[jira] [Created] (ZEPPELIN-1186) Change interpreter binding throws NPE

[Mina Lee (JIRA)]

Mina Lee created ZEPPELIN-1186:
----------------------------------

             Summary: Change interpreter binding throws NPE
                 Key: ZEPPELIN-1186
                 URL: https://issues.apache.org/jira/browse/ZEPPELIN-1186
             Project: Zeppelin
          Issue Type: Bug
    Affects Versions: 0.7.0
            Reporter: Mina Lee
            Assignee: Mina Lee
             Fix For: 0.7.0


Here is the step to reproduce
1. Create notebook
2. type '%fake ' including space at the end
3. Unbind markdown interpreter from note binding and hit save

{code}
Caused by: java.lang.NullPointerException
        at 
org.apache.zeppelin.helium.HeliumApplicationFactory.onUnbindInterpreter(HeliumApplicationFactory.java:447)
        at 
org.apache.zeppelin.notebook.Notebook.fireUnbindInterpreter(Notebook.java:797)
        at 
org.apache.zeppelin.notebook.Notebook.bindInterpretersToNote(Notebook.java:272)
        at 
org.apache.zeppelin.rest.NotebookRestApi.bind(NotebookRestApi.java:177)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at 
org.apache.cxf.service.invoker.AbstractInvoker.performInvocation(AbstractInvoker.java:180)
        at 
org.apache.cxf.service.invoker.AbstractInvoker.invoke(AbstractInvoker.java:96)
        ... 50 more
{code}



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