Recovery from hung queue

[r0tty <r0...@hotmail.com>]

Hi,

Can anyone help me understand what just happened and how I can take the
corrective action if it happens again?

What happened:

1.	A larger than usual batch of messages was released to a queue
2.	The queue became unresponsive (could not browse through the web
front-end)
3.	The rest of ActiveMQ was fine - all other queues were operational and
could be browsed
4.	Tried purging and then deleting the hung queue
5.	All the other queues became unresponsive
6.	Restarted AMQ
7.	Everything returned to normal and was fine

Between steps 3 and 4 it was noted that temp percent used was 133.  It was
also noted that files were present in localhost/tmp_storage (db-2.log, lock,
tmpDB.data, tmpDB.redo).

Ideally I would like to know what corrective action I could have taken that
would have repaired the queue that originally hung without causing problems
for other queues.

Thanks in advance to anyone who can assist.

Regards,
Rotty





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Re: Recovery from hung queue

[Tim Bain <tb...@alumni.duke.edu>]

One suggestion for corrective action is to upgrade to a version of ActiveMQ
that's not five years old.....

On Aug 5, 2016 8:56 AM, "r0tty" <r0...@hotmail.com> wrote:

> Hi,
>
> Sorry for the delay replying.
>
> Unfortunately we dodn't take a thread dump.
>
> We're on version 5.5.1.
>
> David
>
>
>
> --
> View this message in context: http://activemq.2283324.n4.
> nabble.com/Recovery-from-hung-queue-tp4714964p4715089.html
> Sent from the ActiveMQ - User mailing list archive at Nabble.com.
>

Re: Recovery from hung queue

[r0tty <r0...@hotmail.com>]

Hi,

Sorry for the delay replying.

Unfortunately we dodn't take a thread dump.

We're on version 5.5.1.

David



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Re: Recovery from hung queue

[Christopher Shannon <ch...@gmail.com>]

Did you save a thread dump? The thread dump would be the best way to know
for sure why everything was unresponsive because it would tell you what
each thread is waiting on.  Also, what version are you using?

On Tue, Aug 2, 2016 at 6:05 AM, r0tty <r0...@hotmail.com> wrote:

> Hi,
>
> Can anyone help me understand what just happened and how I can take the
> corrective action if it happens again?
>
> What happened:
>
> 1.      A larger than usual batch of messages was released to a queue
> 2.      The queue became unresponsive (could not browse through the web
> front-end)
> 3.      The rest of ActiveMQ was fine - all other queues were operational
> and
> could be browsed
> 4.      Tried purging and then deleting the hung queue
> 5.      All the other queues became unresponsive
> 6.      Restarted AMQ
> 7.      Everything returned to normal and was fine
>
> Between steps 3 and 4 it was noted that temp percent used was 133.  It was
> also noted that files were present in localhost/tmp_storage (db-2.log,
> lock,
> tmpDB.data, tmpDB.redo).
>
> Ideally I would like to know what corrective action I could have taken that
> would have repaired the queue that originally hung without causing problems
> for other queues.
>
> Thanks in advance to anyone who can assist.
>
> Regards,
> Rotty
>
>
>
>
>
> --
> View this message in context:
> http://activemq.2283324.n4.nabble.com/Recovery-from-hung-queue-tp4714964.html
> Sent from the ActiveMQ - User mailing list archive at Nabble.com.
>