[JBoss JIRA] Created: (JBMESSAGING-1245) Message delivery freezes with default values of prefetchSize and slowConsumers
1:25 a.m.
Message delivery freezes with default values of prefetchSize and slowConsumers
------------------------------------------------------------------------------
Key: JBMESSAGING-1245
URL: http://jira.jboss.com/jira/browse/JBMESSAGING-1245
Project: JBoss Messaging
Issue Type: Bug
Reporter: Tim Fox
Assigned To: Tim Fox
Fix For: 1.4.0.SP3.CP02, 1.4.1.beta2
Message delivery seems to freeze under some circumstances with default values of
prefetchSize and slowConsumers.
Increasing the prefetchSize to 1000 seems to workaround the problem.
Waiting on customer to provide instructions for replication.
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6:44 a.m.
New subject: [JBoss JIRA] Closed: (JBMESSAGING-1245) Message delivery freezes with default values of prefetchSize and slowConsumers
[ http://jira.jboss.com/jira/browse/JBMESSAGING-1245?page=all ]
Tim Fox closed JBMESSAGING-1245.
--------------------------------
Resolution: Cannot Reproduce Bug
Message delivery freezes with default values of prefetchSize and
slowConsumers
------------------------------------------------------------------------------
Key: JBMESSAGING-1245
URL: http://jira.jboss.com/jira/browse/JBMESSAGING-1245
Project: JBoss Messaging
Issue Type: Bug
Reporter: Tim Fox
Assigned To: Tim Fox
Fix For: 1.4.0.SP3.CP02, 1.4.1.beta2
Message delivery seems to freeze under some circumstances with default values of
prefetchSize and slowConsumers.
Increasing the prefetchSize to 1000 seems to workaround the problem.
Waiting on customer to provide instructions for replication.
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8:01 a.m.
New subject: [JBoss JIRA] Reopened: (JBMESSAGING-1245) Message delivery freezes with default values of prefetchSize and slowConsumers
[ http://jira.jboss.com/jira/browse/JBMESSAGING-1245?page=all ]
Tim Fox reopened JBMESSAGING-1245:
----------------------------------
Message delivery freezes with default values of prefetchSize and
slowConsumers
------------------------------------------------------------------------------
Key: JBMESSAGING-1245
URL: http://jira.jboss.com/jira/browse/JBMESSAGING-1245
Project: JBoss Messaging
Issue Type: Bug
Reporter: Tim Fox
Assigned To: Tim Fox
Fix For: 1.4.0.SP3.CP02, 1.4.1.beta2
Message delivery seems to freeze under some circumstances with default values of
prefetchSize and slowConsumers.
Increasing the prefetchSize to 1000 seems to workaround the problem.
Waiting on customer to provide instructions for replication.
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8:06 a.m.
New subject: [JBoss JIRA] Commented: (JBMESSAGING-1245) Message delivery freezes with default values of prefetchSize and slowConsumers
[ http://jira.jboss.com/jira/browse/JBMESSAGING-1245?page=comments#action_1... ]
Tim Fox commented on JBMESSAGING-1245:
--------------------------------------
By inspection of the code I believe I can potential for a race condition which could cause
the observed problem.
In ServerConsumerEndpoint::handle()
if (sendCount == num)
{
//if change rate gets set to zero here then would get stuck!! ****
clientAccepting = false;
firstTime = false;
}
If a call to changeRate() comes in at line ****, then it is possible that sendCount gets
set to zero, and clientAccepting remains false, which would cause consumers to become
stuck
Workarounds for now woud be to set prefetchSize to a very large value so that TCP flow
control takes effect - although this may not be ideal.
Proper fix is to make sure those actions are properly synchronized.
Message delivery freezes with default values of prefetchSize and
slowConsumers
------------------------------------------------------------------------------
Key: JBMESSAGING-1245
URL: http://jira.jboss.com/jira/browse/JBMESSAGING-1245
Project: JBoss Messaging
Issue Type: Bug
Reporter: Tim Fox
Assigned To: Tim Fox
Fix For: 1.4.0.SP3.CP02, 1.4.1.beta2
Message delivery seems to freeze under some circumstances with default values of
prefetchSize and slowConsumers.
Increasing the prefetchSize to 1000 seems to workaround the problem.
Waiting on customer to provide instructions for replication.
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8:10 a.m.
New subject: [JBoss JIRA] Commented: (JBMESSAGING-1245) Message delivery freezes with default values of prefetchSize and slowConsumers
[ http://jira.jboss.com/jira/browse/JBMESSAGING-1245?page=comments#action_1... ]
Tim Fox commented on JBMESSAGING-1245:
--------------------------------------
I will run through a soak and try to hit the race condition, then make the fix and soak
again for a few days to make sure it is fixed.
Message delivery freezes with default values of prefetchSize and
slowConsumers
------------------------------------------------------------------------------
Key: JBMESSAGING-1245
URL: http://jira.jboss.com/jira/browse/JBMESSAGING-1245
Project: JBoss Messaging
Issue Type: Bug
Reporter: Tim Fox
Assigned To: Tim Fox
Fix For: 1.4.0.SP3.CP02, 1.4.1.beta2
Message delivery seems to freeze under some circumstances with default values of
prefetchSize and slowConsumers.
Increasing the prefetchSize to 1000 seems to workaround the problem.
Waiting on customer to provide instructions for replication.
--
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8:12 a.m.
New subject: [JBoss JIRA] Updated: (JBMESSAGING-1245) Message delivery freezes with default values of prefetchSize and slowConsumers
[ http://jira.jboss.com/jira/browse/JBMESSAGING-1245?page=all ]
Tim Fox updated JBMESSAGING-1245:
---------------------------------
Priority: Critical (was: Major)
Message delivery freezes with default values of prefetchSize and
slowConsumers
------------------------------------------------------------------------------
Key: JBMESSAGING-1245
URL: http://jira.jboss.com/jira/browse/JBMESSAGING-1245
Project: JBoss Messaging
Issue Type: Bug
Reporter: Tim Fox
Assigned To: Tim Fox
Priority: Critical
Fix For: 1.4.0.SP3.CP02, 1.4.1.beta2
Message delivery seems to freeze under some circumstances with default values of
prefetchSize and slowConsumers.
Increasing the prefetchSize to 1000 seems to workaround the problem.
Waiting on customer to provide instructions for replication.
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2:22 a.m.
New subject: [JBoss JIRA] Commented: (JBMESSAGING-1245) Message delivery freezes with default values of prefetchSize and slowConsumers
[ http://jira.jboss.com/jira/browse/JBMESSAGING-1245?page=comments#action_1... ]
Tim Fox commented on JBMESSAGING-1245:
--------------------------------------
Progress so far:
I have created a simple test program which sends 20000 non persistent messages in a burst,
then consumes them all, and closes and creates a new consumer every 20 messages, with
prefetchSize set to 15.
With a small Thread.sleep as above this test locks up very quickly.
With the fixed code I have left it running overnight, and so far have have processed
around 25 million messages with no problems. I will leave it running further, but it looks
good so far.
Message delivery freezes with default values of prefetchSize and
slowConsumers
------------------------------------------------------------------------------
Key: JBMESSAGING-1245
URL: http://jira.jboss.com/jira/browse/JBMESSAGING-1245
Project: JBoss Messaging
Issue Type: Bug
Reporter: Tim Fox
Assigned To: Tim Fox
Priority: Critical
Fix For: 1.4.0.SP3.CP02, 1.4.1.beta2
Message delivery seems to freeze under some circumstances with default values of
prefetchSize and slowConsumers.
Increasing the prefetchSize to 1000 seems to workaround the problem.
Waiting on customer to provide instructions for replication.
--
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2:43 a.m.
New subject: [JBoss JIRA] Commented: (JBMESSAGING-1245) Message delivery freezes with default values of prefetchSize and slowConsumers
[ http://jira.jboss.com/jira/browse/JBMESSAGING-1245?page=comments#action_1... ]
Tim Fox commented on JBMESSAGING-1245:
--------------------------------------
Correction, actually it's about 80 million so far, not 25 million.
I'll run it until 250 million then call it a day..
Message delivery freezes with default values of prefetchSize and
slowConsumers
------------------------------------------------------------------------------
Key: JBMESSAGING-1245
URL: http://jira.jboss.com/jira/browse/JBMESSAGING-1245
Project: JBoss Messaging
Issue Type: Bug
Reporter: Tim Fox
Assigned To: Tim Fox
Priority: Critical
Fix For: 1.4.0.SP3.CP02, 1.4.1.beta2
Message delivery seems to freeze under some circumstances with default values of
prefetchSize and slowConsumers.
Increasing the prefetchSize to 1000 seems to workaround the problem.
Waiting on customer to provide instructions for replication.
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4:38 p.m.
New subject: [JBoss JIRA] Closed: (JBMESSAGING-1245) Message delivery freezes with default values of prefetchSize and slowConsumers
[ http://jira.jboss.com/jira/browse/JBMESSAGING-1245?page=all ]
Tim Fox closed JBMESSAGING-1245.
--------------------------------
Resolution: Done
I have soaked with several hundred million messages and now problems appeared.
Message delivery freezes with default values of prefetchSize and
slowConsumers
------------------------------------------------------------------------------
Key: JBMESSAGING-1245
URL: http://jira.jboss.com/jira/browse/JBMESSAGING-1245
Project: JBoss Messaging
Issue Type: Bug
Reporter: Tim Fox
Assigned To: Tim Fox
Priority: Critical
Fix For: 1.4.0.SP3.CP02, 1.4.1.beta2
Message delivery seems to freeze under some circumstances with default values of
prefetchSize and slowConsumers.
Increasing the prefetchSize to 1000 seems to workaround the problem.
Waiting on customer to provide instructions for replication.
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4:38 p.m.
New subject: [JBoss JIRA] Updated: (JBMESSAGING-1245) Message delivery freezes with default values of prefetchSize and slowConsumers
[ http://jira.jboss.com/jira/browse/JBMESSAGING-1245?page=all ]
Tim Fox updated JBMESSAGING-1245:
---------------------------------
Comment: was deleted
Message delivery freezes with default values of prefetchSize and
slowConsumers
------------------------------------------------------------------------------
Key: JBMESSAGING-1245
URL: http://jira.jboss.com/jira/browse/JBMESSAGING-1245
Project: JBoss Messaging
Issue Type: Bug
Reporter: Tim Fox
Assigned To: Tim Fox
Priority: Critical
Fix For: 1.4.0.SP3.CP02, 1.4.1.beta2
Message delivery seems to freeze under some circumstances with default values of
prefetchSize and slowConsumers.
Increasing the prefetchSize to 1000 seems to workaround the problem.
Waiting on customer to provide instructions for replication.
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4:38 p.m.
New subject: [JBoss JIRA] Commented: (JBMESSAGING-1245) Message delivery freezes with default values of prefetchSize and slowConsumers
[ http://jira.jboss.com/jira/browse/JBMESSAGING-1245?page=comments#action_1... ]
Tim Fox commented on JBMESSAGING-1245:
--------------------------------------
I have soaked with several hundred million messages and no problems appeared, so closing.
Message delivery freezes with default values of prefetchSize and
slowConsumers
------------------------------------------------------------------------------
Key: JBMESSAGING-1245
URL: http://jira.jboss.com/jira/browse/JBMESSAGING-1245
Project: JBoss Messaging
Issue Type: Bug
Reporter: Tim Fox
Assigned To: Tim Fox
Priority: Critical
Fix For: 1.4.0.SP3.CP02, 1.4.1.beta2
Message delivery seems to freeze under some circumstances with default values of
prefetchSize and slowConsumers.
Increasing the prefetchSize to 1000 seems to workaround the problem.
Waiting on customer to provide instructions for replication.
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6644
days inactive
6650
days old
10 comments
1 participants
participants (1)
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Tim Fox (JIRA)