[TAVERNA-871] Race condition: occassional NullPointerException in DispatchStackImpl

• Type: Bug
• Status: To Do
• Priority: Major
• Resolution: Unresolved
• Fix Version/s: engine 3.2.0
• Component/s: Taverna Engine
• Assignee: Unassigned
• Reporter: Stian Soiland-Reyes
• Created: 14/Aug/15 12:50
• Updated: 09/Jun/16 18:10

Description

Raised by Javier Rojas Balderrama on users:

I'm executing some workflows by command line and from time to time the execution freezes so I have to start over the execution. The log associated to this is bellow. Is this only a command line issue or a general behaviour?

INFO  2015-07-29 08:49:11,170 (de.uni_luebeck.inb.knowarc.usecases.invocation.local.LocalUseCaseInvocation:116) - mainTempDirectory is /tmp
INFO  2015-07-29 08:49:11,170 (de.uni_luebeck.inb.knowarc.usecases.invocation.local.LocalUseCaseInvocation:117) - Using tempDir /tmp/usecase1293979972903664991dir
INFO  2015-07-29 08:49:11,170 (net.sf.taverna.t2.activities.externaltool.ExternalToolActivity:237) - Run id is cddff932-9804-4a55-bef7-4679eab931c5
INFO  2015-07-29 08:49:11,170 (de.uni_luebeck.inb.knowarc.usecases.invocation.local.LocalUseCaseInvocation:351) - cmds[0] = /bin/sh
INFO  2015-07-29 08:49:11,170 (de.uni_luebeck.inb.knowarc.usecases.invocation.local.LocalUseCaseInvocation:351) - cmds[1] = -c
INFO  2015-07-29 08:49:11,170 (de.uni_luebeck.inb.knowarc.usecases.invocation.local.LocalUseCaseInvocation:351) - cmds[2] = sleep 0
INFO  2015-07-29 08:49:11,170 (de.uni_luebeck.inb.knowarc.usecases.invocation.local.LocalUseCaseInvocation:353) - Command is sleep 0 in directory /tmp/usecase1293979972903664991dir
WARN  2015-07-29 08:49:11,173 (net.sf.taverna.t2.workflowmodel.processor.dispatch.layers.Invoke:236) - Failed (INVOCATION) invoking net.sf.taverna.t2.activities.externaltool.ExternalToolActivity@415ce54f for job DispatchJobEvent facade0:control-0045x0035:S_1567[]: Uncaught exception while invoking net.sf.taverna.t2.activities.externaltool.ExternalToolActivity@415ce54f
java.lang.NullPointerException
	at net.sf.taverna.t2.workflowmodel.processor.dispatch.impl.DispatchStackImpl.satisfyConditions(DispatchStackImpl.java:188)
	at net.sf.taverna.t2.workflowmodel.impl.ProcessorImpl$2.finishedWith(ProcessorImpl.java:176)
	at net.sf.taverna.t2.workflowmodel.processor.dispatch.impl.DispatchStackImpl$TopLayer.sendCachePurge(DispatchStackImpl.java:313)
	at net.sf.taverna.t2.workflowmodel.processor.dispatch.impl.DispatchStackImpl$TopLayer.receiveResult(DispatchStackImpl.java:281)
	at net.sf.taverna.t2.workflowmodel.processor.dispatch.layers.Parallelize.receiveResult(Parallelize.java:165)
	at net.sf.taverna.t2.workflowmodel.processor.dispatch.AbstractDispatchLayer.receiveResult(AbstractDispatchLayer.java:85)
	at net.sf.taverna.t2.workflowmodel.processor.dispatch.AbstractErrorHandlerLayer.receiveResult(AbstractErrorHandlerLayer.java:136)
	at net.sf.taverna.t2.workflowmodel.processor.dispatch.AbstractErrorHandlerLayer.receiveResult(AbstractErrorHandlerLayer.java:136)
	at net.sf.taverna.t2.workflowmodel.processor.dispatch.AbstractDispatchLayer.receiveResult(AbstractDispatchLayer.java:85)
	at net.sf.taverna.t2.workflowmodel.processor.dispatch.layers.Invoke$InvokeCallBack.receiveResult(Invoke.java:352)
	at net.sf.taverna.t2.activities.externaltool.ExternalToolActivity$1.run(ExternalToolActivity.java:272)
	at java.lang.Thread.run(Thread.java:745)
ERROR 2015-07-29 08:49:11,174 (net.sf.taverna.t2.workflowmodel.processor.dispatch.AbstractErrorHandlerLayer:200) - Could not find any active jobs for facade0:control-0045x0035:S_1567

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