Hi:
I have installed the zeppelin notebook in the ambari cluster, and it used to working well before, but from these days, it always not responsed, but when i restart the zeppelin service it will come back.
I checked the zeppelin log and found that it shows the socket error repeated. does anyone meet this error?
ERROR [2016-07-04 14:42:35,388] ({pool-1-thread-27} NotebookServer.java[broadcast]:306) - socket error
java.io.IOException: closedOut 1000:Idle for 300051ms > 300000ms
at org.eclipse.jetty.websocket.WebSocketConnectionRFC6455$WSFrameConnection.sendMessage(WebSocketConnectionRFC6455.java:437)
at org.apache.zeppelin.socket.NotebookSocket.send(NotebookSocket.java:69)
at org.apache.zeppelin.socket.NotebookServer.broadcast(NotebookServer.java:304)
at org.apache.zeppelin.socket.NotebookServer.broadcastNote(NotebookServer.java:376)
at org.apache.zeppelin.socket.NotebookServer$ParagraphListenerImpl.afterStatusChange(NotebookServer.java:1099)
at org.apache.zeppelin.scheduler.Job.setStatus(Job.java:150)
at org.apache.zeppelin.scheduler.RemoteScheduler$JobRunner.afterStatusChange(RemoteScheduler.java:408)
at org.apache.zeppelin.scheduler.RemoteScheduler$JobStatusPoller.getStatus(RemoteScheduler.java:272)
at org.apache.zeppelin.scheduler.RemoteScheduler$JobRunner.run(RemoteScheduler.java:341)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
