topic StackoverflowError while deserializing process variable in Alfresco Archive

StackoverflowError while deserializing process variable

swamy2156 — Wed, 23 Dec 2015 11:01:38 GMT

This issue coming now in our production systems. As per business need, we serialize xml documents as process variable. For small document, everything fine. But for document having 20K lines of content creating problem while deserializing the process variable(e.g., delegateTask.getVariables() ).I am

Re: StackoverflowError while deserializing process variable

swamy2156 — Wed, 23 Dec 2015 11:08:15 GMT

This is the Error stacktrace that I am seeing in logs….
Caused by: org.activiti.engine.ActivitiException: Error while evaluating expression: #{workflowTaskListner.notify(task)}
at org.activiti.engine.impl.el.JuelExpression.getValue(JuelExpression.java:57)
at org.activiti.engine.impl.bpmn.listener.ExpressionTaskListener.notify(ExpressionTaskListener.java:33)
at org.activiti.engine.impl.delegate.TaskListenerInvocation.invoke(TaskListenerInvocation.java:34)
at org.activiti.engine.impl.delegate.DelegateInvocation.proceed(DelegateInvocation.java:37)
at org.activiti.engine.impl.delegate.DefaultDelegateInterceptor.handleInvocation(DefaultDelegateInterceptor.java:25)
at org.activiti.engine.impl.persistence.entity.TaskEntity.fireEvent(TaskEntity.java:723)
… 60 more
Caused by: org.activiti.engine.impl.javax.el.ELException: java.lang.StackOverflowError
at org.activiti.engine.impl.javax.el.BeanELResolver.invoke(BeanELResolver.java:487)
at org.activiti.engine.impl.javax.el.CompositeELResolver.invoke(CompositeELResolver.java:397)
at org.activiti.engine.impl.juel.AstMethod.invoke(AstMethod.java:91)
at org.activiti.engine.impl.juel.AstMethod.eval(AstMethod.java:75)
at org.activiti.engine.impl.juel.AstEval.eval(AstEval.java:50)
at org.activiti.engine.impl.juel.AstNode.getValue(AstNode.java:26)
at org.activiti.engine.impl.juel.TreeValueExpression.getValue(TreeValueExpression.java:114)
at org.activiti.engine.impl.delegate.ExpressionGetInvocation.invoke(ExpressionGetInvocation.java:33)
at org.activiti.engine.impl.delegate.DelegateInvocation.proceed(DelegateInvocation.java:37)
at org.activiti.engine.impl.delegate.DefaultDelegateInterceptor.handleInvocation(DefaultDelegateInterceptor.java:25)
at org.activiti.engine.impl.el.JuelExpression.getValue(JuelExpression.java:48)
… 65 more
Caused by: java.lang.StackOverflowError
at java.io.ObjectInputStream$PeekInputStream.read(ObjectInputStream.java:2310)
at java.io.ObjectInputStream$PeekInputStream.readFully(ObjectInputStream.java:2323)
at java.io.ObjectInputStream$BlockDataInputStream.readInt(ObjectInputStream.java:2818)
at java.io.ObjectInputStream.readHandle(ObjectInputStream.java:1452)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1511)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1771)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
—————–
n last 4 lines repeated till end of exception.

Re: StackoverflowError while deserializing process variable

swamy2156 — Wed, 23 Dec 2015 11:11:46 GMT

BTW, I am using Activiti v5.17 & Oracle v11G & Jdk v1.7 and exceptions in log I am seeing are as follows….

Caused by: org.activiti.engine.ActivitiException: Error while evaluating expression: #{workflowTaskListner.notify(task)}
at org.activiti.engine.impl.el.JuelExpression.getValue(JuelExpression.java:57)
at org.activiti.engine.impl.bpmn.listener.ExpressionTaskListener.notify(ExpressionTaskListener.java:33)
at org.activiti.engine.impl.delegate.TaskListenerInvocation.invoke(TaskListenerInvocation.java:34)
at org.activiti.engine.impl.delegate.DelegateInvocation.proceed(DelegateInvocation.java:37)
at org.activiti.engine.impl.delegate.DefaultDelegateInterceptor.handleInvocation(DefaultDelegateInterceptor.java:25)
at org.activiti.engine.impl.persistence.entity.TaskEntity.fireEvent(TaskEntity.java:723)
… 60 more
Caused by: org.activiti.engine.impl.javax.el.ELException: java.lang.StackOverflowError
at org.activiti.engine.impl.javax.el.BeanELResolver.invoke(BeanELResolver.java:487)
at org.activiti.engine.impl.javax.el.CompositeELResolver.invoke(CompositeELResolver.java:397)
at org.activiti.engine.impl.juel.AstMethod.invoke(AstMethod.java:91)
at org.activiti.engine.impl.juel.AstMethod.eval(AstMethod.java:75)
at org.activiti.engine.impl.juel.AstEval.eval(AstEval.java:50)
at org.activiti.engine.impl.juel.AstNode.getValue(AstNode.java:26)
at org.activiti.engine.impl.juel.TreeValueExpression.getValue(TreeValueExpression.java:114)
at org.activiti.engine.impl.delegate.ExpressionGetInvocation.invoke(ExpressionGetInvocation.java:33)
at org.activiti.engine.impl.delegate.DelegateInvocation.proceed(DelegateInvocation.java:37)
at org.activiti.engine.impl.delegate.DefaultDelegateInterceptor.handleInvocation(DefaultDelegateInterceptor.java:25)
at org.activiti.engine.impl.el.JuelExpression.getValue(JuelExpression.java:48)
… 65 more
Caused by: java.lang.StackOverflowError
at java.io.ObjectInputStream$PeekInputStream.read(ObjectInputStream.java:2310)
at java.io.ObjectInputStream$PeekInputStream.readFully(ObjectInputStream.java:2323)
at java.io.ObjectInputStream$BlockDataInputStream.readInt(ObjectInputStream.java:2818)
at java.io.ObjectInputStream.readHandle(ObjectInputStream.java:1452)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1511)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1771)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
………and last 4 lines repeated for 250 times till end of trace.

Re: StackoverflowError while deserializing process variable

trademak — Thu, 24 Dec 2015 08:09:51 GMT

Hi Swamy,

How is the XML document stored as a variable? Do you store it as text/string or do you store the XML Document object?

Best regards,

Re: StackoverflowError while deserializing process variable

swamy2156 — Thu, 24 Dec 2015 08:24:19 GMT

Storing xml document as object.

Re: StackoverflowError while deserializing process variable

trademak — Wed, 30 Dec 2015 12:01:13 GMT

Ok, it would be better to store an XML document as a String with the XML as text. This would prevent serialization and deserialization issues.

Best regards,