[ZEPPELIN-2484] NullPointerException in addNewParagraphIfLastParagraphIsExecuted

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 0.8.0
• Assignee: Benoy Antony
• Reporter: Benoy Antony
• Created: 02/May/17 22:10
• Updated: 05/May/17 17:37
• Resolved: 05/May/17 17:36

Description

A NullPointerException is thrown for the last paragraph if the text is null.

ERROR [2017-05-02 14:24:48,052] (

{qtp75457651-79}

NotebookServer.java[onMessage]:379) - Can't handle message
java.lang.NullPointerException
at org.apache.zeppelin.socket.NotebookServer.addNewParagraphIfLastParagraphIsExecuted(NotebookServer.java:1714)
at org.apache.zeppelin.socket.NotebookServer.persistAndExecuteSingleParagraph(NotebookServer.java:1742)
at org.apache.zeppelin.socket.NotebookServer.runAllParagraphs(NotebookServer.java:1642)
at org.apache.zeppelin.socket.NotebookServer.onMessage(NotebookServer.java:290)
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 #2310