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https://issues.apache.org/jira/browse/SPARK-3428?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14243909#comment-14243909
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Apache Spark commented on SPARK-3428:
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User 'sryza' has created a pull request for this issue:
https://github.com/apache/spark/pull/3684
> TaskMetrics for running tasks is missing GC time metrics
> --------------------------------------------------------
>
> Key: SPARK-3428
> URL: https://issues.apache.org/jira/browse/SPARK-3428
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core
> Affects Versions: 1.1.0
> Reporter: Andrew Ash
> Assignee: Sandy Ryza
>
> SPARK-2099 added the ability to update helpful metrics like shuffle bytes
> read/written on the webui via a periodic heartbeat from executors. It
> omitted GC time metrics though.
> This ticket is for including GC times in the heartbeats.
> See the updateAggregateMetrics method here:
> https://github.com/apache/spark/pull/1056/files#diff-1f32bcb61f51133bd0959a4177a066a5R175
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