Github user maoling commented on the issue:
https://github.com/apache/zookeeper/pull/247
@ALL
if `getElectionAddress` method doesn't need a lock,then the deadlock will
be fixed by the light of nature.
but lots of methods in the `QuorumPeer` `synchronized (QV_LOCK)` which
cause other potential deadlocks.
I am wathching the logic in the `ZOOKEEPER-2080` to find a better way to
process with `QV_LOCK` lock
BTW:find a
[blog](http://www.javacreed.com/what-is-deadlock-and-how-to-prevent-it/) which
provides us some innovative way to prevent the deadlock.
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