RE: using Apache Spark standalone on a server for a class/multiple users, db.lck does not get removed

2017-06-29 Thread Mahesh Sawaiker
You could copy the spark folder to home directory of each user and set a different Spark home for each one..not sure what derby is used for, but you could try using mysql instead(if its for the hive metastore) From: Robert Kudyba [mailto:rkud...@fordham.edu] Sent: Wednesday, June 28, 2017 8:25

using Apache Spark standalone on a server for a class/multiple users, db.lck does not get removed

2017-06-28 Thread Robert Kudyba
We have a Big Data class planned and we’d like students to be able to start spark-shell or pyspark as their own user. However the Derby database locks the process from starting as another user: -rw-r--r-- 1 myuser staff 38 Jun 28 10:40 db.lck And these errors appear: ERROR PoolWatchThread: