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From Martin Gainty <>
Subject RE: Using build-helper-maven-plugin in bundle projects causing problems with <buildNumber> in -SNAPSHOT builds
Date Fri, 28 Aug 2015 13:45:38 GMT

Subject: RE: Using build-helper-maven-plugin in bundle projects causing problems with <buildNumber>
in -SNAPSHOT builds
Date: Thu, 27 Aug 2015 17:20:13 +0000

It was pointed out to me that the sample projects I uploaded were version 0.0.1 rather than
0.0.1-SNAPSHOT.  My apologies about that.  I have continued to experiment and I thought I
sent the version before I
 stripped the -SNAPSHOT tab out.

Attached is a version of the project with version 0.0.1-SNAPSHOT.  It also rearranges the
parent structure ever so slightly.
MG>which pom contains <buildNumber>50</buildNumber> ?
MG>I dont see <buildnumber>50</buildnumber in any of the poms


From: []

Sent: Wednesday, August 26, 2015 2:46 PM


Subject: Using build-helper-maven-plugin in bundle projects causing problems with <buildNumber>
in -SNAPSHOT builds




NOTE: I’ve cross posted this on the Mojohaus list.

We’re having a problem using build-helper-maven-plugin to deploy features.xml files in projects
that also deploy a bundle/.jar.  The maven-metadata.xml in Nexus has wrong <buildNumber>.
 We have projects that have features.xml files that are deployed to Nexus using the build-helper-maven-plugin
along with the bundle/.jar and POM. The maven-metadata.xml will have, for example, <buildNumber>
51, but the <value> tags in the <snapshotVersion>
 enties will be -50.

I am attaching which includes a set of projects that will demonstrate the issue,
as well as the file maven-deploy-notes.txt which shows some TCP log results, and a set
 of maven-metadata.xml files (renamed for differentiation) showing the <buildNumber>
and <value> entries we're seeing.

This issue causes a problem when we try to do on-demand builds that need to be installed on
the TEST environment, which _must_ go through Nexus - we don't do the build on TEST... we
 do the build on our build system which deploys the build to Nexus. The TEST system is then
unable to download the 'latest' build due to the buildNumber issue.

There is a Nexus Scheduled Task that runs daily at 4am - the Remote Snapshots from Repository
task. In addition to removing old snapshot versions, this task seems to "correct" the
 buildNumber issue, ensuring that the buildNumber matches the last build in the directory.
This allows us to install nightly builds in TEST, but doesn't help with mid-day build problems.

We've seen this problem using Apache Maven 3.0.4, 3.0.5 and 3.3.3, as well as Oracle JDK versions
1.7.0 update 55 and 1.7.0 update 79. Developers are on Windows 7, and the TeamCity
 build system runs on Linux.  Nexus is running on SUSE Linux Enterprise Server 11 SP3 with
Java 1.7.0_55.

Have we done something wrong constructing our POMs?  Is there an issue with the plugin?




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