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  1. camunda BPM
  2. CAM-10580

Cryptic NullPointerException when ending Sub Process with output parameters, but no outgoing arrows

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    Details

    • Type: Bug Report
    • Status: Ready
    • Priority: L3 - Default
    • Resolution: Unresolved
    • Affects Version/s: 7.11.0, 7.12.0
    • Fix Version/s: None
    • Component/s: None
    • Labels:
      None
    • Environment:
      Windows 10 64bit
      Camunda Modeller: 3.1.2 Windows x64
      Camunda BPM Tomcat 7.11.0

      Description

      Given:
      Any BPMN process with a Sub Process with output parameters, but no outgoing arrows.

      When:
      The process is started.

      Then:
      The engine throws an exception:

      Runtime result:
      05-Jul-2019 12:30:55.904 SEVERE [http-nio-8080-exec-7] org.camunda.commons.logging.BaseLogger.logError ENGINE-16004 Exception while closing command context: null
       java.lang.NullPointerException
              at org.camunda.bpm.engine.impl.core.variable.mapping.OutputParameter.execute(OutputParameter.java:52)
              at org.camunda.bpm.engine.impl.core.variable.mapping.IoParameter.execute(IoParameter.java:51)
              at org.camunda.bpm.engine.impl.core.variable.mapping.IoMapping.executeOutputParameters(IoMapping.java:45)
              at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.destroy(ExecutionEntity.java:531)
              at org.camunda.bpm.engine.impl.pvm.runtime.operation.PvmAtomicOperationProcessEnd.eventNotificationsCompleted(PvmAtomicOperationProcessEnd.java:83)
              at org.camunda.bpm.engine.impl.pvm.runtime.operation.PvmAtomicOperationProcessEnd.eventNotificationsCompleted(PvmAtomicOperationProcessEnd.java:33)
              at org.camunda.bpm.engine.impl.core.operation.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:66)
      (...)
      

      Expected:

      The output parameters are executed without throwing an exception.

      Note:

      • Attached are full logs and an example process.
      • In the case of no output parameters, it works fine, without an exception.

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            People

            Assignee:
            thorben.lindhauer Thorben Lindhauer
            Reporter:
            bramvonk Bram Vonk
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              Dates

              Created:
              Updated: