IBM Support

JR59863: YOU MIGHT RECEIVE THE CONCURRENTMODIFICATIONEXCEPTION WHEN YOU CALL REST APIS

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Direct link to fix

workflow.18002.delta.repository

 

APAR status

  • Closed as program error.

Error description

  • When you make REST API calls, you might see
ConcurrentModificationExceptions like the following exception:


Unexpected exception during execution. Exception information:
''{0}''.
java.util.ConcurrentModificationException
at java.util.HashMap$HashIterator.nextNode(HashMap.java:1453)
at java.util.HashMap$EntryIterator.next(HashMap.java:1487)
at java.util.HashMap$EntryIterator.next(HashMap.java:1485)
at java.util.AbstractMap.toString(AbstractMap.java:565)
at java.lang.String.valueOf(String.java:3366)
at com.ibm.bpm.rest.impl.service.ServiceRunnerManager.
   initOldWebWFM(ServiceRunnerManager.java:136)
at com.ibm.bpm.rest.impl.service.ServiceRunnerManager.
   getInstance(ServiceRunnerManager.java:92)
at com.ibm.bpm.rest.impl.service.StartActionHandler.
   getServiceRunner(StartActionHandler.java:856)
at com.ibm.bpm.rest.impl.service.StartActionHandler.
   handleActionGetModel(StartActionHandler.java:328)
at com.ibm.bpm.rest.impl.service.StartActionHandler.
   handleAction(StartActionHandler.java:374)
at com.ibm.bpm.rest.impl.service.ServiceResource.
   postServiceActions(ServiceResource.java:515)

Local fix

  • Reduce REST API trace to a trace level less than 'finer'

Problem summary

  • In high-load scenarios a non-synchronized hash map is read and
traced while it is updated. As a result, you receive a
ConcurrentModificationException.

PRODUCTS AFFECTED
IBM BPM Advanced
IBM BPM Standard
IBM Business Automation Workflow

Problem conclusion

  • A fix that synchronizes the access to this hash map so that you
do not receive the exception will be available in a future
release of IBM Business Automation Workflow.

Temporary fix

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    JR59863
    • 

  • Reported component name
    BPM
    • 

  • Reported component ID
    5737A5700
    • 

  • Reported release
    860
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt / Xsystem
    • 

  • Submitted date
    2018-08-07
    • 

  • Closed date
    2018-10-12
    • 

  • Last modified date
    2018-10-12
    • 





    

  • APAR is sysrouted FROM one or more of the following:
    

    • 

  • APAR is sysrouted TO one or more of the following:
    

    • 



Fix information


    

  • Fixed component name
    BPM
    • 

  • Fixed component ID
    5737A5700
    • 



Applicable component levels


    








      
              
                            

              

              [{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSFPJS","label":"IBM Business Process Manager"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"8.6.0.0","Edition":"","Line of Business":{"code":"LOB45","label":"Automation"}}]
              

                          

          
 
        

      

    

      

        

          

            
Document Information


            

            


                        

            Modified date:
            

            14 September 2022
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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