> -----Original Message----- > From: Rothkin, Steve (NY81) [mailto:steve.roth...@honeywell.com] > Sent: Tuesday, July 16, 2013 10:44 AM > To: users@qpid.apache.org > Subject: RE: Queue mirroring with message grouping and clustering on > Windows > > > From: Steve Huston [mailto:shus...@riverace.com] > > > I'm considering a Qpid.22 implementation under MS Windows for > > > message queueing. In the future we might go to a mixed environment > > > with both Windows and Linux computers. > > > For fault tolerance, I want the queues to be mirrored across 2 to 3 > > > computers which are connected by high speed LAN. Each queue will > > > have multiple consumers on different computers (including some NOT > > > hosting the queue), so I also need to use the message grouping > > > feature to ensure that messages from a single source are not processed > out of order. > > > > Ok. > > > > > 1) Is clustering required to do this (on RabbitMQ it is, but RabbitMQ > appears > > > to not support message grouping yet)? > > > > For mirroring across a set of nodes for FT, yes. > > > > > 2) What is required to use clustering on Windows (and is it even > available)? > > > So far I've read that Corosync is required for clustering and in > > > another place (a few years old) I read that Corosync isn't ported > > > to/doesn't build on Windows. > > > > The new HA module in Qpid requires integration with a resource > > manager; on Linux this is rgmanager (corosync is involved to manage > > the cluster itself, but it's not directly involved with Qpid). > > Currently there is no integration with a resource manager on Windows > > clusters. It's probably not a gigantic amount of work to get it there, but > > it's > work that is needed. > > If there is a mix of linux and windows computers hosting the queues, do they > need to use the same (or a compatible) resource manager?
Yes, the brokers participating in the cluster do need to use the same resource manager. > As a way of getting around the need for a resource manager on Windows, if I > made a cluster of linux machines (or linux VMs running under Windows) to > host the mirrored queues would it then be ok/supported to have windows > clients (NOT part of the cluster) to write to and read from the queues? Absolutely. > If I wanted to try to do the windows resource manager implemtentation > (assuming my boss would allow it, and given that I have zero experience > developing within Qpid), is there existing documentation that makes it clear > (from the Qpid point of view) what I need to add to the code. If so, pointers > to where to look would be helpful. You wouldn't necessarily need to add anything to Qpid - my understanding is that it's more of a Windows scripting/integration issue and not so much a Qpid coding issue. You can check this book: http://qpid.apache.org/releases/qpid-0.22/cpp-broker/book/chapter-ha.html Section 1.11.10 has the info to get you going. > BTW, while the queues have to be HA/fault tolerant, I'm expecting that most > of them DON'T need the messages to be persistent because the messages > also have a timeliness aspect to them. So if all the hosting nodes go down at > the same time, it may not make sense to be able to recover the messages if > it takes more than a few minutes for one of them to come back up. That's going to make your life much easier. -Steve --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@qpid.apache.org For additional commands, e-mail: users-h...@qpid.apache.org
