Lantao Jin created SPARK-29298:
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Summary: 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
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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