Github user mateiz commented on the pull request:
https://github.com/apache/spark/pull/1929#issuecomment-53361051
Hey @rcsenkbeil, so I tested this out manually, but unfortunately it
doesn't seem to quite work -- you can't use the new classes in the REPL, though
you can create them using reflection. Here's a sample session:
```
scala> :cp /Users/matei/workspace/jar-test/simple-jar-v1.jar
Added '/Users/matei/workspace/jar-test/simple-jar-v1.jar'. Your new
classpath is:
"/Library/Java/JavaVirtualMachines/jdk1.7.0_45.jdk/Contents/Home/jre/lib/resources.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_45.jdk/Contents/Home/jre/lib/rt.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_45.jdk/Contents/Home/jre/lib/jsse.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_45.jdk/Contents/Home/jre/lib/jce.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_45.jdk/Contents/Home/jre/lib/charsets.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_45.jdk/Contents/Home/jre/lib/jfr.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_45.jdk/Contents/Home/jre/lib/JObjC.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_45.jdk/Contents/Home/jre/lib/ext/dnsns.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_45.jdk/Contents/Home/jre/lib/ext/localedata.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_45.jdk/Contents/Home/jre/lib/ext/sunec.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_45.jdk/Contents/Home/jre/lib/ext/sunjce_provider.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_45.jdk/Contents/Ho
me/jre/lib/ext/sunpkcs11.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_45.jdk/Contents/Home/jre/lib/ext/zipfs.jar:/System/Library/Java/Extensions/MRJToolkit.jar:/System/Library/Java/Extensions/QTJava.zip:/Users/matei/workspace/apache-spark/conf:/Users/matei/workspace/apache-spark/assembly/target/scala-2.10/spark-assembly-1.1.0-SNAPSHOT-hadoop1.0.4.jar:/Users/matei/workspace/jar-test/simple-jar-v1.jar"
scala> Class.forName("test.Test").newInstance
res0: Any = Test2
scala> new test.Test
<console>:11: error: not found: value test
new test.Test
^
```
My simple-jar-v1.jar just contains a class called Test in package test.
Have you seen this happen yourself? It doesn't seem like this will be
usable enough in its current form.
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