NullPointerException halting jBPM process execution
Issue
Some of our jBPM process instances are stopped in the middle of execution. In the server.log file we see the following ERROR:
ERROR (ExceptionHandler) exception thrown in process process1 in transition to to_node3 - halting this process
java.lang.NullPointerException
at java.io.ByteArrayInputStream.<init>(ByteArrayInputStream.java:89)
at org.jbpm.context.exe.converter.SerializableToByteArrayConverter.revert(SerializableToByteArrayConverter.java:81)
at org.jbpm.context.exe.VariableInstance.getValue(VariableInstance.java:132)
at org.jbpm.context.exe.VariableContainer.getVariablesLocally(VariableContainer.java:116)
at org.jbpm.context.exe.VariableContainer.getVariables(VariableContainer.java:101)
at org.jbpm.context.exe.ContextInstance.getVariables(ContextInstance.java:107)
at org.jbpm.graph.action.Script.createInputMap(Script.java:97)
at org.jbpm.graph.action.Script.eval(Script.java:78)
at org.jbpm.graph.action.Script.execute(Script.java:65)
at org.jbpm.graph.def.GraphElement.executeActionImpl(GraphElement.java:300)
at org.jbpm.graph.def.GraphElement.executeAction(GraphElement.java:267)
at org.jbpm.graph.def.GraphElement.executeActions(GraphElement.java:240)
at org.jbpm.graph.def.GraphElement.fireAndPropagateEvent(GraphElement.java:206)
at org.jbpm.graph.def.GraphElement.fireEvent(GraphElement.java:188)
at org.jbpm.graph.def.Transition.take(Transition.java:150)
at org.jbpm.graph.def.Node.leave(Node.java:450)
...
Environment
- JBoss Enterprise SOA Platform (SOA-P) 5.1.0
- jBPM 3.2.10
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