LI76698: CMVC 219685 - AVOID RANDOM NOSCUHELEMENTEXCEPTION HANDLING WEB SERVICES TRANSACTION RESPONSE

7.0.0.9 for Developer Express
7.0.0.9 for Developer Professional
7.0.0.9 for Developer Enterprise
7.0.0-WS-WCServer-FP009
WebSphere Commerce Version 7.0.0.7 Fix Pack
WebSphere Commerce Version 7.0.0.9 Fix Pack

APAR status

• Closed as program error.

Error description

• During handling of a web service response WebSphere Commerce
  could throw a NoSuchElementException randomly in a not
  reproducible way and a transaction response is not handled
  properly.
  
  The SystemOut.log reports the following exception:
  [2/14/12 11:37:31:125 UTC] 0000006d RemoteExcepti E CNTR0020E:
  EJB threw an unexpected (non-declared) exception during
  invocation of method "executeService" on bean
  "BeanId(WC_guest#Enablement-BaseComponentsData.jar#WebServiceEng
  ine, null)". Exception data: java.util.NoSuchElementException
  at
  java.util.HashMap$AbstractMapIterator.makeNext(HashMap.java:129)
  at java.util.HashMap$KeyIterator.next(HashMap.java:200)
  at
  java.util.AbstractCollection.toArray(AbstractCollection.java:304
  )
  at java.util.ArrayList.addAll(ArrayList.java:236)
  at
  com.ibm.commerce.datatype.MapBasedTypedProperty.keys(MapBasedTyp
  edProperty.java:85)
  at
  com.ibm.commerce.webcontroller.WebControllerHelper.mergeProperti
  es(WebControllerHelper.java:194)
  at
  com.ibm.commerce.command.AbstractViewCommand.mergeProperties(Abs
  tractViewCommand.java:142)
  at
  com.ibm.commerce.messaging.composer.Composer.getURLRecordResult(
  Composer.java:522)
  at
  com.ibm.commerce.messaging.composer.Composer.getURLRecordResult(
  Composer.java:367)
  ...
  
  NoSuchElementException is coming from the iterator of the
  default properties of the ViewRegistryEntry. This indicates that
  the default properties are being modified by another thread, for
  example StrutsRegistrySourceImpl, while this thread is iterating
  over it. That is an error happening due to multiple threads
  concurrently looking at the default properties.
  

Local fix

Problem summary

• USERS AFFECTED:
  WebSphere Commerce users on v7.0 using outbound/inbound web
  services
  
  PROBLEM ABSTRACT:
  NoSuchElementException is received randomly during the handling
  of a web service response message
  
  BUSINESS IMPACT:
  It affects the web service flow management, making faulty a
  correct answer.
  
  RECOMMENDATION:
  

Problem conclusion

• Make multiple threads accessing concurrently the default
  properties. This efix APAR code creates a copy of the default
  properties before modifying them, so that each thread has its
  own copy of the default properties.
  -------------------------------------------------------------
  The latest available maintenance information can be obtained
  from the Recommended Fixes for WebSphere Commerce technote:
  http://www.ibm.com/support/docview.wss?rs=3046&uid=swg21261296
  

Temporary fix

Comments

APAR Information

• 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

  WC BUS ED ILINU

• Fixed component ID

  5724I3804

Applicable component levels

• R600 PSY

     UP