Launchpad itself

why build for trusty works fine but for precise not

Asked by Jeroen Baten

I try building the LibrePlan packages on launchpad. For ubunty trusty this works fine. Building my package for ubuntu precise fails with missing maven-site-plugin. That plugin is never in my pom and not even in my maven dependency tree. Anybody got an idea where this is coming from? Any and all help is greatly appreciated.

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Language:
German Edit question
Status:
Solved
For:
Launchpad itself Edit question
Assignee:
Daniel Edit question
Solved by:
Colin Watson
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Colin Watson (cjwatson) said : 		#1

Can you link to the failing builds, please?

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Jeroen Baten (jbaten) said : 		#2

Good build (trusty): https://launchpadlibrarian.net/204966123/buildlog_ubuntu-trusty-amd64.libreplan_1.4.1-1.trusty_BUILDING.txt.gz

Bad build (precise): https://launchpadlibrarian.net/205650947/buildlog_ubuntu-precise-amd64.libreplan_1.4.1-3.precise_BUILDING.txt.gz

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Jeroen Baten (jbaten) said : 		#3

I increased verbosity on maven and made a new build (fails again)

https://launchpadlibrarian.net/205748169/buildlog_ubuntu-precise-amd64.libreplan_1.4.1-5.precise_BUILDING.txt.gz

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Jeroen Baten (jbaten) said : 		#4

and more.... https://launchpadlibrarian.net/205758137/buildlog_ubuntu-precise-amd64.libreplan_1.4.1-9.precise_BUILDING.txt.gz

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Jeroen Baten (jbaten) said : 		#5

The build log is filles with unknownhost exceptions. This seems to be a dns lookup issue on the build host.

" Caused by: java.net.UnknownHostException: gettext-commons.googlecode.com"

There seem to be some issues with libdns on ubuntu. Maybe they are related to this?

https://mail-archives.apache.org/mod_mbox/maven-users/201007.mbox/%<email address hidden>%3E

http://stackoverflow.com/questions/3145896/what-could-be-causing-error-transferring-file-in-maven

Can someone please attent to this? Thank you.

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Best Colin Watson (cjwatson) said : 		#6

You aren't allowed access to any external network resources on Launchpad hosts; this is by design and not a bug. For maven, the trick is always to build-depend on sufficient packaged versions of the relevant libraries that you don't need to go out to the network to get them.

I expect that the difference between precise and trusty is because one of the libraries you're build-depending on gained support for something you're relying on in trusty, while in precise maven finds that it's lacking something and so goes to the network. However, I have very little Java experience; all that Launchpad admins can do is tell you about the constraints in place, but you really need a Java packaging expert to help you track this down.

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Jeroen Baten (jbaten) said : 		#7

Thanks Colin Watson, that solved my question.