L7 (application layer) ping support
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Key: ZOOKEEPER-920
URL: https://issues.apache.org/jira/browse/ZOOKEEPER-920
Project: Zookeeper
Issue Type: New Feature
Components: c client
Affects Versions: 3.3.1
Reporter: Chang Song
Priority: Minor
Zookeeper is used in applications where fault tolerance is important. Its
client i/o thread send/recv heartbeats to/fro Zookeeper ensemble to stay
connected. However healthy heartbeat does not always means that the application
that uses Zookeeper client is in good health, it only means that ZK client
thread is in good health.
This I needed something that can tagged onto Zookeeper ping that represents L7
(application) health as well.
I have modified C client source to support this in minimal way. I am new to
Zookeeper, so please code review this code. I am actually using this code in
our in-house solution.
https://github.com/tru64ufs/zookeeper/commit/2196d6d5114a2fd2c0a3bc9a55f4494d47d2aece
Thank you very much.
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