Pierre Yin created ZOOKEEPER-3712:
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Summary: Add setKeepAlive support for NIOServerCnxn
Key: ZOOKEEPER-3712
URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3712
Project: ZooKeeper
Issue Type: New Feature
Components: server
Affects Versions: 3.5.6, 3.4.14, 3.6.0
Reporter: Pierre Yin
Suggest to add setKeepAlive support for NIOServerCnxn. It can resolve some tcp
connection leak issue caused by network broken. In some occasional case(network
switcher broken, network card broken, iptables firewall strategy and so
on....), zookeeper server would lose the FIN packet when the client close the
connection. In such scenario, the connection will be treated as alive forever
and never be closed.
These leaked tcp connections introduce the resource leak risk.
setKeepAlive for every client NIO connection can prevent the resource leak risk.
I will send the patch later. Hope someone can help to review it.
Thanks.
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