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Logical Log Error (HA CLuster)
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Langland  
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 More options May 2 2012, 8:44 pm
From: Langland <ericlangl...@msn.com>
Date: Wed, 2 May 2012 17:44:54 -0700 (PDT)
Local: Wed, May 2 2012 8:44 pm
Subject: Logical Log Error (HA CLuster)
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This is the error I get when I try to fire up the Neo4J server. I get
it after I try to move a new database onto the server from naother
developer.

I realize that the data/coordinator/version-2 files need to be cleared
between restarts. Anre there any other things I need to do?

2012-05-03 00:42:13.262+0000: Error in ZooClient.process txId:10 not
found in any logical log (starting at 0 and searching backwards
java.lang.RuntimeException: txId:10 not found in any logical log
(starting at 0 and searching backwards
        at
org.neo4j.kernel.impl.transaction.xaframework.LogExtractor.findLogContainin gTxId(LogExtractor.java:
310)
        at
org.neo4j.kernel.impl.transaction.xaframework.LogExtractor.<init>(LogExtrac tor.java:
143)
        at
org.neo4j.kernel.impl.transaction.xaframework.LogExtractor.from(LogExtracto r.java:
591)
        at
org.neo4j.kernel.ha.zookeeper.ZooClient.getFirstMasterForTx(ZooClient.java:
648)
        at
org.neo4j.kernel.ha.zookeeper.ZooClient.makeSureRootPathIsFound(ZooClient.j ava:
394)
        at org.neo4j.kernel.ha.zookeeper.ZooClient.getRoot(ZooClient.java:
320)
        at
org.neo4j.kernel.ha.zookeeper.AbstractZooKeeperManager.getAllMachines(Abstr actZooKeeperManager.java:
271)
        at
org.neo4j.kernel.ha.zookeeper.AbstractZooKeeperManager.getMasterFromZooKeep er(AbstractZooKeeperManager.java:
173)
        at
org.neo4j.kernel.ha.zookeeper.AbstractZooKeeperManager.getMasterFromZooKeep er(AbstractZooKeeperManager.java:
163)
        at org.neo4j.kernel.ha.zookeeper.ZooClient
$WatcherImpl.process(ZooClient.java:764)
        at org.apache.zookeeper.ClientCnxn
$EventThread.processEvent(ClientCnxn.java:530)
        at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:
506)


 
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Peter Neubauer  
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 More options May 3 2012, 1:51 am
From: Peter Neubauer <neubauer.pe...@gmail.com>
Date: Thu, 3 May 2012 07:51:58 +0200
Local: Thurs, May 3 2012 1:51 am
Subject: Re: [Neo4j] Logical Log Error (HA CLuster)
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Have you got the logical logs around, and did the db shut down cleanly?
Also, did anything happen ob the cluster while you moved the store? Could
you share your store in some way with us?
On May 3, 2012 2:45 AM, "Langland" <ericlangl...@msn.com> wrote:


 
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Mattias Persson  
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 More options May 3 2012, 3:13 am
From: Mattias Persson <matt...@neotechnology.com>
Date: Thu, 3 May 2012 09:13:33 +0200
Local: Thurs, May 3 2012 3:13 am
Subject: Re: [Neo4j] Logical Log Error (HA CLuster)
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Your messages.log file is probably enough and contains non-sensitive
information to help a guy like me debug what happened. So if you could
supply it it would be great.

Nonetheless here is what I think has happened: The database you copied from
another place was created with a batch inserter or with "keep_logical_logs"
not enabled, meaning that there are some information about the last
transaction(s) missing that an HA cluster would like to use. This is a
known issue and will be fixed pretty soon. A workaround would be:

* Remove all slave databases
* Start up your master database with e.g. new EmbeddedGraphDatabase(
"my/db/folder", MapUtil.stringMap( "keep_logical_logs", "true" ) );
* Do a little transaction, for example just create a node
* Shut down cleanly
* Start up master database in HA mode and then the slaves

Which version are you running btw?

2012/5/3 Langland <ericlangl...@msn.com>

--
Mattias Persson, [matt...@neotechnology.com]
Hacker, Neo Technology
www.neotechnology.com

 
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Langland  
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 More options May 3 2012, 7:04 pm
From: Langland <ericlangl...@msn.com>
Date: Thu, 3 May 2012 16:04:25 -0700 (PDT)
Local: Thurs, May 3 2012 7:04 pm
Subject: Re: Logical Log Error (HA CLuster)
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We're using enterprise. When you say remove the slave databases, do
you mean shut down the coordinators or physically remove their neo4j
files?

Thanks for your help here.

On May 3, 12:13 am, Mattias Persson <matt...@neotechnology.com> wrote:


 
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Mattias Persson  
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 More options May 5 2012, 5:54 am
From: Mattias Persson <matt...@neotechnology.com>
Date: Sat, 5 May 2012 11:54:12 +0200
Local: Sat, May 5 2012 5:54 am
Subject: Re: [Neo4j] Re: Logical Log Error (HA CLuster)
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You don't need to shut down the coordinators, just remove/move the
data/graph.db directory and it will be copied automatically from the master
when they start again.

2012/5/4 Langland <ericlangl...@msn.com>

--
Mattias Persson, [matt...@neotechnology.com]
Hacker, Neo Technology
www.neotechnology.com

 
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