June 2007 - jboss-dev-forums - Jboss List Archives

[Design of Messaging on JBoss (Messaging/JBoss)] - Re: JBMESSAGING-1006 - Throwing exception when failover fail

by timfox

"clebert.suconic(a)jboss.com" wrote : | The exception was breaking failover... and messages were getting lost. (Until a restart on server) Probably because you weren't closing the session. If the recovery failed halfway then the session will still contain deliveries corresponding to the "missing" messages. The client then gets an exception and closes the session, the deliveries will then get cancelled back to the queue. If the client crashes the server side cleanup will automatically close the session. In any cas there is no need to make the recovery atomic. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4059403#4059403 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4059403

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[Design of Messaging on JBoss (Messaging/JBoss)] - Re: JBMESSAGING-1006 - Throwing exception when failover fail

by clebert.suconic＠jboss.com

anonymous wrote : Imagine if the cancel or recovery of several message failed half way. The session would eventually get closed and the remaining messages would end up back on the queue. No messages would be lost and we wouldn't have broken any of our transactional promises. This is not the behavior I saw on testcases.. The exception was breaking failover... and messages were getting lost. (Until a restart on server) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4059398#4059398 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4059398

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[Design of Messaging on JBoss (Messaging/JBoss)] - Re: JBMESSAGING-1006 - Throwing exception when failover fail

by timfox

I'll re-iterate what I said before. The only things that execute in a transactional context are sending and ack of messages. These are the only things for which we give a transactional guarantee. Cancelling and recovering don't need to be atomic. Why? Imagine if the cancel or recovery of several message failed half way. The session would eventually get closed and the remaining messages would end up back on the queue. No messages would be lost and we wouldn't have broken any of our transactional promises. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4059395#4059395 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4059395

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[Design of Messaging on JBoss (Messaging/JBoss)] - Re: JBMESSAGING-1006 - Throwing exception when failover fail

by clebert.suconic＠jboss.com

recoverTransaction does a loop... if it can't find one of the ACKs... part of the ACKs are recovered, and the client was invalidated. I'm removing recovered ACKs if one of the messages couldn't be found. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4059388#4059388 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4059388

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[Design of Messaging on JBoss (Messaging/JBoss)] - Re: JBMESSAGING-1006 - Throwing exception when failover fail

by timfox

"clebert.suconic(a)jboss.com" wrote : Just an update... | | Another point I'm dealing with on this task, is to make ServerSessionEndpoing::recoverDeliveries atomic. | | Case anything goes wrong with the execution of Queue::recoverDeliveries... ServerSessionEndpoing::recoverDeliveries needs to keep messages untouched. | It doesn't need to be atomic. The only things that need to be atomic are transactional sends and acks View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4059387#4059387 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4059387

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[Design of JBoss jBPM] - Re: Maven2 Repository

by camunda

Thanks anyway! Maybe Tom has an idea where to raise that issue inside of JBoss. It is not a jbpm related problem, the JBoss maven2 repository is very uncomplete at all... View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4059367#4059367 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4059367

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[Design of Messaging on JBoss (Messaging/JBoss)] - Re: JBMESSAGING-1006 - Throwing exception when failover fail

by clebert.suconic＠jboss.com

Just an update... Another point I'm dealing with on this task, is to make ServerSessionEndpoing::recoverDeliveries atomic. Case anything goes wrong with the execution of Queue::recoverDeliveries... ServerSessionEndpoing::recoverDeliveries needs to keep messages untouched. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4059310#4059310 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4059310

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[Design of JBoss jBPM] - Re: Maven2 Repository

by kukeltje

correct, but it is THE repository where in the release process the latest version is stored. The maven2 repo is a non-jbpm (the project) maintained repo... no idea who is responsible for this. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4059304#4059304 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4059304

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[Design of Messaging on JBoss (Messaging/JBoss)] - Re: JBMESSAGING-1006 - Throwing exception when failover fail

by clebert.suconic＠jboss.com

anonymous wrote : recovery is done on a per session level, not connection or consumer. so the session should be invalidated Right... Think about the two sessions case then? One Connection , two sessions, each one with a consumer on a different queue. If session1 can't find ACKs and session2 find ACKs, we want only session1 invalidated, right? Right now Exceptions are handled on FailoverCommandCenter... I will be adding exception handling for each Session now on SessionState.synchronizeWith. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4059294#4059294 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4059294

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[Design of Messaging on JBoss (Messaging/JBoss)] - Re: JBMESSAGING-1006 - Throwing exception when failover fail

by timfox

recovery is done on a per session level, not connection or consumer. so the session should be invalidated View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4059293#4059293 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4059293

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jboss-dev-forums June 2007