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List:       synapse-dev
Subject:    [jira] [Resolved] (SYNAPSE-901) Concurrency issue at Clone Mediator
From:       "Isuru Udana Loku Narangoda (JIRA)" <jira () apache ! org>
Date:       2016-10-02 14:25:20
Message-ID: JIRA.12601229.1343919978000.717849.1475418320489 () Atlassian ! JIRA
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     [ https://issues.apache.org/jira/browse/SYNAPSE-901?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel \
]

Isuru Udana Loku Narangoda resolved SYNAPSE-901.
------------------------------------------------
       Resolution: Fixed
    Fix Version/s:     (was: FUTURE)
                   3.0

> Concurrency issue at Clone Mediator
> -----------------------------------
> 
> Key: SYNAPSE-901
> URL: https://issues.apache.org/jira/browse/SYNAPSE-901
> Project: Synapse
> Issue Type: Bug
> Components: Core
> Affects Versions: 2.1
> Environment: Any
> Reporter: Malith Dhanushka
> Assignee: Isuru Udana Loku Narangoda
> Priority: Blocker
> Fix For: 3.0
> 
> Attachments: SYNAPSE-901.patch
> 
> 
> This issue is very much identical to the issue SYNAPSE-897. Clone mediator gives \
> following exception when messages are processed in parallel,  [SynapseWorker-2] \
> ERROR MediatorWorker Unexpected error executing task/async inject \
> java.util.EmptyStackException  at java.util.Stack.peek(Stack.java:85)
> 	at org.apache.synapse.util.xpath.SynapseXPathVariableContext.getVariableValue(SynapseXPathVariableContext.java:157)
>   at org.jaxen.ContextSupport.getVariableValue(ContextSupport.java:215)
> 	at org.jaxen.Context.getVariableValue(Context.java:196)
> 	at org.jaxen.expr.DefaultVariableReferenceExpr.evaluate(DefaultVariableReferenceExpr.java:103)
>   at org.jaxen.expr.DefaultXPathExpr.asList(DefaultXPathExpr.java:102)
> 	at org.jaxen.BaseXPath.selectNodesForContext(BaseXPath.java:677)
> 	at org.jaxen.BaseXPath.selectNodes(BaseXPath.java:216)
> 	at org.jaxen.BaseXPath.evaluate(BaseXPath.java:175)
> 	at org.apache.synapse.util.xpath.SynapseXPath.stringValueOf(SynapseXPath.java:172)
> 	at org.apache.synapse.mediators.transform.HeaderMediator.mediate(HeaderMediator.java:79)
>   at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:60)
>   at org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:114)
>   at org.apache.synapse.mediators.MediatorWorker.run(MediatorWorker.java:69)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>   at java.lang.Thread.run(Thread.java:662)
> Exception in thread "SynapseWorker-2" java.lang.NullPointerException
> 	at org.apache.synapse.FaultHandler.handleFault(FaultHandler.java:78)
> 	at org.apache.synapse.mediators.MediatorWorker.run(MediatorWorker.java:90)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>   at java.lang.Thread.run(Thread.java:662)



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