IBM Support

IT18716: VERY LARGE LINKEDLIST OBJECTS CAUSE OUT OF MEMORY STATE

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APAR status

  • Closed as program error.

Error description

  • Very large com.maverick.sshd.Chanel$_I LinkedList objects cause
    the heap to run out of memory.
    

Local fix

Problem summary

  • Users Affected:
    All
    
    Problem Summary:
    SFTP server causes a "out of memory" state to occur when you
    download 4.6GB corrupted file for around 180 times continuously.
    
    It is observered in the heap dumps that the maverick jar leaks
    few LinkedList objects.
    
    One instance of "com.maverick.nio.SelectorThread" loaded by
    "<system class loader>" occupies 1,997,243,640 (18.50%) bytes.
    The memory is accumulated in one instance of
    "java.util.LinkedList" loaded by "<system class loader>".
    
    Platforms Affected:
    All
    

Problem conclusion

  • Resolution Summary:
    A code fix is provided.
    
    Delivered In:
    5020500_15
    5020601_7
    5020603_1
    

Temporary fix

Comments

  • Published On: 02-FEB-2017
    

APAR Information

  • APAR number

    IT18716

  • Reported component name

    STR B2B INTEGRA

  • Reported component ID

    5725D0600

  • Reported release

    525

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2017-01-09

  • Closed date

    2017-01-24

  • Last modified date

    2017-03-23

  • 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

    STR B2B INTEGRA

  • Fixed component ID

    5725D0600

Applicable component levels

  • R525 PSY

       UP

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Document Information

Modified date:
23 March 2017