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Subject: Re: Confusing docs about disabling flow control
From: Jason Dillon <jason@planet57.com>
In-Reply-To: <EF0D3935-6213-4413-A505-2DAE89E228B5@fusesource.com>
Date: Tue, 31 Jan 2012 19:19:25 -0800
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 <EF0D3935-6213-4413-A505-2DAE89E228B5@fusesource.com>
To: users@activemq.apache.org

So is the community abandoning its documentation in favor of the fuse =
documentation?  I've seen similar replies a few times to go look at fuse =
docs vs. what is on the activemq.apache.org site before.

Would be nice to have a single concise location to find the most =
current/accurate/comprehensive documentation for the project.

--jason


On Jan 30, 2012, at 1:41 AM, Torsten Mielke wrote:

> Hello Jason,
>=20
> Yes, you can simply set producerFlowControl=3Dfalse on an =
out-of-the-box broker configuration without having to change the =
underlying cursor.=20
> When disabling flow control, make sure to set upper limits for =
storeUsage tempUsage and memoryUsage to prevent the broker from running =
out of disk space or heap memory.
>=20
>=20
> There is perhaps better documentation provided by FuseSource on this =
topic
> http://fusesource.com/products/enterprise-activemq/#documentation
>=20
> Also see the persistence guide which has a full chapter on message =
cursors
> http://fusesource.com/docs/broker/5.5/persistence/index.html
>=20
>=20
> Hope this helps,
>=20
>=20
>=20
> Torsten Mielke
> torsten@fusesource.com
> tmielke@blogspot.com
>=20
>=20
> On Jan 29, 2012, at 2:36 AM, Jason Dillon wrote:
>=20
>> Near the bottom of this page =
http://activemq.apache.org/producer-flow-control.html it shows:
>>=20
>> <snip>
>> Disabling Flow Control
>> A common requirement is to disable flow control so that message =
dispatching continues until all available disk is used up by pending =
messages (whether persistent or non persistent messaging is configured). =
To do this enable Message Cursors.
>> </snip>
>>=20
>> And then on the page it refers =
http://activemq.apache.org/message-cursors.html the documentation =
suggests that the default cursor is the store impl.
>>=20
>> If I want (and do) to use the default store impl but I want to =
disable flow control (as it says above) then there really is nothing to =
do related to message cursors, but only to set producerFlowControl=3Dfalse=
 for the destinations?  The documentation here is not clear.
>>=20
>> Its also a bit confusing at the bottom of this page, where it covers =
"Configuring Cursors" that it also configures things like dispatch =
policy and deal letter strategy.  How are these related to cursors?
>>=20
>> Also this document covers 3 cursors types vm, file and store, but the =
configuration guide at the bottom only states that vmCursor and =
fileCursor (for example) are valid.
>>=20
>> --jason
>=20