java.lang.NullPointerException

JIRA | Eric Tschetter | 7 years ago
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  1. 0

    10/06/21 13:05:26 ERROR pages.IndexServlet: Exception while attempting to cancel flow 'flow-name-here'. java.lang.NullPointerException at azkaban.common.utils.Utils.stackTrace(Utils.java:346) at azkaban.app.Scheduler.sendErrorEmail(Scheduler.java:430) at azkaban.app.Scheduler.access$900(Scheduler.java:62) at azkaban.app.Scheduler$ScheduledRunnable$1.completed(Scheduler.java:620) at azkaban.flow.IndividualJobExecutableFlow.cancel(IndividualJobExecutableFlow.java:205) at azkaban.web.pages.IndexServlet.cancelJob(IndexServlet.java:100) at azkaban.web.pages.IndexServlet.doPost(IndexServlet.java:82) at javax.servlet.http.HttpServlet.service(HttpServlet.java:637) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454) at java.lang.Thread.run(Thread.java:619) This happens when canceling a flow because there is no Exception to generate a stacktrace for.

    JIRA | 7 years ago | Eric Tschetter
    java.lang.NullPointerException
  2. 0

    10/06/21 13:05:26 ERROR pages.IndexServlet: Exception while attempting to cancel flow 'flow-name-here'. java.lang.NullPointerException at azkaban.common.utils.Utils.stackTrace(Utils.java:346) at azkaban.app.Scheduler.sendErrorEmail(Scheduler.java:430) at azkaban.app.Scheduler.access$900(Scheduler.java:62) at azkaban.app.Scheduler$ScheduledRunnable$1.completed(Scheduler.java:620) at azkaban.flow.IndividualJobExecutableFlow.cancel(IndividualJobExecutableFlow.java:205) at azkaban.web.pages.IndexServlet.cancelJob(IndexServlet.java:100) at azkaban.web.pages.IndexServlet.doPost(IndexServlet.java:82) at javax.servlet.http.HttpServlet.service(HttpServlet.java:637) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454) at java.lang.Thread.run(Thread.java:619) This happens when canceling a flow because there is no Exception to generate a stacktrace for.

    JIRA | 7 years ago | Eric Tschetter
    java.lang.NullPointerException
  3. 0

    Getting a nullpointer exception when switching displayables in J2ME

    Stack Overflow | 6 years ago | Pallinder
    java.lang.NullPointerException: 0 at javax.microedition.lcdui.Display$ChameleonTunnel.callScreenListener(), bci=46 at com.sun.midp.chameleon.layers.SoftButtonLayer.processCommand(), bci=74 at com.sun.midp.chameleon.layers.SoftButtonLayer.soft1(), bci=37 at com.sun.midp.chameleon.layers.SoftButtonLayer.keyInput(), bci=36 at com.sun.midp.chameleon.CWindow.keyInput(), bci=38 at javax.microedition.lcdui.Display$DisplayEventConsumerImpl.handleKeyEvent(), bci=17 at com.sun.midp.lcdui.DisplayEventListener.process(), bci=277 at com.sun.midp.events.EventQueue.run(), bci=179
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  5. 0

    J2ME (Java) - Null Pointer Exception caught in Display Class

    Stack Overflow | 6 years ago | Tom
    java.lang.NullPointerException: 0 at javax.microedition.lcdui.Display$ChameleonTunnel.callScreenListener(), bci=46 at com.sun.midp.chameleon.layers.SoftButtonLayer.processCommand(), bci=74 at com.sun.midp.chameleon.layers.SoftButtonLayer.soft1(), bci=37 at com.sun.midp.chameleon.layers.SoftButtonLayer.keyInput(), bci=36 at com.sun.midp.chameleon.CWindow.keyInput(), bci=38 at javax.microedition.lcdui.Display$DisplayEventConsumerImpl.handleKeyEvent(), bci=17 at com.sun.midp.lcdui.DisplayEventListener.process(), bci=277 at com.sun.midp.events.EventQueue.run(), bci=179
  6. 0

    Cloud Foundry v2 in Grails

    Stack Overflow | 2 years ago | angelo087
    java.lang.NullPointerException: Cannot invoke method getAt() on null object

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    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at azkaban.common.utils.Utils.stackTrace()
    2. azkaban.common.utils
      Utils.stackTrace
      1. azkaban.common.utils.Utils.stackTrace(Utils.java:346)
      1 frame
    3. azkaban.app
      Scheduler$ScheduledRunnable$1.completed
      1. azkaban.app.Scheduler.sendErrorEmail(Scheduler.java:430)
      2. azkaban.app.Scheduler.access$900(Scheduler.java:62)
      3. azkaban.app.Scheduler$ScheduledRunnable$1.completed(Scheduler.java:620)
      3 frames
    4. Azkaban
      IndividualJobExecutableFlow.cancel
      1. azkaban.flow.IndividualJobExecutableFlow.cancel(IndividualJobExecutableFlow.java:205)
      1 frame
    5. azkaban.web.pages
      IndexServlet.doPost
      1. azkaban.web.pages.IndexServlet.cancelJob(IndexServlet.java:100)
      2. azkaban.web.pages.IndexServlet.doPost(IndexServlet.java:82)
      2 frames
    6. JavaServlet
      HttpServlet.service
      1. javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
      2. javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
      2 frames
    7. Glassfish Core
      CoyoteAdapter.service
      1. org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
      2. org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
      3. org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
      4. org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
      5. org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
      6. org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
      7. org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
      8. org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
      8 frames
    8. Grizzly HTTP
      JIoEndpoint$Worker.run
      1. org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849)
      2. org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
      3. org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454)
      3 frames
    9. Java RT
      Thread.run
      1. java.lang.Thread.run(Thread.java:619)
      1 frame