Github user kjmrknsn commented on the issue:
https://github.com/apache/zeppelin/pull/2658
I noticed that the JGit minimum execution environment became Java 8 from
JGit 4.6.
https://projects.eclipse.org/projects/technology.jgit/releases/4.6
> Update JGit minimum execution environment to JavaSE-1.8
When I ran Zeppelin by Java 7, the following message was shown and Zeppelin
could not be launched.
```
Caused by: java.lang.UnsupportedClassVersionError:
org/eclipse/jgit/lib/Repository : Unsupported major.minor version 52.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:803)
at
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:442)
at java.net.URLClassLoader.access$100(URLClassLoader.java:64)
at java.net.URLClassLoader$1.run(URLClassLoader.java:354)
at java.net.URLClassLoader$1.run(URLClassLoader.java:348)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:347)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:312)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:195)
at
org.apache.zeppelin.notebook.repo.NotebookRepoSync.<init>(NotebookRepoSync.java:80)
at
org.apache.zeppelin.server.ZeppelinServer.<init>(ZeppelinServer.java:127)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
Method)
at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at
org.glassfish.hk2.utilities.reflection.ReflectionHelper.makeMe(ReflectionHelper.java:1350)
at org.jvnet.hk2.internal.Utilities.justCreate(Utilities.java:1009)
... 30 more
```
Is it OK for Zeppelin not to support Java 7?
---
