I am using ActiveMQ 5.3 with persistent messages through a MySQL database and 
recently had a repeating error occur in the wrapper.log file.  When I stopped 
ActiveMQ, there were a few messages in the database.  When ActiveMQ was started 
I noticed the error below occur once the number of messages in the database 
went below the value when ActiveMQ was started.  I was just wondering if this 
was normal.  I restarted ActiveMQ again and before I started the service I made 
sure there were no messages in the ACTIVEMQ_MSGS table.  Since the restart, I 
haven't see the error in the wrapper.log file.  Thank you.

java.lang.NegativeArraySizeException
at 
org.apache.activemq.openwire.v5.BaseDataStreamMarshaller.looseUnmarshalByteSequence(BaseDataStreamMarshaller.java:639)
at 
org.apache.activemq.openwire.v5.MessageMarshaller.looseUnmarshal(MessageMarshaller.java:229)
at 
org.apache.activemq.openwire.v5.ActiveMQMessageMarshaller.looseUnmarshal(ActiveMQMessageMarshaller.java:101)
at 
org.apache.activemq.openwire.v5.ActiveMQObjectMessageMarshaller.looseUnmarshal(ActiveMQObjectMessageMarshaller.java:101)
at 
org.apache.activemq.openwire.OpenWireFormat.doUnmarshal(OpenWireFormat.java:368)
at 
org.apache.activemq.openwire.OpenWireFormat.unmarshal(OpenWireFormat.java:207)
at 
org.apache.activemq.store.jdbc.JDBCMessageStore$2.recoverMessage(JDBCMessageStore.java:218)
at 
org.apache.activemq.store.jdbc.adapter.DefaultJDBCAdapter.doRecoverNextMessages(DefaultJDBCAdapter.java:750)
at 
org.apache.activemq.store.jdbc.JDBCMessageStore.recoverNextMessages(JDBCMessageStore.java:214)
at 
org.apache.activemq.store.ProxyMessageStore.recoverNextMessages(ProxyMessageStore.java:87)
at 
org.apache.activemq.broker.region.cursors.QueueStorePrefetch.doFillBatch(QueueStorePrefetch.java:81)
at 
org.apache.activemq.broker.region.cursors.AbstractStoreCursor.fillBatch(AbstractStoreCursor.java:227)
at 
org.apache.activemq.broker.region.cursors.AbstractStoreCursor.hasNext(AbstractStoreCursor.java:134)
at 
org.apache.activemq.broker.region.cursors.StoreQueueCursor.hasNext(StoreQueueCursor.java:131)
at org.apache.activemq.broker.region.Queue.doPageIn(Queue.java:1364)
at org.apache.activemq.broker.region.Queue.pageInMessages(Queue.java:1503)
at org.apache.activemq.broker.region.Queue.iterate(Queue.java:1178)
at 
org.apache.activemq.thread.DeterministicTaskRunner.runTask(DeterministicTaskRunner.java:84)
at 
org.apache.activemq.thread.DeterministicTaskRunner$1.run(DeterministicTaskRunner.java:41)
at 
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)

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