for FIFO scheduling mode

jiangxb1987 commented on issue #27871: [SPARK-31105][CORE]Respect sql execution id for FIFO scheduling mode
URL: https://github.com/apache/spark/pull/27871#issuecomment-599909004
 
 
   IIUC Spark didn't optimize the workload toward the direction that the query delayed time should be minimized. Actually, I think scheduling Stages from the same sql execution would lead to a few nodes with the shuffle output files become very hot, thus lead to worse performance for the whole cluster compared to current approach. 

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