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Marcelo Vanzin commented on SPARK-12328:
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SPARK-11097?
> 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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