Re: [Condor-users] Problem executing jar files

[Matthew Farrellee <matt@xxxxxxxxxxx>]

Aengus McCullough wrote:
> I am having difficulty executing a Java job on Condor when it is
> packaged as a Jar.  The same job runs fine when it is unpacked.  I am
> getting the following error:
>
> java.lang.ClassNotFoundException: gab142.jar not found in
> gnu.gcj.runtime.SystemClassLoader{urls=[file:/home/software/condor/condo
> r-6.8.2_x86_64/lib/,file:/home/software/condor/condor-6.8.2_x86_64/lib/s
> cimark2lib.jar,file:./,file:/condor/execute/dir_471/gab142.jar],
> parent=gnu.gcj.runtime.ExtensionClassLoader{urls=[], parent=null}}
>    at java.net.URLClassLoader.findClass(libgcj.so.7)
>    at java.lang.ClassLoader.loadClass(libgcj.so.7)
>    at java.lang.ClassLoader.loadClass(libgcj.so.7)
>    at java.lang.Class.forName(libgcj.so.7)
>    at CondorJavaWrapper.main(CondorJavaWrapper.java:101)
>
>
> I can see the problem is something to do with the condor_install_dir/lib
> folder but I am not sure what exactly.  Can anyone help?  Also does
> anyone know if "-jar" needs to be specified as one of the arguments when
> submitting a .jar file to condor.
>
> ----------------submit file----------------------------
> Universe                = java
> Executable              = gab142.jar
> jar_files               = gab142.jar
> Arguments               = gab142.jar -i io3.txt
> Output                  = gab142.out
> Error                   = gab142.error
> transfer_input_files    =  io3.txt
> should_transfer_files   = YES
> when_to_transfer_output = ON_EXIT
> Initialdir = /home/users/a4131673
>
> ------------------------------------------------
> Thanks,
> Aengus

Aengus,

The manual doesn't seem to cover the case of an executable jar file. 
Probably because the Java universe predates them.

You should either specify the entry point to the jar on the Arguments 
line, i.e. Arguments = some.main.ClassFile -i io3.txt, or try passing 
-jar to the JVM via java_vm_args = -jar.

http://www.cs.wisc.edu/condor/manual/v7.1/2_8Java_Applications.html

Best,


matt