Thanks for the explanation BUT this looks like a bug and not a feature. It
would be hard to explain to user that they need to copy paste all the
content of notebooks, right?

בתאריך יום ב׳, 17 באוג׳ 2015, 17:57 מאת Joel Zambrano <[email protected]>:

> This is because interpreters and notebooks have unique ids and each
> notebook is bound to one interpreter by ids. So even though the new
> interpreter has the same name its is different and the notebook binding
> refers to the old id.
>
> Thanks,
> Joel
>
> > On Aug 17, 2015, at 1:09 AM, IT CTO <[email protected]> wrote:
> >
> > Hi,
> >
> > This is one of the problem that you don't know what is happening :
> >
> > 1) open a notebook and try %md ### this is a test
> > 2) Run it and get the expected results
> > 3) remove the interpreter using the interpreter settings page
> > 4) try running the paragraph again and get an error : "md interpreter not
> > found"
> > Log file will show:
> > ERROR [2015-08-17 11:02:22,782] ({qtp2095490653-45}
> > NotebookServer.java[runParagraph]:611) - Exception from run
> > org.apache.zeppelin.interpreter.InterpreterException: md interpreter not
> > found
> > at
> >
> org.apache.zeppelin.notebook.NoteInterpreterLoader.get(NoteInterpreterLoader.java:148)
> > at org.apache.zeppelin.notebook.Note.run(Note.java:267)
> > at
> >
> org.apache.zeppelin.socket.NotebookServer.runParagraph(NotebookServer.java:609)
> > at
> >
> org.apache.zeppelin.socket.NotebookServer.onMessage(NotebookServer.java:132)
> > at
> >
> org.apache.zeppelin.socket.NotebookSocket.onMessage(NotebookSocket.java:56)
> > at
> >
> org.eclipse.jetty.websocket.WebSocketConnectionRFC6455$WSFrameHandler.onFrame(WebSocketConnectionRFC6455.java:835)
> > at
> >
> org.eclipse.jetty.websocket.WebSocketParserRFC6455.parseNext(WebSocketParserRFC6455.java:349)
> > at
> >
> org.eclipse.jetty.websocket.WebSocketConnectionRFC6455.handle(WebSocketConnectionRFC6455.java:225)
> > at
> >
> org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:667)
> > at
> >
> org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52)
> > at
> >
> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
> > at
> >
> org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
> > at java.lang.Thread.run(Thread.java:745)
> >
> > 5) Add the interpreter back using the interpreter setting page
> > 6) try running the paragraph again
> > *still getting the same error both on page and in log*
> > 7) open a new notebook and try using md
> > 8) *everything works fine in the new notebook*
> >
> > So for some reason, after removing an interpreter and getting an error it
> > can't be re-attached to the notebook.
> > BTW, even restarting the server did not sole the problem
> > Eran
>

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