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https://issues.apache.org/jira/browse/ZOOKEEPER-1987?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14072622#comment-14072622
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Patrick Hunt commented on ZOOKEEPER-1987:
-----------------------------------------

I turned on trace logging and here's what I see on the leader:

{noformat}
2014-07-23 17:20:14,789 [myid:1] - INFO  
[QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:35549:Leader@1243] - Have quorum of 
supporters, sids: [ [1, 3] ]; starting up and setting last processed zxid: 
0x600000000
2014-07-23 17:20:14,789 [myid:1] - DEBUG 
[QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:35549:QuorumPeer@1330] - 1 
setQuorumVerifier called with known or old config 4294967296. Current version: 
4294967296
2014-07-23 17:20:14,809 [myid:1] - DEBUG 
[LearnerHandler-/127.0.0.1:50288:LearnerHandler@467] - Received NEWLEADER-ACK 
message from 2
2014-07-23 17:20:14,810 [myid:1] - INFO  
[QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:35549:CommitProcessor@253] - Configuring 
CommitProcessor with 4 worker threads.
2014-07-23 17:20:14,826 [myid:1] - DEBUG 
[LearnerHandler-/127.0.0.1:50288:LearnerHandler@488] - Sending UPTODATE message 
to 2
2014-07-23 17:20:14,826 [myid:1] - DEBUG 
[LearnerHandler-/127.0.0.1:50289:LearnerHandler@488] - Sending UPTODATE message 
to 3
2014-07-23 17:20:14,834 [myid:1] - TRACE 
[LearnerHandler-/127.0.0.1:50289:Leader@785] - Ack zxid: 0x600000000
2014-07-23 17:20:14,834 [myid:1] - TRACE 
[LearnerHandler-/127.0.0.1:50289:Leader@791] - outstanding proposals all
2014-07-23 17:20:14,837 [myid:1] - TRACE 
[LearnerHandler-/127.0.0.1:50288:Leader@785] - Ack zxid: 0x600000000
2014-07-23 17:20:14,837 [myid:1] - TRACE 
[LearnerHandler-/127.0.0.1:50288:Leader@791] - outstanding proposals all
{noformat}


> unable to restart 3 node cluster
> --------------------------------
>
>                 Key: ZOOKEEPER-1987
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1987
>             Project: ZooKeeper
>          Issue Type: Bug
>          Components: server
>    Affects Versions: 3.5.0
>            Reporter: Patrick Hunt
>            Priority: Blocker
>             Fix For: 3.5.0
>
>         Attachments: test3.tar.gz
>
>
> I tried a fairly simple test, start a three node cluster, bring it down, then 
> restart it. On restart the servers elect the leader and send updates, however 
> the negotiation never completes - the client ports are never bound for 
> example.



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