Jie Huang created ZOOKEEPER-3682:
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Summary: 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
Fix For: 3.6.0
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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