Re: [jgroups-dev] Random behavior - Not finding peers

Hi Bela Ban,

We found two issues:

1) jgroups-2.6.15.GA.jar has runtime issue: For class "org.jgroups.Address":
bad class file: /.m2/repository/jgroups/jgroups/
2.6.15.GA/jgroups-2.6.15.GA.jar(org/jgroups/Address.class)
class file has wrong version 50.0, should be 49.0

2) We tried with 2.6.14GA version, still able to reproduce the issue 1 out
of 3 times.

High level information:
The project has multiple unix boxes (For simplicity - consider 2 boxes),
where java services run.
These services are stateful, in terms of only one JVM (out of 2 boxes) will
process client requests. While JVM on otherbox is running and takeover only
on first instance not available, detecting through "Jgroup" event.
During maitainance cycle, second instance which should start as "Ready" due
to first instance already started, does not able to detect peer.
Please, *refer attached image *for graphical information.

Note: This is random  behavior but 1 out of 3 times, we see this issue. High
level suspect is, when logs has warning from *
ConnectionTable.Connection.Receiver*, we get "initial_mbrs are [] "
Restart of faulty instance is the work around for now.

Any idea might help us.

Thanks in advance,
Kamal.

On Wed, Oct 27, 2010 at 12:17 PM, Bela Ban <[email protected]> wrote:

> 2.6.7 is very old, can you upgrade to the latest 2.6.x release (2.6.15) ?
>
> Once you've done that, if it happens again, I'd need a reproduceable
> scenario where this happens
>
>
> Dalal wrote:
>
>> JGroup version: 2.6.7 GA
>> On startup does not able to find initial members in the cluster, with same
>> group name.
>> If restart the JVM it finds on second try. The JVM contains multiple
>> Groups
>> around 10 or so. But happens only to one group and its random to which
>> one.
>> Any idea ?
>>
>>
>
> --
> Bela Ban
> Lead JGroups / Clustering Team
> JBoss
>
>

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