Kbase P21234: SonicMQ: When does the Broker switch from one Log-File to the other Log-File?
| Autor |
Progress Software Corporation - Progress |
| Acesso |
Público |
| Publicação |
15/10/2008 |
|
Status: Unverified
GOAL:
When does the Broker switch from one Log-File to the other Log-File?
FACT(s) (Environment):
SonicMQ 4.x
FIX:
When one of the recovery log files is full, the broker
switches to the other log file. At this point, it performs a
"syncpoint." This means that the broker writes out all the
information about its current state (undelivered persistent messages,
transactions, subscriptions, users, etc.) to the log. This
information could potentially require disk space equivalent to the
sum of max queue sizes for all queues including system queues (for a
worst case scenario in which all queues have filled up and there are
no connected receivers), plus additional space to accommodate the rest
of the information necessary to restore the current state of the
broker.