hi, moon:
After change some settings and restarting interpreter, the scheduler of
interpreter will be terminated and the RemoteInterpreterServer process
should be stopped too. But if the RemoteInterpreterServer didn't shutdown
as expected, an exception named "Scheduler already terminated" will be
thrown when we run paragraphs using this interpreter (such as spark). Then
restart the zeppelin server seems the only way to solve the problem.
This problem has already happen several times, but still have no idea how
to stable reproduct it. I was thinking that if we can restart the
RemoteInterpreterServer when we catch this Exception?
Do you have any idea to solve this problem?
By the way, The detail error info is like that:
INFO [2015-09-06 10:21:47,487] ({qtp1633200777-7462}
NotebookServer.java[onMessage]:112) - RECEIVE << RUN_PARAGRAPH
INFO [2015-09-06 10:21:47,493] ({qtp1633200777-7462}
NotebookServer.java[broadcast]:264) - SEND >> NOTE
ERROR [2015-09-06 10:21:47,495] ({qtp1633200777-7462}
NotebookServer.java[runParagraph]:640) - Exception from run
java.lang.RuntimeException: Scheduler already terminated
at
org.apache.zeppelin.scheduler.RemoteScheduler.submit(RemoteScheduler.java:124)
at org.apache.zeppelin.notebook.Note.run(Note.java:282)
at
org.apache.zeppelin.socket.NotebookServer.runParagraph(NotebookServer.java:638)
at
org.apache.zeppelin.socket.NotebookServer.onMessage(NotebookServer.java:137)
at
org.apache.zeppelin.socket.NotebookSocket.onMessage(NotebookSocket.java:56)
at
org.eclipse.jetty.websocket.WebSocketConnectionRFC6455$WSFrameHandler.onFrame(WebSocketConnectionRFC6455.java:835)
at
org.eclipse.jetty.websocket.WebSocketParserRFC6455.parseNext(WebSocketParserRFC6455.java:349)
at
org.eclipse.jetty.websocket.WebSocketConnectionRFC6455.handle(WebSocketConnectionRFC6455.java:225)
at
org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:667)
at
org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52)
at
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
at
org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
at java.lang.Thread.run(Thread.java:745)
