@jongyoul I saw you are working on applying new mechanism to all of the existing interpreters in ZEPPELIN-804 as subtasks. I think this bug was caused since interpreterGroup, interpreterName and interpreterClassName that I deactivated were not matched with group in here. So if you have a better way to solve this bug, just let me know :)

@AhyoungRyu I've tested and reproduced what you mentioned. Your change looks simple but it's not perfect because you cannot see spark interpreter in your interpreter list because interpreter-setting.json read interpreterGroup, interpreterName and interpreterClassName while initialisation. I'll submit a PR into your branch. Thanks for reporting this.

I don't know whether front-end uses RegisteredInterprerter. We need to find a way to indicate or mark which class is used in front and backend.

@jongyoul I see. That's why I can't see Spark interpreter in the list. Thanks ! Okay i'll check ASAP.

@AhyoungRyu Could you please add "[HOTFIX]" in a title?

@jongyoul Yeah I just added :)

@jongyoul I applied your patch and it works :)

@AhyoungRyu I've missed something. I submitted a PR, again.

@jongyoul That was also applied.

@AhyoungRyu Thanks.

@jongyoul Let's wait the travis then :)

@Leemoonsoo CI has been passed. Could you check this one ? :)

LGTM. I'll merge it asap.

@jongyoul Yeah sounds good.