Could you paste the log ?
Best Regard, Jeff Zhang From: Mark Libucha <mlibu...@gmail.com<mailto:mlibu...@gmail.com>> Reply-To: "users@zeppelin.apache.org<mailto:users@zeppelin.apache.org>" <users@zeppelin.apache.org<mailto:users@zeppelin.apache.org>> Date: Friday, October 7, 2016 at 12:11 AM To: "users@zeppelin.apache.org<mailto:users@zeppelin.apache.org>" <users@zeppelin.apache.org<mailto:users@zeppelin.apache.org>> Subject: Re: No active SparkContext black hole Actually, it's stuck in the Running state. Trying to cancel it causes the No active SparkContext to appear in the log. Seems like a bug. On Thu, Oct 6, 2016 at 9:06 AM, Mark Libucha <mlibu...@gmail.com<mailto:mlibu...@gmail.com>> wrote: Hello again, On "longer" running jobs (I'm using yarn-client mode), I sometimes get RPC timeouts. Seems like Zeppelin is losing connectivity with the Spark cluster. I can deal with that. But my notebook has sections stuck in the "Cancel" state, and I can't get them out. When I re-click on cancel, I see "No active SparkContext" in the log. But I can't reload a new instance of the notebook, or kill the one that's stuck, without restarting all of zeppelin. Suggestions? Thanks, Mark
