JR52378: THREAD HANGS IN XMLTYPEDESCRIPTOR.GETFIELDDESCRIPTORBYELEMENTQNAME

7.5.1.2-WS-BPM-IFJR52378
8.0.1.3-WS-BPM-IFJR52378
8.0.1.2-WS-BPM-IFJR52378
Version 8.5.0 Fix Pack 2 for the IBM Business Process Manager products
Version 8.5 Refresh Pack 7 for the IBM Business Process Manager products

APAR status

• Closed as program error.

Error description

• When you use a certain web service in IBM Business Process
  Manager (BPM) Standard    that has been called many times in a
  short time, the thread might hang and you might see a stack
  trace that is similar to the following stack trace:
  
  at java.util.HashMap.findNonNullKeyEntry(HashMap.java:600)
  at java.util.HashMap.getEntry(HashMap.java:585)
  at java.util.HashMap.get(HashMap.java:571)
  at
  com.lombardisoftware.core.xml.XMLTypeDescriptor.getFieldDescript
  orByElementQName(XMLTypeDescriptor.java:386)
  

Local fix

• No local fix
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:  IBM BPM Advanced                            *
  *                  IBM BPM Standard                            *
  *                  IBM BPM Express                             *
  ****************************************************************
  * PROBLEM DESCRIPTION: When you use a certain web service in   *
  *                      IBM Business Process Manager (BPM)      *
  *                      Standard    that has been called many   *
  *                      times in a short time, the thread       *
  *                      might hang and you might see a stack    *
  *                      trace that is similar to the            *
  *                      following stack trace:                  *
  *                      at                                      *
  *                      java.util.HashMap.findNonNullKeyEntry(H *
  *                      ashMap.java:600)                        *
  *                      at                                      *
  *                      java.util.HashMap.getEntry(HashMap.java *
  *                      :585)                                   *
  *                      at                                      *
  *                      java.util.HashMap.get(HashMap.java:571) *
  *                      at                                      *
  *                      com.lombardisoftware.core.xml.XMLTypeDe *
  *                      scriptor.getFieldDescriptorByElementQNa *
  *                      me(XMLTypeDescriptor.java:386)          *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  The hash table used in the XMLTypeDescriptor is not thread
  safe. In high-load scenarios, the hash map might hang and use
  a lot of CPU.
  

Problem conclusion

• A fix is available for IBM BPM V8.0.1.2 that ensures that the
  XMLTypeDescriptor is thread safe.
  
  On Fix Central (http://www.ibm.com/support/fixcentral), search
  for JR52378:
  
  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 JR52378, 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

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

  BPM ADVANCED

• Fixed component ID

  5725C9400

Applicable component levels

• R800 PSY

     UP