Hello Everybody, sorry, noticed this just now, while cleaning my inbox.
Is there any further development on this topic ? I'd might be interested in being involved on java clustering. Regards Etienne >----- Original Message ----- >From: [email protected] >To: [email protected] >Data: Wed, 7 Jul 2010 14:59:43 +0530 >Subject: Re: Implementing clustering support for Qpid Java broker >Hi Rob, > >Yes true I agree that we need to look in to the architecture and look on how >should we implement clustering and I just post about the library since Sorin >just asked about the library and I am currently looking in to the broker >architecture before deciding anything and I hope to discuss every step in >the list before implementing anything. > >I am thinking of listing what are we going to achieve by clustering Java >broker. Then we can discuss on where should we start and what is the first >version of clustering support should do. Then we can work on it and make >sure all of them are successfully implemented. > >Currently what I am thinking is achieving HA without loosing messages which >is the basic requirement of any clustering approach. > >Thanks a lot Robert for your reply. can you please elaborate little bit on >why should we wait until the AMQP 1-0 support is finished, if there's a >pretty good reason for that we can wait until it comes up. > >Lahiru > >On Wed, Jul 7, 2010 at 2:47 PM, Robert Godfrey <[email protected]>wrote: > >> First of all we need to be clear about what we mean / want to achieve >> by "clustering". >> >> If we are talking about clustering for reliability/HA then we need to >> be very clear that the limitations AMQP 0-8/0-9/0-9-1 prevent us from >> actually implementing this unless we mandate that every message >> published into the broker is inside a transaction (due to the fact >> that published messages are not acknowledges for AMQP 0-x versions >> where x < 10). >> >> The next issue is that the Java broker has not really been designed >> with clustering in mind - it's therefore not clear inside the code >> which pieces of state need to be replicated / where the broker should >> wait to hear that state has been successfully replicated before >> proceeding. >> >> My personal view on clustering is that we need to spend a fair amount >> of time thinking about the internal architecture of the broker before >> we start worrying about what other libraries / tools we pull in. >> >> There are probably ways of doing and active-passive cluster relatively >> cheaply (essentially replicating the store to the passive broker) - >> I'm not sure if this would help your use case Lahiru. >> >> Having said all the above, I am very keen to add clustering >> functionality to the Java Broker, and I've some vague notion that I >> should start looking at this later in the year. Personally I'd be >> looking at doing it after whatever re-architecting is done for >> supporting AMQP 1-0. >> >> Sorry if I sound discouraging - and if someone can come along and show >> an easy way to add clustering, I'd be impressed. >> >> Cheers, >> Rob >> >> On 7 July 2010 00:30, Lahiru Gunathilake <[email protected]> wrote: >> > Hi devs, >> > >> > Last couple of weeks I was working with Qpid Java broker in an actual >> > production environment and I encounter a scenario where we should cluster >> > Qpid and since we do not have a native clustering support we found a >> > solution to the single point of failure of Qpid but it is not an actual >> > cluster since we do not replicate the messages among nodes. So I would be >> > really happy to work in a clustering implementation for Qpid. >> > >> > Appreciate your ideas on this and I will update the list once we discuss >> a >> > proper design for clustering implementation. >> > >> > Regards >> > Lahiru >> > >> > -- >> > Apache Qpid, Worlds dominant messaging middleware..!!! >> > >> > Senior Software Engineer >> > WSO2 Inc >> > >> >> --------------------------------------------------------------------- >> Apache Qpid - AMQP Messaging Implementation >> Project: http://qpid.apache.org >> Use/Interact: mailto:[email protected] >> >> > > >-- >Apache Qpid, Worlds dominant messaging middleware..!!! > >Senior Software Engineer >WSO2 Inc > --------------------------------------------------------------------- Apache Qpid - AMQP Messaging Implementation Project: http://qpid.apache.org Use/Interact: mailto:[email protected]
