Zhongwei Zhu created SPARK-40778:
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Summary: Make HeartbeatReceiver as an IsolatedRpcEndpoint
Key: SPARK-40778
URL: https://issues.apache.org/jira/browse/SPARK-40778
Project: Spark
Issue Type: Improvement
Components: Spark Core
Affects Versions: 3.3.0
Reporter: Zhongwei Zhu
All RpcEndpoint including HeartbeatReceiver in driver are sharing one thread
pool. When there're lots of rpc messages queued, the waiting process time of
heartbeat time could easily exceed heartbeat timeout. Make HeartbeatReceiver
extends IsolatedRcpEndpoint then it has dedicated single thread to process
heartbeat
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