Hi Jagath, Can you debug and see whey the stack becomes empty? Thats a serious problem. Stack should be become empty here.
Checking whether the stack is empty will stop the error log, but it doesn't fix the actual problem here. On Wed, Jul 8, 2015 at 10:50 AM, Sameera Jayasoma <[email protected]> wrote: > I understand, but we need to understand why that stack becomes empty. > AFAIK, if we follow the proper APIs, stack should not become empty > > On Tue, Jul 7, 2015 at 5:47 PM, Kasun Indrasiri <[email protected]> wrote: > >> Yeah, we should always check for an empty stack. >> >> On Tue, Jul 7, 2015 at 5:17 PM, Malaka Silva <[email protected]> wrote: >> >>> I think we need to check isEmpty as well. >>> >>> On Tue, Jul 7, 2015 at 3:41 PM, Jagath Sisirakumara Ariyarathne < >>> [email protected]> wrote: >>> >>>> Hi, >>>> >>>> I am working on [1] and found that the cause of the exception mentioned >>>> below is in the code segment in >>>> org.wso2.carbon.context.internal.CarbonContextDataHolder >>>> in carbon.utils. >>>> >>>> public void endTenantFlow() { >>>> >>>> Stack<CarbonContextDataHolder> carbonContextDataHolders = >>>> parentContextHolderStack.get(); >>>> if (carbonContextDataHolders != null) { >>>> currentContextHolder.set(carbonContextDataHolders.pop()); >>>> } >>>> } >>>> >>>> *Exception :* >>>> >>>> java.util.EmptyStackException >>>> at java.util.Stack.peek(Stack.java:102) >>>> at java.util.Stack.pop(Stack.java:84) >>>> at >>>> org.wso2.carbon.context.internal.CarbonContextDataHolder.endTenantFlow(CarbonContextDataHolder.java:1291) >>>> at >>>> org.wso2.carbon.context.PrivilegedCarbonContext.endTenantFlow(PrivilegedCarbonContext.java:75) >>>> at >>>> org.wso2.carbon.ntask.core.impl.TaskQuartzJobAdapter.execute(TaskQuartzJobAdapter.java:69) >>>> at org.quartz.core.JobRunShell.run(JobRunShell.java:213) >>>> at >>>> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) >>>> at java.util.concurrent.FutureTask.run(FutureTask.java:262) >>>> at >>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) >>>> at >>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) >>>> at java.lang.Thread.run(Thread.java:745) >>>> >>>> Issue occurs when it tries to pop elements from carbonContextDataHolders >>>> stack when it is empty. >>>> >>>> Is it a possible scenario that this stack being empty and shouldn't it be >>>> handled at CarbonContextDataHolder (check isEmpty in stack)? >>>> >>>> [1] - https://wso2.org/jira/browse/ESBJAVA-3832 >>>> >>>> Thanks >>>> >>>> -- >>>> Jagath Ariyarathne >>>> Technical Lead >>>> WSO2 Inc. http://wso2.com/ >>>> Email: [email protected] >>>> Mob : +94 77 386 7048 >>>> >>>> >>> >>> >>> -- >>> >>> Best Regards, >>> >>> Malaka Silva >>> Senior Tech Lead >>> M: +94 777 219 791 >>> Tel : 94 11 214 5345 >>> Fax :94 11 2145300 >>> Skype : malaka.sampath.silva >>> LinkedIn : http://www.linkedin.com/pub/malaka-silva/6/33/77 >>> Blog : http://mrmalakasilva.blogspot.com/ >>> >>> WSO2, Inc. >>> lean . enterprise . middleware >>> http://www.wso2.com/ >>> http://www.wso2.com/about/team/malaka-silva/ >>> <http://wso2.com/about/team/malaka-silva/> >>> >>> Save a tree -Conserve nature & Save the world for your future. Print >>> this email only if it is absolutely necessary. >>> >>> _______________________________________________ >>> Dev mailing list >>> [email protected] >>> http://wso2.org/cgi-bin/mailman/listinfo/dev >>> >>> >> >> >> -- >> Kasun Indrasiri >> Software Architect >> WSO2, Inc.; http://wso2.com >> lean.enterprise.middleware >> >> cell: +94 77 556 5206 >> Blog : http://kasunpanorama.blogspot.com/ >> >> _______________________________________________ >> Dev mailing list >> [email protected] >> http://wso2.org/cgi-bin/mailman/listinfo/dev >> >> > > > -- > Sameera Jayasoma, > Software Architect, > > WSO2, Inc. (http://wso2.com) > email: [email protected] > blog: http://blog.sameera.org > twitter: https://twitter.com/sameerajayasoma > flickr: http://www.flickr.com/photos/sameera-jayasoma/collections > Mobile: 0094776364456 > > Lean . Enterprise . Middleware > > -- Sameera Jayasoma, Software Architect, WSO2, Inc. (http://wso2.com) email: [email protected] blog: http://blog.sameera.org twitter: https://twitter.com/sameerajayasoma flickr: http://www.flickr.com/photos/sameera-jayasoma/collections Mobile: 0094776364456 Lean . Enterprise . Middleware
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