IBM Support

PI88248: ConcurrentModificationException error may occur when running JAX-RPC application with WAS v9.

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APAR status

  • Closed as program error.

Error description

  • A JAX-RPC application may fail with WAS v9 with the following
    error:
    
    java.util.ConcurrentModificationException
    at java.util.ArrayList.sort(ArrayList.java:1467)
    at java.util.Collections.sort(Collections.java:186)
    at
    com.ibm.ws.webservices.engine.deployment.wsdd.WSDDJAXRPCHandlerI
    nfoChain.sort(WSDDJAXRPCHandlerInfoChain.java:332)
    at
    com.ibm.ws.webservices.engine.deployment.wsdd.WSDDJAXRPCHandlerI
    nfoChain.getHandlerChain(WSDDJAXRPCHandlerInfoChain.java:292)
    at
    com.ibm.ws.webservices.engine.deployment.wsdd.WSDDTargetedChain.
    getHandlerChain(WSDDTargetedChain.java:201)
    at
    com.ibm.ws.webservices.engine.deployment.wsdd.WSDDTargetedChain.
    makeNewInstance(WSDDTargetedChain.java:345)
    at
    com.ibm.ws.webservices.engine.deployment.wsdd.WSDDDeployableItem
    .getInstance(WSDDDeployableItem.java:322)
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of IBM WebSphere Application      *
    *                  Server for JAX-RPC Web services.            *
    ****************************************************************
    * PROBLEM DESCRIPTION: The ConcurrentModificationException     *
    *                      may occur when running JAX-RPC          *
    *                      application with WAS v9.                *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    A JAX-RPC application that worked correctly with previous WAS
    versions may fail with WAS v9 with the following error:
    java.util.ConcurrentModificationException
    at java.util.ArrayList.sort(ArrayList.java:1467)
    at java.util.Collections.sort(Collections.java:186)
    at
    com.ibm.ws.webservices.engine.deployment.wsdd.WSDDJAXRPCHandlerI
    nfoChain.sort(WSDDJAXRPCHandlerInfoChain.java:332)
    at
    com.ibm.ws.webservices.engine.deployment.wsdd.WSDDJAXRPCHandlerI
    nfoChain.getHandlerChain(WSDDJAXRPCHandlerInfoChain.java:292)
    at
    com.ibm.ws.webservices.engine.deployment.wsdd.WSDDTargetedChain.
    getHandlerChain(WSDDTargetedChain.java:201)
    at
    com.ibm.ws.webservices.engine.deployment.wsdd.WSDDTargetedChain.
    makeNewInstance(WSDDTargetedChain.java:345)
    at
    com.ibm.ws.webservices.engine.deployment.wsdd.WSDDDeployableItem
    .getInstance(WSDDDeployableItem.java:322)
    

Problem conclusion

  • The problem was related to changes in Collections.sort
    implmentation in Java 8.  Synchronization has been added to
    avoid the problem.
    
    The fix for this APAR is currently targeted for inclusion in
    fix pack 9.0.0.8.  Please refer to the Recommended Updates
    page for delivery information:
    http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
    

Temporary fix

Comments

APAR Information

  • APAR number

    PI88248

  • Reported component name

    WEBSPHERE APP S

  • Reported component ID

    5724J0800

  • Reported release

    900

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2017-10-02

  • Closed date

    2018-02-05

  • Last modified date

    2018-02-05

  • 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

    WEBSPHERE APP S

  • Fixed component ID

    5724J0800

Applicable component levels



Document information

More support for: WebSphere Application Server
General

Software version: 900

Reference #: PI88248

Modified date: 05 February 2018


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