[p2-dev] Galileo mirroring problem. Need help!

[Thomas Hallgren <thomas@xxxxxxx>]

I have a major problem with the P2 mirroring in Galileo Builder. I would 
really appreciate some help pinning it down.

The problem occurs during the mirroring phase. A RawMirrorRequest is 
executed to fetch a xxx.jar.pack.gz file and it succeeds without 
problems. Next, I try to unpack this jar as a sibling. This also 
succeeds on most files, but not all. The problem manifests itself like this:

org.eclipse.core.runtime.CoreException: Unable to unpack artifact 
osgi.bundle,org.eclipse.buckminster.maven,1.1.350.r10157 in repository 
file:/shared/galileo/buckyBuild/buildresults/final/aggregate: Error 
reading signed content:/tmp/signatureFile5703.jar
Caused by: java.security.SignatureException: Either the manifest file or 
the signature file has been tampered in this jar: /tmp/signatureFile5703.jar

It only manifests itself when running Java 5 on the build machine (a J9 
for ppc). If I run the same build locally on my machine, pointing to the 
exact same repository, everything is fine. Moreover, to verify the 
consistency of the file on the actual machine where it fails, I tested 
using unpack200 (from the same JVM). That completes without problems and 
leaves a resulting jar file. I checked this jar file with jarsigner 
-verify <jar> and it claims the file is OK.

So what can happen here that makes P2 complain when unpacking? And why 
only with one particular VM? Any ideas are greatly appreciated. I'm 
starting to drain out of them.

- thomas