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https://issues.apache.org/jira/browse/KAFKA-9893?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Cheng Tan updated KAFKA-9893:
-----------------------------
    Description: 
This issue has two parts:
 # Support transportation layer connection timeout described in KIP-601
 # Optimize the logic for NetworkClient.leastLoadedNode()

Changes:
 # Added a new common client configuration parameter 
socket.connection.setup.timeout.ms to the NetworkClient. Handle potential 
transportation layer timeout using the same approach as it handling potential 
request timeout.
 # When no connected channel exists, leastLoadedNode() will now provide a 
disconnected node that has the least number of failed attempts. 
 # ClusterConnectionStates will keep the connecting node ids. Now it also has 
several new public methods to provide per connection relavant data.

  was:
This issue has two parts:
 # Support transportation layer connection timeout described in KIP-601
 # Optimize the logic for NetworkClient.leastLoadedNode()

Changes:
 # Added a new common client configuration parameter 
socket.connection.setup.timeout.ms to the NetworkClient. Handle potential 
transportation layer timeout using the same approach as it handling potential 
request timeout.
 # When no connected channel exists, leastLoadedNode() will now provide a 
disconnected node that has the least number of failed attempts. 


> Configurable TCP connection timeout and improve the initial metadata fetch
> --------------------------------------------------------------------------
>
>                 Key: KAFKA-9893
>                 URL: https://issues.apache.org/jira/browse/KAFKA-9893
>             Project: Kafka
>          Issue Type: New Feature
>            Reporter: Cheng Tan
>            Assignee: Cheng Tan
>            Priority: Major
>
> This issue has two parts:
>  # Support transportation layer connection timeout described in KIP-601
>  # Optimize the logic for NetworkClient.leastLoadedNode()
> Changes:
>  # Added a new common client configuration parameter 
> socket.connection.setup.timeout.ms to the NetworkClient. Handle potential 
> transportation layer timeout using the same approach as it handling potential 
> request timeout.
>  # When no connected channel exists, leastLoadedNode() will now provide a 
> disconnected node that has the least number of failed attempts. 
>  # ClusterConnectionStates will keep the connecting node ids. Now it also has 
> several new public methods to provide per connection relavant data.



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