[ARTEMIS-3526] Messages get stuck in delivering status on a queue.

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Not A Bug
• Affects Version/s: 2.18.0
• Component/s: Broker
• Assignee: Unassigned
• Reporter: Jelmer
• Created: 13/Oct/21 07:23
• Updated: 13/Oct/21 17:08
• Resolved: 13/Oct/21 17:01

Description

It seems that not "well behaved" consumers can cause messages to get stuck in a delivering-status on a queue. It seems like the following can occur (sample code follows):

1) Create a xa-connection/xa-session to an Artemis broker

2) Create a consumer on a queue on this Broker.

3) Start the "xa-transaction"

4) Consume a message

5) End the "xa-transaction"

6) Initiate a "xa-prepare" for the two-phase commit

7) DO NOT initiate a "xa-commit" (the consumer is not wel behaved or gets killed half way through the process etc.).

 

In code (partial and based on the  XAReceiveExample from the Artemis-samples):

try (final XAConnection xaconnection = createXAConnection(xacf);
    final XASession xaSession = createXASession(xaconnection)) {

   final MessageConsumer consumer = xaSession.createConsumer(queue);

   final Xid xid = createXid();
   final XAResource xaRes = xaSession.getXAResource();

   xaRes.start(xid, XAResource.TMNOFLAGS);

   final Message message = consumer.receive(2000);
   System.out.println("MESSAGE CONSUMED [" + message.getJMSMessageID() + "]");

   xaRes.end(xid, XAResource.TMSUCCESS);
   xaRes.prepare(xid);
   //xaRes.commit(xid, false);

   System.out.println("MESSAGE SORT OF COMMITTED [" + message.getJMSMessageID() + "]");
} 

 

After this the message seems to be stuck on the queue because it is still being delivered to a consumer which is already gone. They show up in the queue metrics but the actual message/content cannot be seen, queried, consumed etc. We can see them using "artemis data exp" however.

 

We have the following questions:

1) Is there a way to get these messages out of this state, i..e. route them to an expiry-queue after 24 hours or manualy ?

2) Is there (apart from "artemis data exp") a way to see the content ?