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https://issues.apache.org/jira/browse/ZOOKEEPER-3682?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Fangmin Lv resolved ZOOKEEPER-3682.
-----------------------------------
Resolution: Fixed
Issue resolved by pull request 1210
[https://github.com/apache/zookeeper/pull/1210]
> Stop initializing new SSL connection if ZK server is shutting down
> ------------------------------------------------------------------
>
> Key: ZOOKEEPER-3682
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3682
> Project: ZooKeeper
> Issue Type: Improvement
> Components: server
> Reporter: Jie Huang
> Priority: Minor
> Labels: pull-request-available
> Fix For: 3.7.0
>
> Time Spent: 50m
> Remaining Estimate: 0h
>
> ZK keeps accepting new connections while it's being shut down then
> immediately close them when it finds out that the ZK server is not running.
> It's not a big deal before SSL is enabled since creating TCP connections is
> relatively cheap.
>
> With SSL being widely enabled, creating SSL connections involves handshake
> that takes non-trivial CPU time, which is wasted since the connections are
> closed right after.
>
> This JIRA is going to stop initializing TLS handshake if the zkServer is not
> serving to save resources.
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