[hibernate-issues] [Hibernate-JIRA] Resolved: (HHH-6689) DefaultMergeEventListener changes CheckNullability flag - not thread save

DefaultMergeEventListener changes CheckNullability flag - not thread save ------------------------------------------------------------------------- Key: HHH-6689 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-6689 Project: Hibernate ORM Issue Type: Bug Components: core Affects Versions: 3.6.5 Environment: Websphere Application Server 7.0, DB2, Windows Server, Hibernate 3.6.5 Reporter: John SMith Assignee: Gail Badner Labels: hibernate Fix For: 4.1.0 saveTransientEntity() method saves the CheckNullability setting, changes it using the getFactory().getSettings().setCheckNullability method, and does save processing. After save processing, the saved value is restored. During load testing, we have had situations where the CheckNullability becomes set to TRUE and causes failures because of null checks. It has been difficult to debug, but it appears that this is not thread safe - multiple threads accessing this method can change the value of this setting. It can also be that a database error can cause an exception that will cause the checkNullability flan not to be reset.