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From Gordon Sim <g...@redhat.com>
Subject Re: flow-to-disk limit-policy not working?
Date Mon, 13 Jun 2011 13:16:57 GMT
On 06/09/2011 02:00 PM, Pavel Moravec wrote:
> Hello all,
> I am playing with --limit-policy flow-to-disk option when creating qpid queues but it
seems that the option is not applied when it should.
>
> My steps:
> $ service qpidd restart
> $ qpid-config add queue my-queue --limit-policy=flow-to-disk --max-queue-count=90
> $ qpid-config queues
> Queue Name Attributes
> ==================================================
> my-queue --max-queue-count=90 --limit-policy=flow-to-disk
> ..
> $ # ok, queue created with the desired parameters.
> $ # Let use standard C++ spout program to send there 100 messages
> $ ./spout -c 100 my-queue
> 2011-06-09 14:53:08 warning Exception received from broker: resource-limit-exceeded:
resource-limit-exceeded: resource-limit-exceeded: Policy exceeded on my-queue, policy: size:
max=104857600, current=0; count: max=90, current=90; type=reject (qpid/broker/QueuePolicy.cpp:87)
[caused by 93 \x00:\x00]
> 2011-06-09 14:53:08 warning Exception received from broker: resource-limit-exceeded:
resource-limit-exceeded: resource-limit-exceeded: Policy exceeded on my-queue, policy: size:
max=104857600, current=0; count: max=90, current=90; type=reject (qpid/broker/QueuePolicy.cpp:87)
[caused by 1 \x00:\x00]
> Failed to connect (reconnect disabled)
> $
>
> I.e. when sending>90 messages without reading any one, qpid rejects the messages coming
over limit. Despite --limit-policy settings.
>
> I have tested this both on qpid 0.7 and qpid 0.10 with the same result. Is the limit-policy
option broken (I don't suppose so..)? Or what error I did?

Not entirely obvious, but you need to make the queue durable for the 
flow-to-disk option to have any effect.

Should probably raise an error when creating a non-durable queue with 
that policy rather than ignoring it.

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