[ https://issues.apache.org/jira/browse/SPARK-20776?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Wenchen Fan resolved SPARK-20776. --------------------------------- Resolution: Fixed Fix Version/s: 2.2.0 Issue resolved by pull request 18008 [https://github.com/apache/spark/pull/18008] > Fix JobProgressListener perf. problems caused by empty TaskMetrics > initialization > --------------------------------------------------------------------------------- > > Key: SPARK-20776 > URL: https://issues.apache.org/jira/browse/SPARK-20776 > Project: Spark > Issue Type: Improvement > Components: Spark Core > Affects Versions: 2.2.0 > Reporter: Josh Rosen > Assignee: Josh Rosen > Fix For: 2.2.0 > > > In > {code} > ./bin/spark-shell --master=local[64] > {code} > I ran > {code} > sc.parallelize(1 to 100000, 100000).count() > {code} > and profiled the time spend in the LiveListenerBus event processing thread. I > discovered that the majority of the time was being spent constructing empty > TaskMetrics instances inside JobProgressListener. As I'll show in a PR, we > can slightly simplify the code to remove the need to construct one empty > TaskMetrics per onTaskSubmitted event. -- This message was sent by Atlassian JIRA (v6.3.15#6346) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org