FD leak when network unreachable
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Key: ZOOKEEPER-1174
URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1174
Project: ZooKeeper
Issue Type: Bug
Components: java client
Affects Versions: 3.3.3
Reporter: Ted Dunning
Assignee: Ted Dunning
Priority: Critical
Fix For: 3.3.4
In the socket connection logic there are several errors that result in bad
behavior. The basic problem is that a socket is registered with a selector
unconditionally when there are nuances that should be dealt with. First, the
socket may connect immediately. Secondly, the connect may throw an exception.
In either of these two cases, I don't think that the socket should be
registered.
I will attach a test case that demonstrates the problem. I have been unable to
create a unit test that exhibits the problem because I would have to mock the
low level socket libraries to do so. It would still be good to do so if
somebody can figure out a good way.
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