Comments on: How To Implement a Distributed CommonJ WorkManager http://jonasboner.com/2006/09/14/how-to-implement-a-distributed-commonj-workmanager/ Down To The Bone Sun, 12 Oct 2008 14:56:24 +0000 http://wordpress.org/?v=2.0.2 by: Kai Zhang http://jonasboner.com/2006/09/14/how-to-implement-a-distributed-commonj-workmanager/#comment-45549 Wed, 16 Jul 2008 20:08:39 +0000 http://jonasboner.com/2006/09/14/how-to-implement-a-distributed-commonj-workmanager/#comment-45549 <p>Can you give me a description about WorkManager.INDEFINITE? </p> <p>Because even if I set Work class to return false for isDaemon(), the worker thread continue to run after the WorkManager returns from the waitForAll method.</p> <p>So, that means when set to WorkManager.INDEFINITE, the JVM will start spawning a lot of threads that may not be reaped.</p> Can you give me a description about WorkManager.INDEFINITE?

Because even if I set Work class to return false for isDaemon(), the worker thread continue to run after the WorkManager returns from the waitForAll method.

So, that means when set to WorkManager.INDEFINITE, the JVM will start spawning a lot of threads that may not be reaped.

]]> by: john http://jonasboner.com/2006/09/14/how-to-implement-a-distributed-commonj-workmanager/#comment-14745 Wed, 03 Oct 2007 10:38:54 +0000 http://jonasboner.com/2006/09/14/how-to-implement-a-distributed-commonj-workmanager/#comment-14745 <p>sure, sorry, was trying the code sample late in the evening ;-)</p> sure, sorry, was trying the code sample late in the evening ;-)

]]> by: Jonas http://jonasboner.com/2006/09/14/how-to-implement-a-distributed-commonj-workmanager/#comment-14738 Tue, 02 Oct 2007 19:57:16 +0000 http://jonasboner.com/2006/09/14/how-to-implement-a-distributed-commonj-workmanager/#comment-14738 <p>Hi John.</p> <p>The idea is to start up the Worker and the WorkManager not only in different threads but on different nodes (JVMs) - in order to get it to scale out distributed.</p> <p>Makes sense?</p> <p>/Jonas</p> Hi John.

The idea is to start up the Worker and the WorkManager not only in different threads but on different nodes (JVMs) - in order to get it to scale out distributed.

Makes sense?

/Jonas

]]> by: john http://jonasboner.com/2006/09/14/how-to-implement-a-distributed-commonj-workmanager/#comment-14737 Tue, 02 Oct 2007 19:46:48 +0000 http://jonasboner.com/2006/09/14/how-to-implement-a-distributed-commonj-workmanager/#comment-14737 <p>if the manager and worker are started in the same thread the worker will just block, wouldn't you need to start the worker in a different thread too?</p> if the manager and worker are started in the same thread the worker will just block, wouldn’t you need to start the worker in a different thread too?

]]> by: Jonas http://jonasboner.com/2006/09/14/how-to-implement-a-distributed-commonj-workmanager/#comment-7020 Mon, 26 Feb 2007 21:57:09 +0000 http://jonasboner.com/2006/09/14/how-to-implement-a-distributed-commonj-workmanager/#comment-7020 <p>Hi Eric.</p> <p>Sorry that you didn't get it to work. I don't know exactly what you mean, what did not work and which typos you are referring to but if you are interested in getting something like this running then I suggest that you take a look at this article: http://jonasboner.com/2007/01/29/how-to-build-a-pojo-based-data-grid-using-open-terracotta/</p> <p>It is a much more thorough article addressing the same or similar use-case (also implementing the CommonJ spec.) but takes it much further by addresses real-world requirements and deployment issues etc. </p> <p>It also has code that you can check out as well as a sample app (distributed web spider). See the article (bottom) for details, but here is where you can find the code: http://svn.terracotta.org/svn/forge - (module projects/labs/opendatagrid)</p> Hi Eric.

Sorry that you didn’t get it to work. I don’t know exactly what you mean, what did not work and which typos you are referring to but if you are interested in getting something like this running then I suggest that you take a look at this article: http://jonasboner.com/2007/01/29/how-to-build-a-pojo-based-data-grid-using-open-terracotta/

It is a much more thorough article addressing the same or similar use-case (also implementing the CommonJ spec.) but takes it much further by addresses real-world requirements and deployment issues etc.

It also has code that you can check out as well as a sample app (distributed web spider). See the article (bottom) for details, but here is where you can find the code: http://svn.terracotta.org/svn/forge - (module projects/labs/opendatagrid)

]]> by: Eric DeFazio http://jonasboner.com/2006/09/14/how-to-implement-a-distributed-commonj-workmanager/#comment-7018 Mon, 26 Feb 2007 21:42:31 +0000 http://jonasboner.com/2006/09/14/how-to-implement-a-distributed-commonj-workmanager/#comment-7018 <p>The above code does not actually work... I was trying the (unclustered) workmanager using the simple blocking queue, (after I fixed a bunch of typos) and when I run it nothing actually happens.(actually it just sits there blocking constantly). I included the spring and common-j implementations as well as the spring-support jars. Do you have a working version of the code or so I just cut bait and write my own?</p> <p>Thanks, Eric</p> The above code does not actually work… I was trying the (unclustered) workmanager using the simple blocking queue, (after I fixed a bunch of typos) and when I run it nothing actually happens.(actually it just sits there blocking constantly). I included the spring and common-j implementations as well as the spring-support jars. Do you have a working version of the code or so I just cut bait and write my own?

Thanks, Eric

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