IBM Support

PI94514: NullPointerException occurs using a MetaDataGenerator.

Fixes are available

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

  • The following exception occurs in a high volume environment
    using a metadatagenerator:
    SRVE0777E: Exception thrown by application class
    'com.ibm.ws.cache.servlet.FragmentCacheProcessor.processMeta
    DataGenerator:733'
    java.lang.NullPointerException
    at
    com.ibm.ws.cache.servlet.FragmentCacheProcessor.processMetaD
    ataGenerator(FragmentCacheProcessor.java:733)
    at
    com.ibm.ws.cache.servlet.FragmentCacheProcessor.populateFrag
    mentInfo(FragmentCacheProcessor.java:498)
    at
    com.ibm.ws.cache.servlet.ServletWrapper.prepareMetadata(Serv
    letWrapper.java:99)
    at
    com.ibm.ws.cache.servlet.CacheHook.handleFragment(CacheHook.
    java:423)
    at
    com.ibm.ws.cache.servlet.CacheHook.handleServlet(CacheHook.j
    ava:233)
    at
    com.ibm.ws.cache.servlet.ServletWrapper.service(ServletWrapp
    er.java:240)
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of IBM WebSphere Application      *
    *                  Server using servlet caching with a         *
    *                  metadatagenerator.                          *
    ****************************************************************
    * PROBLEM DESCRIPTION: NullPointerException occurs using a     *
    *                      MetaDataGenerator.                      *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    The following exception occurs in a high volume environment
    using a metadatagenerator:
    SRVE0777E: Exception thrown by application class
    'com.ibm.ws.cache.servlet.FragmentCacheProcessor.processMetaData
    Generator:733'
    java.lang.NullPointerException
    at
    com.ibm.ws.cache.servlet.FragmentCacheProcessor.processMetaDataG
    enerator(FragmentCacheProcessor.java:733)
    at
    com.ibm.ws.cache.servlet.FragmentCacheProcessor.populateFragment
    Info(FragmentCacheProcessor.java:498)
    at
    com.ibm.ws.cache.servlet.ServletWrapper.prepareMetadata(ServletW
    rapper.java:99)
    at
    com.ibm.ws.cache.servlet.CacheHook.handleFragment(CacheHook.java
    :423)
    at
    com.ibm.ws.cache.servlet.CacheHook.handleServlet(CacheHook.java:
    233)
    at
    com.ibm.ws.cache.servlet.ServletWrapper.service(ServletWrapper.j
    ava:240)
    

Problem conclusion

  • Dynacache servlet caching code has been modified to provide
    concurrent access to the application's metadategenerator.
    
    The fix for this APAR is currently targeted for inclusion in fix
    pack 18.0.0.2.  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

    PI94514

  • Reported component name

    LIBERTY PROFILE

  • Reported component ID

    5724J0814

  • Reported release

    CD0

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2018-03-01

  • Closed date

    2018-03-20

  • Last modified date

    2018-03-20

  • 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

    LIBERTY PROFILE

  • Fixed component ID

    5724J0814

Applicable component levels

  • RCD0 PSY

       UP

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

Document Information

Modified date:
19 October 2021