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https://issues.apache.org/jira/browse/SPARK-29298?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16940644#comment-16940644
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Lantao Jin commented on SPARK-29298:
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cc [~dongjoon] [~cloud_fan] [~hyukjin.kwon] [~viirya]
> 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
> Priority: Major
>
> 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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