IBM Support

JR49742: COMETD CHANNELS RELATED TO IBM PROCESS PORTAL NOTIFICATIONS ARE RETAINED IN HEAP MEMORY

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APAR status

  • Closed as program error.

Error description

  • In the IBM Process Portal notification application, CometD
    channel objects might not be properly cleaned up when they are
    no longer needed. As a result, the LocalSession object continues
     to grow in heap memory and, eventually, you see an
    out-of-memory condition in the Java Virtual Machine where the
    application is deployed.
    
    The following heap dump example illustrates the issue:
    
    2,356,682,760 (76.81%) [32] 34 class
    com/ibm/bpm/socialbus/servlet/SocialBusServiceServlet 0x2395f30
    |- 2,356,577,448 (76.8%) [32] 9 class
    com/ibm/bpm/socialbus/bayeux/BayeuxServerHelper 0x2408fb8
       |- 2,356,577,192 (76.8%) [112] 19
    com/ibm/bpm/socialbus/servlet/SocialBusBayeuxServerImpl
    0x89a22c0
          |- 2,068,051,496 (67.4%) [48] 2
    java/util/concurrent/ConcurrentHashMap 0x89a3a30
             |- 2,068,051,432 (67.4%) [80] 16 array of
    java/util/concurrent/ConcurrentHashMap$Segment 0x89a69b8
                |- 2,024,873,952 (65.99%) [32] 2
    java/util/concurrent/ConcurrentHashMap$Segment 0x89aa728
                   |- 2,024,873,888 (65.99%) [131,088] 14,319 array
    of
    java/util/concurrent/ConcurrentHashMap$HashEntry 0x6c74a478
                      |- 2,021,662,032 (65.89%) [24] 2
    java/util/concurrent/ConcurrentHashMap$HashEntry 0x6f07a9d0
                         |- 2,021,661,984 (65.89%) [56] 10
    org/cometd/server/ServerChannelImpl 0x6f8a62f8
                            |- 2,021,658,976 (65.89%) [56] 10
    org/cometd/server/ServerChannelImpl 0x1fae32b0
                               |- 1,137,951,016 (37.09%) [56] 10
    org/cometd/server/ServerChannelImpl 0xb790900
                                  |- 1,137,931,080 (37.09%) [56] 10
    org/cometd/server/ServerChannelImpl 0xb790958
                                     |- 1,137,928,488 (37.09%) [56]
    9
    org/cometd/server/ServerChannelImpl 0xb7908b0
                                        |- 1,137,927,640 (37.09%)
    [16] 2
    org/eclipse/jetty/util/ConcurrentHashSet 0xb794f48
                                           |- 1,137,927,608
    (37.09%) [48] 2
    java/util/concurrent/ConcurrentHashMap 0xb79f480
                                              |- 1,137,927,560
    (37.09%)
    [80] 16 array of java/util/concurrent/ConcurrentHashMap$Segment
    0xb79fbb0
                                                 |- 1,137,926,136
    (37.09%)
    [32] 2 java/util/concurrent/ConcurrentHashMap$Segment 0xb7a0248
                                                    |- 1,137,926,072
    (37.09%) [24] 1 array of
    java/util/concurrent/ConcurrentHashMap$HashEntry 0xb7a11e8
    1,137,926,048
    (37.09%) [24] 2 java/util/concurrent/ConcurrentHashMap$HashEntry
    0x1e9bf540
    1,137,926,024
    (37.09%) [56] 10 org/cometd/server/ServerChannelImpl 0x1e9d9a90
    1,137,925,152 (37.09%) [16] 2
    
    PRODUCTS AFFECTED:
    IBM Business Process Manager (BPM) Advanced
    IBM BPM Standard
    IBM BPM Express
    

Local fix

  • Important: Performing the following steps disables collaboration
    in Process Portal in addition to automatically refreshing the
    task list in the Work tab.
    
    1. Disable the server-generated notification HTTP traffic by
    changing <web-messaging-push enabled="true"> to
    <web-messaging-push enabled="false"> in the 100Custom.xml file.
    2. Disable the client-generated subscription HTTP traffic (POST
    requests), by applying interim fix JR48704. For more
    information, see JR48704: DELAYS OCCUR WHILE LOGGING INTO IBM
    PROCESS PORTAL BECAUSE COMETD POST SUBSCRIPTIONS ARE LARGE at
    http://www.ibm.com/support/docview.wss?uid=swg1JR48704.
    

Problem summary

  • No additional information is available.
    

Problem conclusion

  • A fix is available for IBM BPM V8.0.1.2 and V8.5.0.1 that
    properly cleans up the CometD channels in the Process Portal
    notification application.
    
    On Fix Central (http://www.ibm.com/support/fixcentral), search
    for JR49742:
    
     1. Select IBM Business Process Manager with your edition from
    the product selector, the installed version to the fix pack
    level, and your platform, and then click Continue.
     2. Select APAR or SPR, enter JR49742, and click Continue.
    
    When you download fix packages, ensure that you also download
    the readme file for each fix. Review each readme file for
    additional installation instructions and information about the
    fix.
    

Temporary fix

  • Not applicable
    

Comments

APAR Information

  • APAR number

    JR49742

  • Reported component name

    BPM ADVANCED

  • Reported component ID

    5725C9400

  • Reported release

    801

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2014-03-24

  • Closed date

    2015-05-14

  • Last modified date

    2015-05-14

  • 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 ADVANCED

  • Fixed component ID

    5725C9400

Applicable component levels

  • R801 PSY

       UP

  • R850 PSY

       UP

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Document Information

Modified date:
14 May 2015