[ZEPPELIN-2282] NPE on NotebookServer.java[onMessage]:356

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.7.0
• Fix Version/s: 0.7.1, 0.8.0
• Assignee: Lee Moon Soo
• Reporter: Lee Moon Soo
• Created: 17/Mar/17 21:40
• Updated: 18/Mar/17 05:26
• Resolved: 18/Mar/17 05:26

Description

In some circumstance, client send ticket null in it's message.
ZeppelinServer does not check null value.

ERROR [2017-03-15 17:52:11,554] ({qtp399931359-56} NotebookServer.java[onMessage]:356) - Can't handle message
java.lang.NullPointerException
	at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:936)
	at org.apache.zeppelin.ticket.TicketContainer.getTicket(TicketContainer.java:68)
	at org.apache.zeppelin.socket.NotebookServer.onMessage(NotebookServer.java:175)
	at org.apache.zeppelin.socket.NotebookSocket.onWebSocketText(NotebookSocket.java:59)
	at org.eclipse.jetty.websocket.common.events.JettyListenerEventDriver.onTextMessage(JettyListenerEventDriver.java:128)
	at org.eclipse.jetty.websocket.common.message.SimpleTextMessage.messageComplete(SimpleTextMessage.java:69)
	at org.eclipse.jetty.websocket.common.events.AbstractEventDriver.appendMessage(AbstractEventDriver.java:65)
	at org.eclipse.jetty.websocket.common.events.JettyListenerEventDriver.onTextFrame(JettyListenerEventDriver.java:122)
	at org.eclipse.jetty.websocket.common.events.AbstractEventDriver.incomingFrame(AbstractEventDriver.java:161)
	at org.eclipse.jetty.websocket.common.WebSocketSession.incomingFrame(WebSocketSession.java:309)
	at org.eclipse.jetty.websocket.common.extensions.ExtensionStack.incomingFrame(ExtensionStack.java:214)
	at org.eclipse.jetty.websocket.common.Parser.notifyFrame(Parser.java:220)
	at org.eclipse.jetty.websocket.common.Parser.parse(Parser.java:258)
	at org.eclipse.jetty.websocket.common.io.AbstractWebSocketConnection.readParse(AbstractWebSocketConnection.java:632)
	at org.eclipse.jetty.websocket.common.io.AbstractWebSocketConnection.onFillable(AbstractWebSocketConnection.java:480)
	at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:544)
	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
	at java.lang.Thread.run(Thread.java:745)

Issue Links

• links to: GitHub Pull Request #2153