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PI72923: CDI INJECTION OF JAVA BATCH JOBCONTEXT FAILS WITH NPE IN THE ABSENCE OF AN ACTIVE JOB ON THE CURRENT THREAD.

Fixes are available

17.0.0.3: WebSphere Application Server Liberty 17.0.0.3
17.0.0.4: WebSphere Application Server Liberty 17.0.0.4
18.0.0.1: WebSphere Application Server Liberty 18.0.0.1
18.0.0.2: WebSphere Application Server Liberty 18.0.0.2
18.0.0.3: WebSphere Application Server Liberty 18.0.0.3
18.0.0.4: WebSphere Application Server Liberty 18.0.0.4
19.0.0.1: WebSphere Application Server Liberty 19.0.0.1
19.0.0.2: WebSphere Application Server Liberty 19.0.0.2
19.0.0.3: WebSphere Application Server Liberty 19.0.0.3
19.0.0.4: WebSphere Application Server Liberty 19.0.0.4
19.0.0.5: WebSphere Application Server Liberty 19.0.0.5
19.0.0.6: WebSphere Application Server Liberty 19.0.0.6
19.0.0.7: WebSphere Application Server Liberty 19.0.0.7
19.0.0.8: WebSphere Application Server Liberty 19.0.0.8
19.0.0.9: WebSphere Application Server Liberty 19.0.0.9
19.0.0.10: WebSphere Application Server Liberty 19.0.0.10
19.0.0.11: WebSphere Application Server Liberty 19.0.0.11
19.0.0.12: WebSphere Application Server Liberty 19.0.0.12
20.0.0.1: WebSphere Application Server Liberty 20.0.0.1
20.0.0.2: WebSphere Application Server Liberty 20.0.0.2
20.0.0.3: WebSphere Application Server Liberty 20.0.0.3
20.0.0.4: WebSphere Application Server Liberty 20.0.0.4
20.0.0.5: WebSphere Application Server Liberty 20.0.0.5
20.0.0.6: WebSphere Application Server Liberty 20.0.0.6
20.0.0.7: WebSphere Application Server Liberty 20.0.0.7
20.0.0.8: WebSphere Application Server Liberty 20.0.0.8
20.0.0.9: WebSphere Application Server Liberty 20.0.0.9
20.0.0.10: WebSphere Application Server Liberty 20.0.0.10
20.0.0.11: WebSphere Application Server Liberty 20.0.0.11
20.0.0.12: WebSphere Application Server Liberty 20.0.0.12

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APAR status

  • Closed as program error.

Error description

  • "CDI Injection of Java Batch JobContext fails with
    NullPointerException in the absence of an active job on the
    current thread."
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of IBM WebSphere Application      *
    *                  Server Liberty- Batch                       *
    ****************************************************************
    * PROBLEM DESCRIPTION: CDI injection of a Java Batch           *
    *                      JobContext when there is not an active  *
    *                      job on the current thread may result in *
    *                      a NullPointerException.                 *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    When using CDI to inject a JobContext for a Java Batch job, the
    context comes from the active job on the thread. If there is no
    job currently on the thread, the JobContext will have a null
    value. Accessing the injected JobContext in this case is not
    properly guarded in some paths, leading to the potential for a
    NullPointerException.
    

Problem conclusion

  • Code has been modified so that the CDI engine will now inject a
    'null' value for a JobContext when no batch job is active on the
    thread, for an injection into a bean managed whose lifecycle is
    managed by CDI.
    
    Note this still does not necessarily allow a JobContext to be
    injected into an EJB when no batch job is active.  But, since
    EJB instance lifecycles are managed via EJB pooling, this is of
    limited use anyway, since standard CDI scopes can't be used to
    control the EJB instance obtained.
    
    The fix for this APAR is currently targeted for inclusion in fix
    pack 17.0.0.3.  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

    PI72923

  • Reported component name

    WEBSPHERE APP S

  • Reported component ID

    5724J0800

  • Reported release

    CD0

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2016-11-29

  • Closed date

    2017-10-05

  • Last modified date

    2017-10-05

  • 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

    WAS LIBERTY COR

  • Fixed component ID

    5725L2900

Applicable component levels

  • RCD0 PSY

       UP

[{"Business Unit":{"code":"BU053","label":"Cloud \u0026 Data Platform"},"Product":{"code":"SSD28V","label":"WebSphere Application Server Liberty Core"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"CD0","Line of Business":{"code":"LOB36","label":"IBM Automation"}}]

Document Information

Modified date:
18 October 2021