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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2020/10/27 06:41:57 UTC

[GitHub] [spark] HeartSaVioR edited a comment on pull request #30139: [SPARK-31069][CORE] high cpu caused by chunksBeingTransferred in external shuffle service

HeartSaVioR edited a comment on pull request #30139:
URL: https://github.com/apache/spark/pull/30139#issuecomment-717022097


   Sorry but your latest change doesn't actually lock properly. Long is immutable, and you always replace the object when you do the calculation and assign to the field, which is used as a lock. Your best try would be changing it to long, and have a separate Object field as locking purpose.


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