[jboss-jira] [JBoss JIRA] Commented: (JBMESSAGING-908) MySQL on Linux fails to load server after failover

[Tim Fox (JIRA)]

    [ http://jira.jboss.com/jira/browse/JBMESSAGING-908?page=comments#action_12411845 ] 
            
Tim Fox commented on JBMESSAGING-908:
-------------------------------------

Just to clarify:

Please ignore any earlier comments about adding a FK.

Every time we have seen this issue it has been due to the user using a non transacted data store with JBM. JBM will only work with a transacted data store.

The most common example of this is using MySQL with the MyISAM table type which does not fully support transactions. JBM only supports MySQL when using the InnoDB or NDB storage engines.

> MySQL on Linux fails to load server after failover
> --------------------------------------------------
>
>                 Key: JBMESSAGING-908
>                 URL: http://jira.jboss.com/jira/browse/JBMESSAGING-908
>             Project: JBoss Messaging
>          Issue Type: Bug
>            Reporter: Tim Fox
>         Assigned To: Tim Fox
>             Fix For: 1.4.0.CR2
>
>
> Sometimes, after failover occurs and a server is restarted, the server start fails with:
> java.lang.IllegalStateException: Did not load correct number of messages, wanted:1 but got:0
> 	at org.jboss.messaging.core.PagingChannelSupport.processReferences(PagingChannelSupport.java:591)
> 	at org.jboss.messaging.core.PagingChannelSupport.doLoad(PagingChannelSupport.java:518)
> 	at org.jboss.messaging.core.plugin.postoffice.cluster.LocalClusteredQueue.mergeIn(LocalClusteredQueue.java:243)
> 	at org.jboss.messaging.core.plugin.postoffice.cluster.DefaultClusteredPostOffice.performFailover(DefaultClusteredPostOffice.java:2169)
> 	at org.jboss.messaging.core.plugin.postoffice.cluster.DefaultClusteredPostOffice.nodeLeft(DefaultClusteredPostOffice.java:2031)
> 	at org.jboss.messaging.core.plugin.postoffice.cluster.DefaultClusteredPostOffice.access$1800(DefaultClusteredPostOffice.java:98)
> 	at org.jboss.messaging.core.plugin.postoffice.cluster.DefaultClusteredPostOffice$HandleViewAcceptedRunnable.run(DefaultClusteredPostOffice.java:2400)
> 	at EDU.oswego.cs.dl.util.concurrent.QueuedExecutor$RunLoop.run(QueuedExecutor.java:89)
> 	at java.lang.Thread.run(Thread.java:595
> or similar.
> Analysing logs it seems this is because when the server crashed previously it did so and partially committed a transaction, i.e inserted the ref but not the message.
> My suspicion is that this is because the MySQL configuration being used is setup to use the non transaction myISAAM storage which has no transaction  support. But this needs to be verified.

-- 
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa
-
For more information on JIRA, see: http://www.atlassian.com/software/jira