Hi Zhang/others- We are using Zeppelin with Livy interpreter to run spark jobs.We are using YARN client mode at the moment as we have some challenges going to cluster mode. So Zeppelin and Livy servers are running inside individual docker containers. So at times when we have high number of concurrent users , any command that ran on Zeppelin goes to PENDING state and Zeppelin is stuck for all the users.No peculiar exceptions to be seen on Livy or Zeppelin server logs.One I restart Zeppelin servers, it starts to work fine.We dont want to restart a live service intraday and we foresee the need to add more users in future.
-- *Thanks and Regards,* *Bicky Ealias*
