Hi Peter,

Yes, this helped indeed, it works perfect. Thanks!

Do you have any advices about how to keep the slave as up to date as possible 
with the master? I mean I need as often updates to the slaves as possible 
without impacting too much masters' performance.

Thanks,
George

-----Original Message-----
From: [email protected] [mailto:[email protected]] On 
Behalf Of Peter Neubauer
Sent: 29 July 2010 08:47
To: Neo4j user discussions
Subject: Re: [Neo4j] Unable to build a master-slave system

George,
I think you should switch to neo4j-kernel 1.1-SNAPSHOT and online-backup 
0.6-SNAPSHOT. You can find an example test at 
https://svn.neo4j.org/components/online-backup/trunk/src/test/java/org/neo4j/onlinebackup/MultiRunningTest.java
, backing up a master database to a backup in another directory (you can to a 
number of them of course)

Does that help?

Cheers,

/peter neubauer

COO and Sales, Neo Technology

GTalk:      neubauer.peter
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http://www.neo4j.org               - Your high performance graph database.
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On Wed, Jul 28, 2010 at 4:55 PM, George Ciubotaru <[email protected]> 
wrote:
> Hello,
>
> I'm trying to build a high availability system with neo4j as explained here: 
> http://wiki.neo4j.org/content/Online_Backup_HA. In theory everything looks 
> pretty simple and straightforward... but once I try to run the slave process 
> I'm getting the following exception:
>
> Throwing away org.neo4j.onlinebackup.net.connecttomaster...@1f1fba0
> java.nio.channels.NotYetConnectedException
>      at sun.nio.ch.SocketChannelImpl.ensureWriteOpen(Unknown Source)
>      at sun.nio.ch.SocketChannelImpl.write(Unknown Source)
>      at 
> org.neo4j.onlinebackup.net.Connection.write(Connection.java:238)
>      at 
> org.neo4j.onlinebackup.net.ConnectToMasterJob.sendGreeting(ConnectToMa
> sterJob.java:55)
>      at 
> org.neo4j.onlinebackup.net.ConnectToMasterJob.performJob(ConnectToMast
> erJob.java:141)
>      at org.neo4j.onlinebackup.net.JobEater.run(JobEater.java:32)
>
> ... followed by this exception on master side:
>
> Connection closed Connection[slave_ip_address:11587]
> org.neo4j.onlinebackup.net.SocketException: 
> Connection[slave_ip_address:11587] error reading Throwing away 
> org.neo4j.onlinebackup.net.handleincommingslave...@fd13b5
>      at 
> org.neo4j.onlinebackup.net.Connection.read(Connection.java:210)
>      at 
> org.neo4j.onlinebackup.net.HandleIncommingSlaveJob.getGreeting(HandleI
> ncommingSlaveJob.java:41)
>      at 
> org.neo4j.onlinebackup.net.HandleIncommingSlaveJob.performJob(HandleIn
> commingSlaveJob.java:160)
>      at org.neo4j.onlinebackup.net.JobEater.run(JobEater.java:93)
> Caused by: java.nio.channels.ClosedChannelException
>      at sun.nio.ch.SocketChannelImpl.ensureReadOpen(Unknown Source)
>      at sun.nio.ch.SocketChannelImpl.read(Unknown Source)
>      at 
> org.neo4j.onlinebackup.net.Connection.read(Connection.java:205)
>      ... 3 more
> null chain job
>
> Any idea of what might be wrong here? (I'm running everything on 
> 64-bit Windows (7 or Server 2008 R2), neo4j-kernel 1.0 and 
> online-backup 0.5)
>
> Thank you,
> George
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