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dde2b71850
The waitIndex was being pulled from the wrong node in the lock parent which caused the watch to be returned immediately. This caused a continuous set of calls while a client was waiting for a lock.
Etcd modules
etcd modules (mods) are higher order pieces of functionality that only
speak to the client etcd API and are presented in the /mod HTTP path
of the etcd service.
The basic idea is that etcd can ship things like dashboards, master election APIs and other helpful services that would normally have to stand up and talk to an etcd cluster directly in the binary. It is a convienence and hopefully eases complexity in deployments.