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https://issues.apache.org/jira/browse/SPARK-29298?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wenchen Fan resolved SPARK-29298.
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Fix Version/s: 3.0.0
Resolution: Fixed
Issue resolved by pull request 25971
[https://github.com/apache/spark/pull/25971]
> Separate block manager heartbeat endpoint from driver endpoint
> --------------------------------------------------------------
>
> Key: SPARK-29298
> URL: https://issues.apache.org/jira/browse/SPARK-29298
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core
> Affects Versions: 3.0.0
> Reporter: Lantao Jin
> Assignee: Lantao Jin
> Priority: Major
> Fix For: 3.0.0
>
>
> Executor's heartbeat will send synchronously to BlockManagerMaster to let it
> know that the block manager is still alive. In a heavy cluster, it will
> timeout and cause block manager re-register unexpected.
> This improvement will separate a heartbeat endpoint from the driver endpoint.
> In our production environment, this is really helpful to prevent executors
> from unstable up and down.
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