GitHub user gnethercutt opened a pull request:
https://github.com/apache/zookeeper/pull/83
enable TCP keepalive for the leadership election/quorum socket
Use TCP keep-alives for election/quorum peer connections.
This is the shortest edit distance to address
[ZOOKEEPER-1748](https://issues.apache.org/jira/browse/ZOOKEEPER-1748), and is
required to avoid silent packet delivery failures for a long-lived connection
in AWS (amongst other environments).
See also:
- [VPC security group connection
tracking](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-network-security.html#security-group-connection-tracking)
- [Using TCP
keepalives](http://tldp.org/HOWTO/TCP-Keepalive-HOWTO/usingkeepalive.html)
- [Zookeeper
internals](https://zookeeper.apache.org/doc/r3.4.8/zookeeperInternals.html)
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/gnethercutt/zookeeper election_tcp_keepalive
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/zookeeper/pull/83.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #83
----
commit bcab41003d91dc121e368337317710c2434bece8
Author: Glenn Nethercutt <[email protected]>
Date: 2016-09-28T18:22:41Z
enable TCP keepalive for the leadership election/quorum socket
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