Fail to start neo4j server in HA setup

[tomaadland]

I followed the instructions in https://github.com/andreasronge/neo4j/wiki/Neo4j%3A%3Aha-cluster to setup the neo4j as a HA cluster in order to use the neo4j server admin as described.

The Rails server and console works fine, starts two servers that communicates with each other. When I start the neo4j server it seems to have some trouble communicating with the other servers in the setup. From the Rails server log I get these errors:

2013-04-16 20:53:02.575+0000 ERROR [o.n.c.c.NetworkInstance]: Receive exception:
java.io.InvalidClassException: failed to read class descriptor
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1564) ~[na:1.6.0_43]
......

This happens when running neo4j-enterprise-1.9.RC1

When I try neo4j-enterprise-2.0.0-M01 I get:

2013-04-16 20:42:11.062+0000 ERROR [o.n.c.c.NetworkInstance]: Receive exception:
java.io.InvalidObjectException: enum constant performRoleElections does not exist in class org.neo4j.cluster.protocol.election.ElectionMessage
at java.io.ObjectInputStream.readEnum(ObjectInputStream.java:1701) ~[na:1.6.0_43]
....

I get this same error message when trying neo4j-enterprise-1.9-SNAPSHOT

I can't seem to get my hands on neo4j-enterprise-1.9.M03 so have not been able to try that one.

I was using JRuby 1.7.3 on Mac OS X 10.8.3

Any suggestions would be greatly appreciated.

[andreasronge]

Hi

Ok, hopefully I will get some time next week to have a look at it.

On Tue, Apr 16, 2013 at 11:05 PM, Tom Henrik Aadland <
[email protected]> wrote:

I followed the instructions in
https://github.com/andreasronge/neo4j/wiki/Neo4j%3A%3Aha-cluster to setup
the neo4j as a HA cluster in order to use the neo4j server admin as
described.

The Rails server and console works fine, starts two servers that
communicates with each other. When I start the neo4j server it seems to
have some trouble communicating with the other servers in the setup. From
the Rails server log I get these errors:

2013-04-16 20:53:02.575+0000 ERROR [o.n.c.c.NetworkInstance]: Receive
exception:
java.io.InvalidClassException: failed to read class descriptor
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1564)
~[na:1.6.0_43]
......

This happens when running neo4j-enterprise-1.9.RC1

When I try neo4j-enterprise-2.0.0-M01 I get:

2013-04-16 20:42:11.062+0000 ERROR [o.n.c.c.NetworkInstance]: Receive
exception:
java.io.InvalidObjectException: enum constant performRoleElections does
not exist in class org.neo4j.cluster.protocol.election.ElectionMessage
at java.io.ObjectInputStream.readEnum(ObjectInputStream.java:1701)
~[na:1.6.0_43]
....

I get this same error message when trying neo4j-enterprise-1.9-SNAPSHOT

I can't seem to get my hands on neo4j-enterprise-1.9.M03 so have not been
able to try that one.

I was using JRuby 1.7.3 on Mac OS X 10.8.3

Any suggestions would be greatly appreciated.

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/252
.

[tomaadland]

Would be great. Let me know if and how I can help in resolving this.

[andreasronge]

Just ping me again if I forget to fix it

On Wed, Apr 17, 2013 at 6:37 PM, Tom Henrik Aadland <
[email protected]> wrote:

Would be great. Let me know if and how I can help in resolving this.

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/252#issuecomment-16517218
.

[ruprict]

So, I have just hit this error, and it looks like it's due to version issues. In my case, I have a standalone Neo4j instance that I want to be the master, then have Rails app and Rails console connect as slaves only.

I get the failed to read class descriptor error when the slaves attempt to start up. The standalone neo4j is using 1.9.RC2, and we are using the 1.9.M03 gem.

Any ideas? How can we easily get both on the same 1.9?

[andreasronge]

Yes, we are aware of the problem. We will try to get Neo4j.rb working with HA Neo4j 1.9, see #258
As soon as I get Neo4j 1.9 working in a Neo4j.rb HA cluster I will release 1.9 jars.
Btw, everything else seems to work with the 1.9 jars, even a simple HA example: https://github.com/andreasronge/neo4j/tree/master/example/ha-cluster (strange)

[tomaadland]

How far are we from a release with 1.9 jars ?

[ruprict]

It was releases today! See the message about 2.3.0 on the Google group. https://groups.google.com/forum/m/#!topic/neo4jrb/zaYHU4a0JZ4

[tomaadland]

awesome will upgrade right away :)

[saterus]

2.3.0 was released with new jars. Closing.