Apex throws an exception when flushing context.

Context flushing is not implemented in Apex as yet and this exception is ignored in running systems. However, the code should be fixed to stop the exception being generated.

Two occurrances have been observed, A concurrent access exception:
Exception in thread "DistributorFlushTimerTask" java.util.ConcurrentModificationException
at java.util.HashMap$HashIterator.nextNode(HashMap.java:1442)
at java.util.HashMap$EntryIterator.next(HashMap.java:1476)
at java.util.HashMap$EntryIterator.next(HashMap.java:1474)
at org.apache.avro.generic.GenericData.toString(GenericData.java:558)
at org.apache.avro.generic.GenericData.toString(GenericData.java:525)
at org.apache.avro.generic.GenericData.toString(GenericData.java:504)
at org.apache.avro.generic.GenericData$Record.toString(GenericData.java:228)
at com.ericsson.apex.context.impl.distribution.AbstractDistributor.flush(AbstractDistributor.java:202)
at com.ericsson.apex.context.impl.distribution.DistributorFlushTimerTask.run(DistributorFlushTimerTask.java:73)
at java.util.TimerThread.mainLoop(Timer.java:555)
at java.util.TimerThread.run(Timer.java:505)

And a class cast exception:
Exception in thread "DistributorFlushTimerTask" java.lang.ClassCastException: java.util.UUID cannot be cast to org.onap.policy.apex.model.contextmodel.concepts.AxContextSchema

at org.onap.policy.apex.context.impl.distribution.AbstractDistributor.flush(AbstractDistributor.java:250)

at org.onap.policy.apex.context.impl.distribution.DistributorFlushTimerTask.run(DistributorFlushTimerTask.java:86)

at java.util.TimerThread.mainLoop(Timer.java:555)

at java.util.TimerThread.run(Timer.java:505)