Unable to start Alluxio Workers

Description

When I issue a home-dir/bin/alluxio-start all the master service will start however none of the workers will start.

I am getting the following error in the workers logdir in worker.out.
Exception in thread "main" java.lang.UnsupportedClassVersionError: alluxio/worker/AlluxioWorker : Unsupported major.minor version 51.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:643)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:277)
at java.net.URLClassLoader.access$000(URLClassLoader.java:73)
at java.net.URLClassLoader$1.run(URLClassLoader.java:212)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
at java.lang.ClassLoader.loadClass(ClassLoader.java:323)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
at java.lang.ClassLoader.loadClass(ClassLoader.java:268)
Could not find the main class: alluxio.worker.AlluxioWorker. Program will exit.

In the task.log on the master server I just see that the workers were started and then their connections were closed.

I can see where it is referenced in this jar: core/server/target/alluxio-core-server-1.1.0-sources.jar
alluxio/worker/AlluxioWorker.java

When I grep for that in the <homedir> I find this:
grep -R AlluxioWorker.java *
Binary file core/server/target/alluxio-core-server-1.1.0-sources.jar matches
Binary file core/server/target/classes/alluxio/worker/AlluxioWorker.class matches
core/server/target/maven-status/maven-compiler-plugin/compile/default-compile/inputFiles.lst:/Users/binfan/tmp/1.1/alluxio-1.1.0/core/server/src/main/java/alluxio/worker/AlluxioWorker.java

Do I need to add an export to the start script or copy the Class file to a different location?

Environment

None

Status

Assignee

Unassigned

Reporter

Toni LeTempt

Labels

Components

Affects versions

1.1.0

Priority

Blocker
Configure