java.lang.NullPointerException: null

GitHub | jrmartin | 9 months ago
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  1. 0

    GitHub comment 509#231377585

    GitHub | 9 months ago | jrmartin
    java.lang.NullPointerException: null
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    NPE when undeploying app with JPA and StdDateFormat

    GitHub | 1 year ago | ikeyat
    java.lang.NullPointerException: null
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Root Cause Analysis

  1. java.lang.NullPointerException

    null

    at java.util.concurrent.ConcurrentHashMap.hash()
  2. Java RT
    ConcurrentHashMap.remove
    1. java.util.concurrent.ConcurrentHashMap.hash(ConcurrentHashMap.java:333)
    2. java.util.concurrent.ConcurrentHashMap.remove(ConcurrentHashMap.java:1175)
    2 frames
  3. org.geppetto.frontend
    WebsocketConnection.onOpen
    1. org.geppetto.frontend.controllers.ConnectionsManager.removeConnection(ConnectionsManager.java:96)
    2. org.geppetto.frontend.controllers.ConnectionsManager.purgeLostConnections(ConnectionsManager.java:82)
    3. org.geppetto.frontend.controllers.ConnectionsManager.addConnection(ConnectionsManager.java:54)
    4. org.geppetto.frontend.controllers.WebsocketConnection.onOpen(WebsocketConnection.java:122)
    4 frames
  4. org.apache.catalina
    StreamInbound.onUpgradeComplete
    1. org.apache.catalina.websocket.StreamInbound.onUpgradeComplete(StreamInbound.java:240)
    1 frame
  5. Grizzly HTTP
    JIoEndpoint$SocketProcessor.run
    1. org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:603)
    2. org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
    2 frames
  6. Java RT
    ThreadPoolExecutor$Worker.run
    1. java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    2. java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    2 frames