PH31571: ECLIPSELINK INTERMITTENT NPE FROM WEAVED ENTITY CODE

APAR status

• Closed as program error.

Error description

• For OneToMany relationships, EclipseLink sometimes throws a
  NullPointerException from the weaved entity code.
   Caused by:
  java.lang.reflect.InvocationTargetException
   	at
  sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  
  	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce
  ssorImpl.java:90)
   	at sun.reflect.DelegatingMethodAccessorImpl.
  invoke(DelegatingMethodAccessorImpl.java:55)
   	at
  java.lang.reflect.Method.invoke(Method.java:508)
   	at org.eclips
  e.persistence.internal.descriptors.MethodAttributeAccessor.setAt
  tributeValueInObject(MethodAttributeAccessor.java:247)
   	... 84
  more
   Caused by: java.lang.NullPointerException
   	at
  com.sample.Rate._persistence_set_field_vh(Rate.java)
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server - Java Persistence API -             *
  *                  JPA 2.1 & EclipseLink                       *
  ****************************************************************
  * PROBLEM DESCRIPTION: EclipseLink intermittently throws a     *
  *                      NullPointerException at runtime from    *
  *                      weaved entity code in multi-threaded    *
  *                      environments.                           *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  For @OneToMany relationships, EclipseLink sometimes throws a
  NullPointerException from the weaved entity code. This is a
  multithreaded issue where EclipseLink is not properly
  synchronizing.
  ´´´
  Caused by:
  java.lang.reflect.InvocationTargetException
  at
  sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce
  ssorImpl.java:90)
  at sun.reflect.DelegatingMethodAccessorImpl.
  invoke(DelegatingMethodAccessorImpl.java:55)
  at
  java.lang.reflect.Method.invoke(Method.java:508)
  at org.eclips
  e.persistence.internal.descriptors.MethodAttributeAccessor.setAt
  tributeValueInObject(MethodAttributeAccessor.java:247)
  ... 84
  more
  Caused by: java.lang.NullPointerException
  at
  com.sample.Rate._persistence_set_field_vh(Rate.java)
  ´´´
  

Problem conclusion

• The fix for this APAR changes the EclipseLink implementation
  and involves an update to the third-party source. See
  https://bugs.eclipse.org/bugs/show_bug.cgi?id=567891
  
  This fix is currently targeted for WebSphere Application
  Server 9.0.5.7 and WebSphere Liberty 20.0.0.12. For more
  information, see 'Recommended Updates for WebSphere
  Application Server':
  https://www.ibm.com/support/pages/node/715553
  

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

  WEBS APP SERV N

• Fixed component ID

  5724H8800

Applicable component levels

• R900 PSY

     UP