[hibernate-issues] [Hibernate-JIRA] Resolved: (HHH-6843) LockTest#testContendedPessimisticLock is too agressive in its assumptions

LockTest#testContendedPessimisticLock is too agressive in its assumptions ------------------------------------------------------------------------- Key: HHH-6843 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-6843 Project: Hibernate Core Issue Type: Bug Components: annotations, testsuite Affects Versions: 4.0.0.CR6 Reporter: Hardy Ferentschik Assignee: Hardy Ferentschik Fix For: 4.0.0.next The test assumes that if T1 gets a pessimistic write lock on some data without actually modifying it, a second transaction would actually block on a read of the same data. From a discussion w/ {quote} emmanuel: If transaction T1 calls lock(entity, LockModeType.PESSIMISTIC_READ) or lock(entity, LockModeType.PESSIMISTIC_WRITE)on an object, the entity manager must ensure that neither of the following phenomena can occur: [11:42am] emmanuel: - P1 (Dirty read): Transaction T1 modifies a row. Another transaction T2 then reads that row and obtains the modified value, before T1 has committed or rolled back. [11:42am] emmanuel: - P2 (Non-repeatable read): Transaction T1 reads a row. Another transaction T2 then modifies or deletes that row, before T1 has committed or rolled back. {quote} Currently _testContendedPessimisticLock_ tests condition P1, but makes the assumptions that the data does not even have to be modified.