OpenJPA 2.3.0 StackOverflow Error for the entities.

I am facing StackOverflow error in my application. I am inserting large amount of data approx 20000 entities. Around 6 entities are involved with different relationship like one to many, many to one, one to one.

Version: OpenJPA 2.4.2

1. persistence.xml
   <property name="openjpa.RuntimeUnenhancedClasses" value="supported"/>
   <property name="openjpa.DataCache" value="true(CacheSize=1000)"/>
   <property name="openjpa.QueryCache" value="true(CacheSize=1000)" />
   <property name="openjpa.ConnectionProperties" value="MaxActive=25,MaxIdle=10,MinIdle=5,MaxWait=60000" />

1. Running it on Tomcat 8.0.43, JDK1.8.0_144
2. Error:
   java.lang.StackOverflowError
   java.security.AccessController.doPrivileged(Native Method)
   org.apache.openjpa.enhance.Reflection.getDeclaredField(Reflection.java:280)
   org.apache.openjpa.enhance.Reflection.findField(Reflection.java:259)
   org.apache.openjpa.enhance.xx$xxx$xxxxxxx$xx$entity$TableModDPSet$pcsubclass.pcProvideField(Unknown Source)
   org.apache.openjpa.kernel.StateManagerImpl.provideField(StateManagerImpl.java:3240)
   org.apache.openjpa.kernel.SaveFieldManager.isFieldEqual(SaveFieldManager.java:189)
   org.apache.openjpa.kernel.StateManagerImpl.dirtyCheck(StateManagerImpl.java:939)
   org.apache.openjpa.kernel.ManagedCache.dirtyCheck(ManagedCache.java:302)