jin xing created SPARK-21175: -------------------------------- Summary: Slow down "open blocks" on shuffle service when memory shortage to avoid OOM. Key: SPARK-21175 URL: https://issues.apache.org/jira/browse/SPARK-21175 Project: Spark Issue Type: Improvement Components: Shuffle Affects Versions: 2.1.1 Reporter: jin xing
A shuffle service can serves blocks from multiple apps/tasks. Thus the shuffle service can suffers high memory usage when lots of {{shuffle-read}} happen at the same time. In my cluster, OOM always happens on shuffle service. Analyzing heap dump, memory cost by Netty(chunks) can be up to 2~3G. It might make sense to reject "open blocks" request when memory usage is high on shuffle service. -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org