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question asked: Nov 08 '11, 11:10 a.m.
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last updated: Nov 08 '11, 11:10 a.m.

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How does build queue works

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Karthik Krishnan (889●9●122●164) | asked Nov 08 '11, 11:10 a.m.
Hi,

Can anyone explain how Build Queue works in RTC? (per user and per build engine)

Thanks
Karthik Krishnan

3 answers

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Ralph Schoon (63.5k●3●36●46) | answered Nov 08 '11, 4:16 p.m.
FORUM ADMINISTRATOR / FORUM MODERATOR / JAZZ DEVELOPER
Hi,

to my knowledge the build engines look (polls in a certain interval you can set in the start-up parameters) at the queues it is responsible for. As soon as there is a request it grabs it and starts building. I don't think there s a priority mechanism behind it. Once it is done it will look at the next request in the queues and do that.

You could run several build engines using different -data folders running on one machine to do things in parallel, but I think there is no coordination besides the first engine that finds some work in its interval grabs it.

That is about all I know.
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Karthik Krishnan (889●9●122●164) | answered Nov 09 '11, 3:16 a.m.
Hi,

to my knowledge the build engines look (polls in a certain interval you can set in the start-up parameters) at the queues it is responsible for. As soon as there is a request it grabs it and starts building. I don't think there s a priority mechanism behind it. Once it is done it will look at the next request in the queues and do that.

You could run several build engines using different -data folders running on one machine to do things in parallel, but I think there is no coordination besides the first engine that finds some work in its interval grabs it.

That is about all I know.


Thanks Ralph. Can you explain how this works in following scenario?

Ex:

Integration Build Def 1 -> Build Engine 1
Integration Build Def 2 -> Build Engine 2
Integration Build Def 3 -> Build Engine 1

If a user (user1) requests Integration build 1,2 and 3 (in order) what I was expecting is that it will run 1 and 2 and put 3 on queue since 1 and 2 uses two different engines

But it looks like its runs 1 and puts 2 and 3 on queue for user1
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Ralph Schoon (63.5k●3●36●46) | answered Nov 09 '11, 3:51 a.m.
FORUM ADMINISTRATOR / FORUM MODERATOR / JAZZ DEVELOPER
Hi,

all requests should be go into the queues. The build engines should check for the next on the queue not run. There is only a queue for the build definition - unrelated to any user. I am not sure how it would prioritize the different build queues.

So the question really is, why Build Engine 2 does not pick its build up. Is that running on a different machine? E.g. you can't just run the same JBE.exe on the same machine. You have at least to provide a different workspace for the JBE e.g. using the -data <WorkspacePath>.

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