Flavio Paiva Junqueira commented on ZOOKEEPER-690:

FLE relies upon a correct implementation of the voting view. My understanding 
is that if an observer is being elected leader, then the following predicate is 
evaluating to false:


This is line 201 of FastLeaderElection.java. If this predicate is true, meaning 
that an observer is not in the voting view of a server, then the server will 
send a response right away and won't consider the vote of the observer. Does it 
make sense?

> AsyncTestHammer test fails on hudson.
> -------------------------------------
>                 Key: ZOOKEEPER-690
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-690
>             Project: Zookeeper
>          Issue Type: Bug
>            Reporter: Mahadev konar
>            Assignee: Henry Robinson
>            Priority: Blocker
>             Fix For: 3.3.1, 3.4.0
>         Attachments: jstack-201004201053.txt, nohup-201004201053.txt, 
> TEST-org.apache.zookeeper.test.AsyncHammerTest.txt, zoo.log
> the hudson test failed on 
> http://hudson.zones.apache.org/hudson/job/Zookeeper-Patch-h1.grid.sp2.yahoo.net/2/testReport/.
>  There are huge set of cancelledkeyexceptions in the logs. Still going 
> through the logs to find out the reason for failure.

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