Hi, The namespace handling methods in o.a.j.common.AbstractSession are synchronized. There is a reference to https://issues.apache.org/jira/browse/JCR-1793 in the code about it. The fact that namespace handling is synchronized on the Session causes deadlocks in our code that use synchronaeous observations. E.g. if 'something' else during the synchronaeous event dispatching tries to do a getNamespacePrefix() or a getNamespaceURI() it can cause a deadlock. Would it be an options to use a SynchronizedMap instead of synchronizing the methods? Or are there some other reasons why the synchronization is done explicitly on the Session?
Regards, Bart
