Hi Florian, We have seen this behavior when the 10 quartz scheduler worker threads are waiting for some note paragraph to complete at this statement <https://github.com/apache/zeppelin/blob/v0.6.2/zeppelin-zengine/src/main/java/org/apache/zeppelin/notebook/Notebook.java#L645>. You can see what the quartz scheduler worker threads are doing in the jstack output of the ZeppelinServer process (look for DefaultQuartzScheduler_Worker). Can you post that part of the jstack output?
In some cases where the paragraphs generate JDBC queries, I have managed to unblock threads by killing the queries in the database. Regards, Prasad On Wed, Nov 9, 2016 at 1:41 AM, Florian Schulz <flo_schul...@web.de> wrote: > Hi, > > I have a problem with the scheduler. I have a notebook and I execute the > spark code in it every minute (with the cron scheduler). The scheduler > starts ten times and then it stops and do nothing anymore (in no notebook > at all). I use version 0.6.2 of Apache Zeppelin. Do you have any idea, why > this happens? I can reproduce this without a problem, but I can't find > anything in the logs. Hope you can help me. > > > Best regards > Florian >
