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https://issues.apache.org/jira/browse/SPARK-2099?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14028681#comment-14028681
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Sandy Ryza commented on SPARK-2099:
-----------------------------------
https://github.com/apache/spark/pull/1056
> Report metrics for running tasks
> --------------------------------
>
> Key: SPARK-2099
> URL: https://issues.apache.org/jira/browse/SPARK-2099
> Project: Spark
> Issue Type: Improvement
> Affects Versions: 1.0.0
> Reporter: Sandy Ryza
>
> Spark currently collects a set of helpful task metrics, like shuffle bytes
> written, GC time, and displays them on the app web UI. These are only
> collected and displayed for tasks that have completed. This makes them
> unsuited to perhaps the situation where they would be most useful -
> determining what's going wrong in currently running tasks.
> Reporting metrics progrss for running tasks would probably require adding an
> executor->driver heartbeat that reports metrics for all tasks currently
> running on the executor.
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