[AMQ-3061] Broker Deadlock when limiting size of temp store, and using VirtualTopics

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 5.3.2, 5.4.1
• Component/s: Broker

Environment

Mac 10.6.5 (and Linux Centos)

• Assignee: Unassigned
• Reporter: Dominic Tootell
• Created: 30/Nov/10 20:39
• Updated: 10/Oct/11 15:36
• Resolved: 10/Oct/11 15:36

Description

When limiting the Temp Table space the broker will dead lock:

• 1 Producer Thread (own connection) writing to VirtualTopic.FooTwo
  • writes 40000 messages
• 2 Consumer Threads (each own connection) consuming from Consumer.X.VirtualTopic.FooTwo
  • consumes message (auto ack - but message ack for good measure - delay of 100ms between consumption)

The dead lock occurs when using the either the KahaDB or ActiveMQPersistence persistence, and seems more related to the KahaDB implementation used for the Temp storage area.

I shall attach a test jar, which is a executable jar, from which the issue can be replicated (I shall attach a zip of the source too - maven project)

The tests can be run as:

• java -classpath 5.4.1-deadlock-jar-with-dependencies.jar bbc.forge.domt.activemq.investigation.KahaDBTempStorageDeadlockReplication54Test

or

• java -classpath 5.4.1-deadlock-jar-with-dependencies.jar bbc.forge.domt.activemq.investigation.TempStorageDeadlockReplication54Test

These classes are also Unit Test Cases.

• Producer logs to producer.log
• Consumes log to consumer.log
• A Monitor thread just run in the background that detail the number of messages sent and consumed... logs to monitor.log
• tests write to the dir target/activemq-data

To disable limiting the temp storage add the System property limit.temp=false, i.e.

• java -Dlimit.temp=false -classpath 5.4.1-deadlock-jar-with-dependencies.jar bbc.forge.domt.activemq.investigation.TempStorageDeadlockReplication54Test

This seems to be a different/additional issue to AMQ-2475

thanks in advance, let me know if you need any more information.
/dom

Issue Links

• is related to: AMQ-3530 Broker (5.5) Deadlock when limiting size of temp store, and using VirtualTopics