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PM11754: ECLIPSE MODELLING FRAMEWORK (EMF) GLOBAL VALIDATOR REGISTRY MEMORY LEAK

Fixes are available

7.0.0.13: WebSphere Application Server V7.0 Fix Pack 13 for AIX
7.0.0.13: WebSphere Application Server V7.0 Fix Pack 13 for HP-UX
7.0.0.13: WebSphere Application Server V7.0 Fix Pack 13 for IBM i
7.0.0.13: WebSphere Application Server V7.0 Fix Pack 13 for Linux
7.0.0.13: WebSphere Application Server V7.0 Fix Pack 13 for Solaris
7.0.0.13: WebSphere Application Server V7.0 Fix Pack 13 for Windows
7.0.0.13: Java SDK 1.6 SR8FP1 Cumulative Fix for WebSphere Application Server
7.0.0.15: WebSphere Application Server V7.0 Fix Pack 15 for AIX
7.0.0.15: Java SDK 1.6 SR9 Cumulative Fix for WebSphere Application Server
7.0.0.15: WebSphere Application Server V7.0 Fix Pack 15 for HP-UX
7.0.0.15: WebSphere Application Server V7.0 Fix Pack 15 for IBM i
7.0.0.15: WebSphere Application Server V7.0 Fix Pack 15 for Linux
7.0.0.15: WebSphere Application Server V7.0 Fix Pack 15 for Solaris
7.0.0.15: WebSphere Application Server V7.0 Fix Pack 15 for Windows
7.0.0.17: WebSphere Application Server V7.0 Fix Pack 17
7.0.0.17: Java SDK 1.6 SR9 FP1 Cumulative Fix for WebSphere Application Server
7.0.0.19: WebSphere Application Server V7.0 Fix Pack 19
7.0.0.21: WebSphere Application Server V7.0 Fix Pack 21
7.0.0.23: WebSphere Application Server V7.0 Fix Pack 23
7.0.0.25: WebSphere Application Server V7.0 Fix Pack 25
7.0.0.27: WebSphere Application Server V7.0 Fix Pack 27
7.0.0.29: WebSphere Application Server V7.0 Fix Pack 29
7.0.0.31: WebSphere Application Server V7.0 Fix Pack 31
7.0.0.27: Java SDK 1.6 SR13 FP2 Cumulative Fix for WebSphere Application Server
7.0.0.33: WebSphere Application Server V7.0 Fix Pack 33
7.0.0.35: WebSphere Application Server V7.0 Fix Pack 35
7.0.0.37: WebSphere Application Server V7.0 Fix Pack 37
7.0.0.39: WebSphere Application Server V7.0 Fix Pack 39
7.0.0.41: WebSphere Application Server V7.0 Fix Pack 41
7.0.0.43: WebSphere Application Server V7.0 Fix Pack 43
7.0.0.45: WebSphere Application Server V7.0 Fix Pack 45
7.0.0.19: Java SDK 1.6 SR9 FP2 Cumulative Fix for WebSphere Application Server
7.0.0.21: Java SDK 1.6 SR9 FP2 Cumulative Fix for WebSphere
7.0.0.23: Java SDK 1.6 SR10 FP1 Cumulative Fix for WebSphere
7.0.0.25: Java SDK 1.6 SR11 Cumulative Fix for WebSphere Application Server
7.0.0.27: Java SDK 1.6 SR12 Cumulative Fix for WebSphere Application Server
7.0.0.29: Java SDK 1.6 SR13 FP2 Cumulative Fix for WebSphere Application Server
7.0.0.45: Java SDK 1.6 SR16 FP60 Cumulative Fix for WebSphere Application Server
7.0.0.31: Java SDK 1.6 SR15 Cumulative Fix for WebSphere Application Server
7.0.0.35: Java SDK 1.6 SR16 FP1 Cumulative Fix for WebSphere Application Server
7.0.0.37: Java SDK 1.6 SR16 FP3 Cumulative Fix for WebSphere Application Server
7.0.0.39: Java SDK 1.6 SR16 FP7 Cumulative Fix for WebSphere Application Server
7.0.0.41: Java SDK 1.6 SR16 FP20 Cumulative Fix for WebSphere Application Server
7.0.0.43: Java SDK 1.6 SR16 FP41 Cumulative Fix for WebSphere Application Server

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APAR status

  • Closed as program error.

Error description

  • The Eclipse Modelling Framework (EMF) global validator registry
    is implemented using static storage, and sees continuous growth
    during long runs.
    .
       The java heap will show the following objects in the heap
    and these accumulate over time.
    .
    25,653,768 (35%) [32] 4 class
    org/eclipse/emf/ecore/EValidator$Registry
     25,653,600 (35%) [48] 1
                org/eclipse/emf/ecore/impl/EValidatorRegistryImpl
      25,653,552 (35%) [272] 26 array of java/util/HashMap$Entry
       4,402,304 (6%) [32] 2 java/util/HashMap$Entry
    
    This shows thatthere are 26 objects on the heap that appear to
    be allocated to a HashMap from EMF code.
    
    .
    25,653,768 (35%) [32] 4 class
    org/eclipse/emf/ecore/EValidator$Registry
    0xa0a000
     25,653,600 (35%) [48] 1
    org/eclipse/emf/ecore/impl/EValidatorRegistryImpl 0xa0ce18
      25,653,552 (35%) [272] 26 array of java/util/HashMap$Entry
    0x467c950
       4,402,304 (6%) [32] 2 java/util/HashMap$Entry 0x45cda70
       4,164,056 (5%) [32] 2 java/util/HashMap$Entry 0x41d4588
       4,164,056 (5%) [32] 2 java/util/HashMap$Entry 0x473a008
       3,875,384 (5%) [32] 3 java/util/HashMap$Entry 0x4dc3ee0
       3,666,728 (5%) [32] 3 java/util/HashMap$Entry 0x36d1638
        (more)
    .
    .-------------------------------------------
    5,327,320 (5%) [56] 4 class
    org/eclipse/emf/ecore/EValidator$Registry
     5,327,120 (5%) [48] 1
    org/eclipse/emf/ecore/impl/EValidatorRegistryImpl
      5,327,072 (5%) [152] 7 array of java/util/HashMap$Entry
    0x10097660
       3,768,816 (3%) [32] 2 java/util/HashMap$Entry 0x12504dd8
       1,234,272 (1%) [32] 3 java/util/HashMap$Entry 0x12613700
       323,640 (0%) [32] 2 java/util/HashMap$Entry 0x100daeb0
       ...
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of IBM WebSphere Application      *
    *                  Server V7.0                                 *
    ****************************************************************
    * PROBLEM DESCRIPTION: Eclipse Modeling Framework (EMF)        *
    *                      global registries see continuous        *
    *                      growth on module restarts.              *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    For Java Enterprise Application Modules which make use of
    Eclipse Modeling Framework (EMF) metadata, each start of the
    module adds an entry to a static model package registry and,
    if enabled to use validators, adds an entry to a static
    validator registry.
    
    During repeated restarts of the module, this manifests as a
    memory leak, as the entries added to the package registry and
    the entries added to the validator registry are never released.
    

Problem conclusion

  • A new API was added to the static model package registry to
    enable model packages associated with a module to be released.
    Changes were made to runtime containers to perform explicit
    releases when shutting down a module.
    
    The fix for this APAR is currently targeted for inclusion in
    fix pack 7.0.0.13.  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

    PM11754

  • Reported component name

    WEBSPHERE APP S

  • Reported component ID

    5724J0800

  • Reported release

    700

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2010-04-07

  • Closed date

    2010-08-06

  • Last modified date

    2012-03-30

  • 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

  • R700 PSY

       UP



Document information

More support for: WebSphere Application Server
General

Software version: 7.0

Reference #: PM11754

Modified date: 30 March 2012