StackOverflowError exception when extensions are defined in the pom

Same kind of issue with maven 2.0.9 and sonar 1.2.1 with JDK 1.6.0_04 in the prepare target of sonar, but with a stack slightly different:
Failing for both single module and mutli-modules projects.
Failing as well for simple project without dependency.

Command line use: mvn org.codehaus.sonar:sonar-maven-plugin:1.2.1:sonar 2.1:sonar

[ERROR] Cannot execute the command org.codehaus.sonar:sonar-core-maven-plugin:1.2.1:prepare
java.lang.StackOverflowError
at java.util.zip.ZipFile.getEntry(ZipFile.java:148)
at java.util.jar.JarFile.getEntry(JarFile.java:206)
at java.util.jar.JarFile.getJarEntry(JarFile.java:189)
at sun.misc.URLClassPath$JarLoader.getResource(URLClassPath.java:754)
at sun.misc.URLClassPath$JarLoader.findResource(URLClassPath.java:732)
at sun.misc.URLClassPath.findResource(URLClassPath.java:145)
at java.net.URLClassLoader$2.run(URLClassLoader.java:362)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findResource(URLClassLoader.java:359)
at org.codehaus.classworlds.RealmClassLoader.findResource(RealmClassLoader.java:232)
at java.lang.ClassLoader.getResource(ClassLoader.java:977)
at org.codehaus.classworlds.RealmClassLoader.getResourceDirect(RealmClassLoader.java:247)
at org.codehaus.classworlds.DefaultClassRealm.getResource(DefaultClassRealm.java:300)
at org.codehaus.classworlds.RealmClassLoader.getResource(RealmClassLoader.java:237)
at org.codehaus.classworlds.DefaultClassRealm.getResource(DefaultClassRealm.java:288)
at org.codehaus.classworlds.DefaultClassRealm.getResource(DefaultClassRealm.java:314)
at org.codehaus.classworlds.RealmClassLoader.getResource(RealmClassLoader.java:237)
at org.codehaus.classworlds.DefaultClassRealm.getResource(DefaultClassRealm.java:288)
at org.codehaus.classworlds.DefaultClassRealm.getResource(DefaultClassRealm.java:288)
at org.codehaus.classworlds.DefaultClassRealm.getResource(DefaultClassRealm.java:314)
..........
..........
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO] ------------------------------------------------------------------------
[INFO] Cannot execute the command org.codehaus.sonar:sonar-core-maven-plugin:1.2.1:prepare

Hi Jean Paul, do you have dependencies or extensions on org.apache.maven.wagon ? It seems to be the origin of the problem, since wagon has been included into maven 2.0.9.

Hi Simon,

Thanks a lot. Indeed you are right, in the POM of the project there was still the Wagon extension.
It used to work with maven 2.0.8 but not anymore with maven 2.0.9. By removing Wagon extension from the POM, the sonar plugin is now working properly with maven 2.0.9.

Thanks,
Jean-Paul

As commented, the workaround is to remove the wagon-webdav extension from poms.

Hi

Excuse me Simon, but I'm not agree with you decision.
Maven & sonar are tools design to be used into open source world but also into professional world.
In professional world (like my company) we try to enforce tools like maven sonar ant archiva (its so difficult to evangelism .. )

As describe into sonatype maven guide, we have a private repository to deploy our private jar. (we use archiva)
To deploy into archiva we use webdav plug in (we tried with scp, but too many pb with file right on repository).
maven 2.0.8 has a big pb. it already check snapshot and plug in version on all repository. Now we have many project and performance are very poor.
This bugs is fix in 2.0.9

All future maven version will have a the webdav plugin. You can not close the door to this future version for people which use webdav plugin ?
I think you can not just close this issue. Maybe there is a workaround by playing with profile ....

Regards
Christophe

Hi Christophe,

Of course sonar does not forbid to use webdav. The workaround is to remove a useless <extension> definition because it's already integrated to the maven core. Projects can always use webdav. Moreover the sonar project itself offers proof that it works. We build sonar with maven 2.0.9, deploy it on codehaus webdav repositories and execute sonar on sonar...

Do you agree ?

We are using koshuke's svn wagon provider. Same case here and it's not included in the maven 2.0.9 or in some later version. Hmm - how to workaround inthis case? Any suggestion?

In fact the problem is a lot more critic that what we imagined.

The exception seems to be raised each time an extension is defined in the pom and the number of classes contained in the jar extension is important.

We don't know why, but the problem doesn't occur with Maven 2.0.7. This can be considered as a temporary workaround.

I've the same problem.

I also had the wagon extension, but removing it didn't change anything. I'm using sonar 1.5.1 and maven 2.0.9.
Running on Mac OSX (intel), Java 1.5.

Hello Tom, in fact this problem occurs each time a maven extension is defined in the pom file. Do you confirm you have others extensions defined ?

thanks
Freddy

Hi Freddy,
I'm afraid I have to say that my pom file does not use any extensions at all.

The only 'strange' thing about the pom is that is uses a parent pom (which also does not have any extensions).

If you want I can send you the pom and its parent pom file.

Hi Tom, it would be a great help if you could send a maven project example (without extension) to reproduce this exception. Just for information, this bug seems to be related to the way we use Maven Embedder.
Thanks,
Freddy

Freddy, I've just sent you the pom files that give me the stack overflow.

It might have something to do with the <parent> relationship between the two files. I have merged the two pom files into one file, and then the stack overflow doesn't occur!

I've the same behavior (same trace).
Also, i have some plugin extension, but parent pom too with module.
The sonar goal is executed on my plugin A.
P1 parentOf P2 parentOf P3 parentOf P3 havingModule M1 parentOf A

I don't think so this error is due to extensionq, but is due to parent relationships resolution.
Relevant trace :
[INFO] [cobertura:cobertura]
[INFO] Cobertura Report generation was successful.
[INFO] snapshot fr.gfi.forge.pom.projects:csn-jar-projects-parent:1.0.3-SNAPSHOT: checking for updates from csn.snapshots
[INFO] snapshot fr.gfi.forge.pom.projects:csn-abstract-projects-parent:1.0.3-SNAPSHOT: checking for updates from csn.snapshots
[INFO] snapshot fr.gfi.forge.pom.project:csn-projects-parent:1.0.3-SNAPSHOT: checking for updates from csn.snapshots
[ERROR] Cannot execute the command org.codehaus.sonar:sonar-core-maven-plugin:1.6:collect
java.lang.StackOverflowError
at java.util.zip.ZipFile.getEntry(ZipFile.java:148)
at java.util.jar.JarFile.getEntry(JarFile.java:206)
at java.util.jar.JarFile.getJarEntry(JarFile.java:189)
at sun.misc.URLClassPath$JarLoader.getResource(URLClassPath.java:754)
at sun.misc.URLClassPath$JarLoader.findResource(URLClassPath.java:732)
at sun.misc.URLClassPath.findResource(URLClassPath.java:145)
at java.net.URLClassLoader$2.run(URLClassLoader.java:362)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findResource(URLClassLoader.java:359)
at org.codehaus.classworlds.RealmClassLoader.findResource(RealmClassLoader.java:232)
at java.lang.ClassLoader.getResource(ClassLoader.java:978)
at org.codehaus.classworlds.RealmClassLoader.getResourceDirect(RealmClassLoader.java:247)
at org.codehaus.classworlds.DefaultClassRealm.getResource(DefaultClassRealm.java:300)
at org.codehaus.classworlds.RealmClassLoader.getResource(RealmClassLoader.java:237)
at org.codehaus.classworlds.DefaultClassRealm.getResource(DefaultClassRealm.java:288)
at org.codehaus.classworlds.DefaultClassRealm.getResource(DefaultClassRealm.java:314)
at org.codehaus.classworlds.RealmClassLoader.getResource(RealmClassLoader.java:237)
...

An important thing, this error stills exist on 1.6

I also have this problem on some projects, with Sonar 1.6 and maven 2.0.9 or 2.0.10. I use maven 2.0.8 as a work-around.
The projects that fail are multi-module.

I got a problem with Sonar 1.6, maven DAV wagon and m2eclipse.

We're using both maven 2.0.10 and m2eclipse 0.9.7.

In our top pom we used to add :

<extensions>
<!-- Make use of WEB-DAV plugin for deployement -->
<extension>
<groupId>org.apache.maven.wagon</groupId>
<artifactId>wagon-webdav</artifactId>
<version>1.0-beta-2</version>
</extension>
</extensions>

This one allow us to deploy our artifact to both Nexus with maven
2.0.10 and m2eclipse.
As of maven 2.0.9 it's no more mandatory.

With my first tests with sonar, I got problems with it so I removed
from on top pom and everything works fine till we're using maven
2.0.10.

But m2eclipse use a pre maven 2-1 embedded and this one require wagon-webdav.

Any way to get this wagon-webdav / sonar problem fixed since it prevent us now to use sonar, which is sad since it's a great tool.

It's fixed in the latest trunk ?

Not completely, otherwise the ticket would be fixed ;o)
But good news, 90% of the work are done. We'll release a milestone next days. Please stay tuned.

Good news.

Please send a note on sonar-user list so I could grab the milestone and check it.

Regards

I'm so happy to fix this issue that I'm gonna cry ;o)

Congrats !

You could cry now

When is expected the 1.8 milestone ?

He did cry, I witnessed !!