Hello,
It looks like a bug which occurs without any property in a
interpreter-setting.json.
Could you please add properties section?
[
{
"group": "org",
"name": "simple",
"className": "simple.SimpleInterpreter", properties: {}}
]
If it works, please tell me. I'll make a PR for this bug.
Hope this help,
JL
On Monday, 27 June 2016, Yunjian <[email protected]> wrote:
> Hi all,
>
> Recently I am trying to write my own interpreter for scala, using
> Zeppelin-0.6.0-snapshot built from source code.
>
> I followed the instructions in
> https://zeppelin.apache.org/docs/0.6.0-SNAPSHOT/development/writingzeppelininterpreter.html,
> but I failed to make my interpreter work. So then I tried to write a much
> simpler interpreter (doing nothing but print messages only in each
> overriding methods) and I still failed to make the interpreter work. I got
> confused and didn't know* if I missed some important steps :( . *Any help
> will be appreciated.
>
> Here are the steps how I wrote my interpreter:
>
> 1. Write a java file named SimpleInterpreter.java, design a class named
> SimpleInterpreter and the class extends Interpreter provided by Zeppelin.
> Then I implement the constructor and 8 methods: open(), close(),
> interpreter(), cancel(), getProgress(), getFormType(), getScheduler(),
> completion().
>
> 2. Compile the project using sbt. I think it's OK to compile the code
> using sbt instead of mvn. The important thing is to get the jar anyway.
> Here the SimpleInterpreter doesn't have other dependencies except Zeppelin
> Interpreter.
>
> 3. Make a directory named simple in [Zeppelin-Home]/interpreter/, copy the
> jar generated by sbt to the new directory. The jar contains
> SimpleInterpreter.class only. And no other jars need to be copied.
>
> 4. Create a new file named interpreter-setting.json in the new directory
> and write three key-value pairs:
> "group": "org",
> "name": "simple",
> "className": "simple.SimpleInterpreter"
> (Here I have a question that why "org" instead of "simple" is shown in the
> option box of "Interpreter group" when I create my interpreter in web UI.)
>
> 5. add "simple.SimpleInterpreter" in the value of "zeppelin.interpreters"
> in zeppelin-site.xml under [Zeppelin-Home]/conf.
>
> I attach related files mentioned above in this email.
>
> But then after I restart the zeppelin daemon and try to run any scripts
> using my interpreter, I get no results except a small Error. And if I look
> into the log file, I get the some exceptions and it seems failed to find my
> interpreter. Details can be seen in the attachments.
>
> Sorry to make a long email. And hope anyone could offer me some help.
>
> Bests,
> ZHAO Yunjian
>
> Research Assistant, The Chinese University of Hong Kong
> ᐧ
>
--
이종열, Jongyoul Lee, 李宗烈
http://madeng.net
