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  1. JBoss Enterprise Application Platform 4 and 5
  2. JBPAPP-5608

Problem with QueuedPessimisticEJBLock and Arjuna

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    Details

    • Type: Bug
    • Status: Closed (View Workflow)
    • Priority: Major
    • Resolution: Done
    • Affects Version/s: EAP 5.0.0
    • Fix Version/s: EAP_EWP 5.1.1
    • Component/s: System
    • Labels:
      None
    • Release Notes Text:
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      The QueuedPessimisticEJBLock in JBoss Transactions did not always detect that a waiting transaction had timed out, so the lock would remain active when it should have been released. This eventually resulted in a threadpool-wide lock, with all transactions waiting for the lock to release, or the locked transaction to be registered as timed out. The isTxExpired() method has been modified to ensure that timeouts are registered, so that transactions are informed of locks.
      Show
      The QueuedPessimisticEJBLock in JBoss Transactions did not always detect that a waiting transaction had timed out, so the lock would remain active when it should have been released. This eventually resulted in a threadpool-wide lock, with all transactions waiting for the lock to release, or the locked transaction to be registered as timed out. The isTxExpired() method has been modified to ensure that timeouts are registered, so that transactions are informed of locks.
    • Release Notes Docs Status:
      Documented as Resolved Issue

      Description

      When using Arjuna, QueuedPessimisticEJBLock does not always properly detect that a waiting tx has timed out. The problem is that QueuedPessimisticEJBLock was written for the old TM, which did not rollback transactions on timeout, but only marked them for rollback. Now that Arjuna is in play, it has to check for rolled back transactions too.

      The isTxExpired() method should be changed to something like this:

      protected boolean isTxExpired(Transaction miTx) throws Exception {
      if (miTx != null
      && (miTx.getStatus() == Status.STATUS_MARKED_ROLLBACK || miTx.getStatus() == Status.STATUS_ROLLEDBACK))

      { return true; }

      return false;
      }

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            Bug - A problem which impairs or prevents the functions of the product. JBPAPP-5607 Problem with QueuedPessimisticEJBLock and Arjuna

            • Major - A request that should be considered seriously but is not a show stopper.
            • Resolved
            incorporates

            Bug - A problem which impairs or prevents the functions of the product. JBAS-6348 Problem with QueuedPessimisticEJBLock and Arjuna

            • Major - A request that should be considered seriously but is not a show stopper.
            • Closed

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                People

                • Assignee:
                  istudens Ivo Studensky
                  Reporter:
                  bmaxwell Brad Maxwell
                  Writer:
                  Laura Bailey
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                  Dates

                  • Created:
                    Updated:
                    Resolved: