PI22721: WORKLIGHT SERVER MAY RUN OUT OF MEMORY WHEN THE SERVER LOGS ARE CONFIGURED TO BE FORWARDED TO ANALYTICS SERVER

Download for IBM Worklight V6.1.0 Fix Pack 2
Download for IBM Worklight V6.2.0 Fix Pack 1
IBM Worklight Interim Fix README for 6.0.0.2

APAR status

• Closed as program error.

Error description

• Worklight Server may run out of memory when the server logs are
  configured to be forwarded to analytics server according to
  http://www-01.ibm.com/support/knowledgecenter/SSZH4A_6.1.0/com.i
  bm.worklight.deploy.doc/admin/r_analytics_properties.html?lang=e
  n
  java.lang.OutOfMemoryError and
  java.lang.OutOfMemoryErrorException may be printed in the log
  file.
  
  Memory heap file may be filled with the
  "com/ibm/ws/logging/object/WsLogRecordImpl" objects.
  
  
  Additional Keywords:
  
  Worklight Versions Affected:  6.x
  
  Initial Impact: High
  

Local fix

• Disable the problematic code by using
  wl.analytics.logs.forward=false
  This feature is enabled by default.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * Administrators of Worklight servers that are configured to   *
  * forward server logs (which is the default setting) to the    *
  * analytics platform.                                          *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * The Worklight server is configured to forward server logs to *
  * the analytics platform by default.  Because the server can   *
  * log before some internal features are loaded, the log data   *
  * must be queued in memory.  The queue size is unlimited, and  *
  * therefore may run out of memory when the server is set to    *
  * high verbosity logging, but the log forwarding feature is    *
  * not yet initialized.                                         *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * -                                                            *
  ****************************************************************
  

Problem conclusion

• The code has been updated to limit the size of the in-memory
  queue so memory cannot be exhausted in the problematic code
  path.
  

Temporary fix

Comments

APAR Information

• 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

  WORKLIGHT CONSU

• Fixed component ID

  5725I4301

Applicable component levels

• R600 PSY

     UP

• R610 PSY

     UP

• R620 PSY

     UP