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https://issues.apache.org/jira/browse/QPID-1488?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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michael j. goulish updated QPID-1488:
-------------------------------------
Description:
In cluster braindump (when a new member is being added to a cluster) the
QueuePolicy is not being serialized out as part of the brain dump. As a result
the newbie cluster can get a mistaken idea of the queue size (in bytes).
After many dequeues, the size can go negative, but since the queue size is an
unsigned number it wraps around and look like a large positive. Which sets off
the flow-to-disk code, because it thinks that the queue has gotten too large.
The result: what(): framing-error: Unexpected command start frame.
(qpid/SessionState.cpp:57)
This fix just adds a little serialization of the QueuePolicy on to the end of
the serialization of the Queue.
was:
In cluster braindump (when a new member is being added to a cluster) the
QueuePolicy is not being serialized out as part of the brain dump. As a result
the newbie cluster can get a mistaken idea of the queue size (in bytes).
After many dequeues, the size can go negative, but since the queue size is an
unsigned number it wraps around and look like a large positive. Which sets off
the flow-to-disk code, because it thinks that the queue has gotten too large.
This fix just adds a little serialization of the QueuePolicy on to the end of
the serialization of the Queue.
> QueuePolicy serialization fix for cluster braindump.
> ----------------------------------------------------
>
> Key: QPID-1488
> URL: https://issues.apache.org/jira/browse/QPID-1488
> Project: Qpid
> Issue Type: Improvement
> Components: C++ Broker
> Environment: tested on F9
> Reporter: michael j. goulish
> Priority: Blocker
> Attachments: queue_policy_serialization_bug.diff
>
>
> In cluster braindump (when a new member is being added to a cluster) the
> QueuePolicy is not being serialized out as part of the brain dump. As a
> result the newbie cluster can get a mistaken idea of the queue size (in
> bytes).
> After many dequeues, the size can go negative, but since the queue size is an
> unsigned number it wraps around and look like a large positive. Which sets
> off the flow-to-disk code, because it thinks that the queue has gotten too
> large.
> The result: what(): framing-error: Unexpected command start frame.
> (qpid/SessionState.cpp:57)
> This fix just adds a little serialization of the QueuePolicy on to the end of
> the serialization of the Queue.
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