[jboss-user] [JBoss Cache: Core Edition] - Re: on child insert parent, child collection updated in DB b

[bstansberry@jboss.com]

"dukehoops" wrote : OK, I wired up DualNodeJtaTransactionManagerImpl. The test now passes if UserCount is below 4 or less, at 5 or above the test fails. However, the failure I am seeing with this test is NOT the same as with the test in our environment. It is this:
  | 
  | anonymous wrote : -------------------------------------------------------------------------------
  |   | Test set: org.hibernate.test.cache.jbc2.functional.MVCCConcurrentWriteTest
  |   | -------------------------------------------------------------------------------
  |   | Tests run: 6, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 182.113 sec <<< FAILURE!
  |   | testManyUsers(org.hibernate.test.cache.jbc2.functional.MVCCConcurrentWriteTest)  Time elapsed: 165.831 sec  <<< FAILURE!
  |   | junit.framework.AssertionFailedError: Timed out waiting for user threads to finish. Their state at the time of forced shutdown: TEST CONFIG [userCount=5, iterationsPerUser=40, thinkTimeMillis=10]  STATE of UserRunners: org.hibernate.test.cache.jbc2.functional.MVCCConcurrentWriteTest$UserRunner at ffc3eb[customerId=4 iterationsCompleted=30 completedAll=false causeOfFailure=org.hibernate.cache.CacheException: org.hibernate.cache.CacheException: org.jboss.cache.lock.TimeoutException: Unable to acquire lock on Fqn [/TS/test/org/hibernate/cache/UpdateTimestampsCache/Contacts] after [15000] milliseconds for requestor [Thread[UserRunnerThread-4,5,main]]! Lock held by [GlobalTransaction::903]
  |   | 	at ...
  |   | 
  |   | 

I missed this UpdateTimestampsCache detail last week. Another user has reported a similar lock conflict over the UpdateTimestampsCache -- see http://www.jboss.org/index.html?module=bb&op=viewtopic&t=152079.  With your test I should be able to reproduce.  There shouldn't be long-lived locks held on the UpdateTimestampsCache; if there are it's a bug.

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