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Message-ID: <4ACF4809.7050601@yahoo-inc.com>
Date: Fri, 09 Oct 2009 07:26:17 -0700
From: Benjamin Reed <breed@yahoo-inc.com>
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To: "zookeeper-user@hadoop.apache.org" <zookeeper-user@hadoop.apache.org>
Subject: Re: Struggling with a simple configuration file.
References: <C6F40A16.346F9%lcuff@valueclick.com>
In-Reply-To: <C6F40A16.346F9%lcuff@valueclick.com>
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right at the beginning of 
http://hadoop.apache.org/zookeeper/docs/r3.2.1/zookeeperStarted.html it 
shows you the minimum standalone configuration.

that doesn't explain the 0 id. i'd like to try an reproduce it. do you 
have an empty data directory with a single file, myid, set to 1?

ben

Leonard Cuff wrote:
> I�ve been developing for ZooKeeper for a couple months now, recently running
> in a test configuration with 3 ZooKeeper servers. I�m running 3.2.1 with no
> problems. Recently I tried to move to a single server configuration for the
> development team environment, but couldn�t get the configuration to work. I
> get the error java.lang.RuntimeException: My id 0 not in the peer list
>
> This would seem to imply that the myid file is set to zero. But ...it�s set
> to 1. 
>
> What�s puzzling to me is my original configuration of servers was this:
>
> server.1=ind104.an.dev.fastclick.net:2182:2183   <--- The machine I�m trying
> to run standalone on.
> server.2=build101.an.dev.fastclick.net:2182:2183
> server.3=cmedia101.an.dev.fastclick.net:2182:2183
>
> I just removed the last two lines, and ran zkServer.sh start.  It fails with
> the described log message. (Full log given below).
> When I put the server.2 and server.3 lines back in, it works fine, and is
> following the build101 machine.
>
> I decided to try changing the server.1 to server.0, also changed the myid
> file contents from 1 to zero.  I get a very different error scenario: A
> continuously-occurring Null Pointer exception:
>
> 2009-10-09 04:22:36,284 - WARN  [QuorumPeer:/0.0.0.0:2181:QuorumPeer@490] -
> Unexpected exception
> java.lang.NullPointerException
>         at 
> org.apache.zookeeper.server.quorum.FastLeaderElection.totalOrderPredicate(Fa
> stLeaderElection.java:466)
>         at 
> org.apache.zookeeper.server.quorum.FastLeaderElection.lookForLeader(FastLead
> erElection.java:635)
>         at 
> org.apache.zookeeper.server.quorum.QuorumPeer.run(QuorumPeer.java:488)
>
> I�m at a loss to know where I�ve gone astray.
>
> Thanks in advance for any and all help.
>
> Leonard
>
> --- the first log
>
> 2009-10-09 04:08:58,769 - INFO  [main:QuorumPeerConfig@80] - Reading
> configuration from:
> /vcm/home/sandbox/ticket_161758-1/vcm/component/zookeeper/conf/zoo.cfg.dev
> 2009-10-09 04:08:58,795 - INFO  [main:QuorumPeerMain@118] - Starting quorum
> peer
> 2009-10-09 04:08:58,845 - FATAL [main:QuorumPeerMain@86] - Unexpected
> exception, exiting abnormally
> java.lang.RuntimeException: My id 0 not in the peer list
>     at 
> org.apache.zookeeper.server.quorum.QuorumPeer.startLeaderElection(QuorumPeer
> .java:333)
>     at 
> org.apache.zookeeper.server.quorum.QuorumPeer.start(QuorumPeer.java:314)
>     at 
> org.apache.zookeeper.server.quorum.QuorumPeerMain.runFromConfig(QuorumPeerMa
> in.java:137)
>     at 
> org.apache.zookeeper.server.quorum.QuorumPeerMain.initializeAndRun(QuorumPee
> rMain.java:102)
>     at 
> org.apache.zookeeper.server.quorum.QuorumPeerMain.main(QuorumPeerMain.java:7
> 5)
>
> -- the second log
>
> 2009-10-09 04:22:36,284 - WARN  [QuorumPeer:/0.0.0.0:2181:QuorumPeer@490] -
> Unexpected exception
> java.lang.NullPointerException
>         at 
> org.apache.zookeeper.server.quorum.FastLeaderElection.totalOrderPredicate(Fa
> stLeaderElection.java:466)
>         at 
> org.apache.zookeeper.server.quorum.FastLeaderElection.lookForLeader(FastLead
> erElection.java:635)
>         at 
> org.apache.zookeeper.server.quorum.QuorumPeer.run(QuorumPeer.java:488)
> 2009-10-09 04:22:36,285 - INFO  [QuorumPeer:/0.0.0.0:2181:QuorumPeer@487] -
> LOOKING
> 2009-10-09 04:22:36,285 - INFO
> [QuorumPeer:/0.0.0.0:2181:FastLeaderElection@579] - New election: 12
> 2009-10-09 04:22:36,285 - INFO
> [QuorumPeer:/0.0.0.0:2181:FastLeaderElection@618] - Notification: 0, 12,
> 43050, 0, LOOKING, LOOKING, 0
> 2009-10-09 04:22:36,285 - WARN  [QuorumPeer:/0.0.0.0:2181:QuorumPeer@490] -
> Unexpected exception
> java.lang.NullPointerException
>         at 
> org.apache.zookeeper.server.quorum.FastLeaderElection.totalOrderPredicate(Fa
> stLeaderElection.java:466)
>         at 
> org.apache.zookeeper.server.quorum.FastLeaderElection.lookForLeader(FastLead
> erElection.java:635)
>         at 
> org.apache.zookeeper.server.quorum.QuorumPeer.run(QuorumPeer.java:488)
> 2009-10-09 04:22:36,286 - INFO  [QuorumPeer:/0.0.0.0:2181:QuorumPeer@487] -
> LOOKING
> 2009-10-09 04:22:36,286 - INFO
> [QuorumPeer:/0.0.0.0:2181:FastLeaderElection@579] - New election: 12
> 2009-10-09 04:22:36,286 - INFO
> [QuorumPeer:/0.0.0.0:2181:FastLeaderElection@618] - Notification: 0, 12,
> 43051, 0, LOOKING, LOOKING, 0
> 2009-10-09 04:22:36,286 - WARN  [QuorumPeer:/0.0.0.0:2181:QuorumPeer@490] -
> Unexpected exception
> java.lang.NullPointerException
>         at 
> org.apache.zookeeper.server.quorum.FastLeaderElection.totalOrderPredicate(Fa
> stLeaderElection.java:466)
>         at 
> org.apache.zookeeper.server.quorum.FastLeaderElection.lookForLeader(FastLead
> erElection.java:635)
>         at 
> org.apache.zookeeper.server.quorum.QuorumPeer.run(QuorumPeer.java:488)
> 2009-10-09 04:22:36,286 - INFO  [QuorumPeer:/0.0.0.0:2181:QuorumPeer@487] -
> LOOKING
> 2009-10-09 04:22:36,287 - INFO
> [QuorumPeer:/0.0.0.0:2181:FastLeaderElection@579] - New election: 12
> 2009-10-09 04:22:36,287 - INFO
> [QuorumPeer:/0.0.0.0:2181:FastLeaderElection@618] - Notification: 0, 12,
> 43052, 0, LOOKING, LOOKING, 0
> 2009-10-09 04:22:36,287 - WARN  [QuorumPeer:/0.0.0.0:2181:QuorumPeer@490] -
> Unexpected exception
> java.lang.NullPointerException
>         at 
> org.apache.zookeeper.server.quorum.FastLeaderElection.totalOrderPredicate(Fa
> stLeaderElection.java:466)
>         at 
> org.apache.zookeeper.server.quorum.FastLeaderElection.lookForLeader(FastLead
> erElection.java:635)
>         at 
> org.apache.zookeeper.server.quorum.QuorumPeer.run(QuorumPeer.java:488)
> 2009-10-09 04:22:36,287 - INFO  [QuorumPeer:/0.0.0.0:2181:QuorumPeer@487] -
> LOOKING
> 2009-10-09 04:22:36,287 - INFO
> [QuorumPeer:/0.0.0.0:2181:FastLeaderElection@579] - New election: 12
> 2009-10-09 04:22:36,287 - INFO
> [QuorumPeer:/0.0.0.0:2181:FastLeaderElection@618] - Notification: 0, 12,
> 43053, 0, LOOKING, LOOKING, 0
> 2009-10-09 04:22:36,288 - WARN  [QuorumPeer:/0.0.0.0:2181:QuorumPeer@490] -
> Unexpected exception
> ja
>