Neo4j Error

[Maykel Farha]

Hello,

I am running Neo4j Server 1.6.1 Community version, on Centos 6.2

It is on a virtual machine, which was turned off without turning off Neo4j properly, when i restarted the machine, i got an error saying

"Bad level value for property: org.neo4j.server.level"

and the server would not start, then i deleted the files and started again with a fresh installation but i am still getting the same error. But now the server does start.

Does the server write files outside the installation folder?

Is there a Linux version where Neo works best?

In case the server is not shutdown properly or the graph has an error starting up is there a way to repair the database files?

Thanks in advance!

[Maykel Farha]

This happened to me again! can anybody help please...

Thank you!

[Peter Neubauer]

Maykel,
are you seeing this in the logs? In that case, could you make the
whole things available somewhere like Dropbox or so, so we can have a
look?

Cheers,

/peter neubauer

G:  neubauer.peter
S:  peter.neubauer
P:  +46 704 106975
L:   http://www.linkedin.com/in/neubauer
T:   @peterneubauer

Neo4j 1.6 released                 - dzone.com/6S4K
The Neo4j Heroku Challenge   - http://neo4j-challenge.herokuapp.com/

[Maykel Farha]

when the server shuts down unexpectedly it happens, Neo4j won't start it just prints

[root@dyn098 bin]# ./neo4j start

Starting Neo4j Server...Bad level value for property: org.neo4j.server.level

[root@dyn098 bin]# 

in the log:

Feb 27, 2012 10:21:20 AM org.neo4j.server.logging.Logger log

SEVERE: 

Throwable occurred: java.lang.IllegalArgumentException

at sun.nio.ch.FileChannelImpl.position(FileChannelImpl.java:278)

at org.neo4j.kernel.impl.storemigration.CurrentDatabase.storeFilesAtCurrentVersion(CurrentDatabase.java:75)

at org.neo4j.server.storemigration.PreStartupStoreUpgrader.run(PreStartupStoreUpgrader.java:79)

at org.neo4j.server.storemigration.PreStartupStoreUpgrader.main(PreStartupStoreUpgrader.java:52)

this is a zip of the server -> http://dl.dropbox.com/u/59024372/neo4j-community-1.6.1-err.zip

Thank you!

On Monday, February 27, 2012 10:17:37 AM UTC-6, Peter Neubauer wrote:

Maykel,
are you seeing this in the logs? In that case, could you make the
whole things available somewhere like Dropbox or so, so we can have a
look?

Cheers,

/peter neubauer

G:  neubauer.peter
S:  peter.neubauer
P:  +46 704 106975
L:   http://www.linkedin.com/in/neubauer
T:   @peterneubauer

Neo4j 1.6 released                 - dzone.com/6S4K
The Neo4j Heroku Challenge   - http://neo4j-challenge.herokuapp.com/

[Dan M]

This happened again!

We can't figure out how to restore it, we are using CentOS 6.2

On Monday, February 27, 2012 10:17:37 AM UTC-6, Peter Neubauer wrote:

Maykel,
are you seeing this in the logs? In that case, could you make the
whole things available somewhere like Dropbox or so, so we can have a
look?

Cheers,

/peter neubauer

G:  neubauer.peter
S:  peter.neubauer
P:  +46 704 106975
L:   http://www.linkedin.com/in/neubauer
T:   @peterneubauer

Neo4j 1.6 released                 - dzone.com/6S4K
The Neo4j Heroku Challenge   - http://neo4j-challenge.herokuapp.com/

[Peter Neubauer]

OK,
Is it possible to zip up the thing and get me access to it or repeat it with test data?

Send from a device with crappy keyboard and autocorrection.

/peter

[Peter Neubauer]

Daniel,
this looks like a bug. Could you please file it?

Cheers,

/peter neubauer

G:  neubauer.peter
S:  peter.neubauer
P:  +46 704 106975
L:   http://www.linkedin.com/in/neubauer
T:   @peterneubauer

Neo4j 1.6 released                 - dzone.com/6S4K
The Neo4j Heroku Challenge   - http://neo4j-challenge.herokuapp.com/

[Peter Neubauer]

So,
there are two issues here. One was a bug in the store upgrader resulting in the

"Bad level value for property: org.neo4j.server.level"

which is fixed now in master by Alistair Jones.

The other one is the installation on CentOS not being tested and
supported in QA by us. Could you please download the latest
1.7-SNAPSHOT and check for this to be fixed? As for CentOS. If there
are problems, it would be great if you could describe what we need to
do to fix installation there.

Cheers,

/peter neubauer

G:  neubauer.peter
S:  peter.neubauer
P:  +46 704 106975
L:   http://www.linkedin.com/in/neubauer
T:   @peterneubauer

Neo4j 1.6 released                 - dzone.com/6S4K
The Neo4j Heroku Challenge   - http://neo4j-challenge.herokuapp.com/

[Maykel Farha]

Hi,

I tested the 1.7-SNAPSHOT on CentOS 6.2

The installation is still failing with the same error:

it is missing the "update-rc.d" command, which is only available on Debian but not on ReadHat/CentOS here is a link with more on that:

http://www.cyberciti.biz/faq/rhel5-update-rcd-command/ 

After the failed installation (this a new VM there are no previous installations) if i try to run neo, i get the upgrader exception.

After that i tried a fresh installation by only running neo it ran ok but i am still getting the "Bad level value for property: org.neo4j.server.level"

Thank you!

On Friday, March 2, 2012 4:06:41 AM UTC-6, Peter Neubauer wrote:

So,
there are two issues here. One was a bug in the store upgrader resulting in the

"Bad level value for property: org.neo4j.server.level"

which is fixed now in master by Alistair Jones.

The other one is the installation on CentOS not being tested and
supported in QA by us. Could you please download the latest
1.7-SNAPSHOT and check for this to be fixed? As for CentOS. If there
are problems, it would be great if you could describe what we need to
do to fix installation there.

Cheers,

/peter neubauer

G:  neubauer.peter
S:  peter.neubauer
P:  +46 704 106975
L:   http://www.linkedin.com/in/neubauer
T:   @peterneubauer

Neo4j 1.6 released                 - dzone.com/6S4K
The Neo4j Heroku Challenge   - http://neo4j-challenge.herokuapp.com/

On Wed, Feb 29, 2012 at 4:18 PM, Peter Neubauer

[Peter Neubauer]

Maykel,

it seems that the builds you download are old, we need to fix the deployment of the snapshots. Sorry for the inconvenience, will report back when it is fixed.

Cheers,

/peter neubauer

G:  neubauer.peter
S:  peter.neubauer
P:  +46 704 106975
L:   http://www.linkedin.com/in/neubauer
T:   @peterneubauer

Neo4j 1.6 released                 - dzone.com/6S4K
The Neo4j Heroku Challenge   - http://neo4j-challenge.herokuapp.com/

[Maykel Farha]

ok thank you!

we changed from CentOS to Debian 6 meanwhile. 

the installer works fine, and the service too! :)

even if the server is powered off on restart Neo4j starts on its own as it should do.

It would be very nice for it to work this way on RedHat/CentOS these are important enterprise servers that a lot of people use.

On Friday, March 2, 2012 12:10:27 PM UTC-6, Peter Neubauer wrote:

Maykel,

it seems that the builds you download are old, we need to fix the deployment of the snapshots. Sorry for the inconvenience, will report back when it is fixed.

Cheers,

/peter neubauer

G:  neubauer.peter
S:  peter.neubauer
P:  +46 704 106975
L:   http://www.linkedin.com/in/neubauer
T:   @peterneubauer

Neo4j 1.6 released                 - dzone.com/6S4K
The Neo4j Heroku Challenge   - http://neo4j-challenge.herokuapp.com/

[Peter Neubauer]

I agree with you,
It's a matter of bandwidth though. If you get the scripts working on CentOS, could you send us a diff? Also, might be best to build a RPM for RH?

Send from a device with crappy keyboard and autocorrection.

/peter

[Maykel Farha]

I am not an expert on that subject, i would have to do some research on it 

if i get a little free time i will.

i really appreciate all your work, love Neo and specially the SpringDataNeo4j makes it really easy for spring/java developers :)

thanks

On Saturday, March 3, 2012 12:14:02 AM UTC-6, Peter Neubauer wrote:

I agree with you,
It's a matter of bandwidth though. If you get the scripts working on CentOS, could you send us a diff? Also, might be best to build a RPM for RH?

Send from a device with crappy keyboard and autocorrection.

/peter

[Peter Neubauer]

Thanks Maykel,

also see the thread at https://groups.google.com/forum/?fromgroups#!topic/neo4j/1kini_GmVf8 for more hints.

Cheers,

/peter neubauer

G:  neubauer.peter
S:  peter.neubauer
P:  +46 704 106975
L:   http://www.linkedin.com/in/neubauer
T:   @peterneubauer

Neo4j 1.6 released                 - dzone.com/6S4K
The Neo4j Heroku Challenge   - http://neo4j-challenge.herokuapp.com/