Shixiong Zhu created SPARK-12328:
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Summary: Add connectionEstablished callback to RpcHandler to
monitor the new connections
Key: SPARK-12328
URL: https://issues.apache.org/jira/browse/SPARK-12328
Project: Spark
Issue Type: Improvement
Components: Spark Core
Affects Versions: 1.6.0
Reporter: Shixiong Zhu
Assignee: Shixiong Zhu
`NettyRpcHandler` uses a `ConcurrentHashMap` clients to remember if has
received any messages from a client to avoid firing multiple
`RemoteProcessConnected`.
We can add a callback in the RpcHandler to remove the ConcurrentHashMap from
NettyRpcHandler.
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