[news.eclipse.rt.eclipselink] Re: MergeChangeSetCommand NullPointerExcep

[james.sutherland@xxxxxxxxxx (James )]

I would recommend logging a bug.  You may also try to see if the issue 
still occurs in 1.1 or 2.0.  The bug seems to be related to using a Map 
container policy, but your mapping did not seem to include this?

As a workaround, you may consider switching cache coordination to use 
invalidation instead of change sets.

http://www.eclipse.org/eclipselink/api/1.1.2/org/eclipse/persistence/descriptors/ClassDescriptor.html#setCacheSynchronizationType(int)

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James