Description of problem:

Drools compiler throws wrong class format exception in Fuse 6.2.1 under Java 1.8. See stack trace. It is possible to compile the same project under Java 1.7.

Version-Release number of selected component (if applicable):

Product version - BxMS 6.2.0.GA (build 6.3.0.Final-redhat-5)
Integration package for BxMS 6.2.0 and Fuse 6.2.1 (build 1.3.0.redhat-002)
Fuse - version 6.2.1

How reproducible:

Run "fuse-bxms-jbpm-workitems-camel-quickstart" from integration package under Fuse 6.2.1 and Java 1.8 (openjdk).

1. Add Maven repositories to <FUSE_DIR>/etc/org.ops4j.pax.url.mvn.cfg:

• http://download.lab.bos.redhat.com/brewroot/repos/jb-bxms-6.2-build/latest/maven@id=product
• http://download.lab.bos.redhat.com/brewroot/repos/jb-bxms-6.2-build/latest/maven@id=intpack

2. run following commands in Fuse:

$ features:addurl mvn:org.drools/drools-karaf-features/6.3.0.Final-redhat-5/xml/features
$ features:addurl mvn:org.jboss.integration.fuse/karaf-features/1.3.0.redhat-002/xml/features
$ features:addurl mvn:org.jboss.integration.fuse.quickstarts/karaf-features/1.3.0.redhat-002/xml/features
$ features:install fuse-bxms-jbpm-workitems-camel-quickstart

Actual results:

Quickstart installation will fail with attached stack trace.

Expected results:

Quickstart should run successfully.