IBM Support

JR57215: YOU RECEIVE A CONCURRENTMODIFICATIONEXCEPTION WHEN CLASS LOADERSARE CACHED

Subscribe

You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • When IBM Business Process Manager (BPM) tries to cache managed
    asset class loaders for its process applications, exceptions
    might appear in the SystemOut.log file showing a stack like the
    following example:
    
    Caused by: java.util.ConcurrentModificationException
    at
    java.util.LinkedHashMap$AbstractMapIterator.checkConcurrentMod(L
    inkedHashMap.java:136)
    at
    java.util.LinkedHashMap$AbstractMapIterator.makeNext(LinkedHashM
    ap.java: 141)
    at java.util.LinkedHashMap$KeyIterator.next(LinkedHashMap.j
    ava:201)
    at
    com.lombardisoftware.server.core.ManagedAssetClassLoader.toStrin
    g(Manage dAssetClassLoader.java:185)
         at java.lang.String.valueOf(String.java:1569)
         at java.lang.StringBuilder.append(StringBuilder.java:194)
    
    PRODUCTS AFFECTED
    IBM BPM Advanced
    IBM BPM Standard
    IBM BPM Express
    

Local fix

Problem summary

  • Interim fix JR54100 introduced code that iterates over a
    collection of all managed asset class loaders. If a different
    thread adds an entry to the collection at the same time, you
    receive a concurrentModification exception.
    

Problem conclusion

  • A fix is available on top of IBM BPM fix pack 8.0.1.3 and is
    currently targeted for inclusion in IBM BPM 8570 CF2017.03 that
    changes the fix code introduced by JR54100 to be thread-safe.
    

Temporary fix

Comments

APAR Information

  • APAR number

    JR57215

  • Reported component name

    BPM STANDARD

  • Reported component ID

    5725C9500

  • Reported release

    801

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2016-12-28

  • Closed date

    2017-03-07

  • Last modified date

    2017-03-07

  • 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 STANDARD

  • Fixed component ID

    5725C9500

Applicable component levels

  • R801 PSY

       UP

  • R857 PSY

       UP

[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSFTDH","label":"IBM Business Process Manager Standard"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"8.0.1","Edition":"","Line of Business":{"code":"LOB36","label":"IBM Automation"}}]

Document Information

Modified date:
07 March 2017