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Posted to issues@spark.apache.org by "Xiao Li (JIRA)" <ji...@apache.org> on 2019/03/13 05:37:00 UTC
[jira] [Commented] (SPARK-25449) Don't send zero accumulators in
heartbeats
[ https://issues.apache.org/jira/browse/SPARK-25449?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16791321#comment-16791321 ]
Xiao Li commented on SPARK-25449:
---------------------------------
This changed the unit of conf.
> Don't send zero accumulators in heartbeats
> ------------------------------------------
>
> Key: SPARK-25449
> URL: https://issues.apache.org/jira/browse/SPARK-25449
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core
> Affects Versions: 2.4.0
> Reporter: Mukul Murthy
> Assignee: Mukul Murthy
> Priority: Major
> Labels: release-notes
> Fix For: 3.0.0
>
>
> Heartbeats sent from executors to the driver every 10 seconds contain metrics and are generally on the order of a few KBs. However, for large jobs with lots of tasks, heartbeats can be on the order of tens of MBs, causing tasks to die with heartbeat failures. We can mitigate this by not sending zero metrics to the driver.
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