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  1. WildFly
  2. WFLY-15342

EJB Timers out of sync within cluster causing inexistent timer to be triggered

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Details

    • Bug
    • Status: Closed (View Workflow)
    • Major
    • Resolution: Done
    • None
    • 25.0.0.Final
    • EJB
    • None

    Description

      In cluster environment when the ejb timers based on database store happens if the refresh interval is not small enough this scenario could happen:

      Refreshing interval time (R)

      Node 1 : creates an ejb timer at time T with expire date E.
      Node 2 : tries to cancel an ejb timer within the interval [T, T+ R[

      what happens is that any of the nodes could trigger at T + E the timer because the node 2 did not know the existance of the ejb timer node 1 created before the interval of refreshing.

      This affects PAM product in cluster environment as we rely on ejb timers for timer features.

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              cfang@redhat.com Cheng Fang
              cfang@redhat.com Cheng Fang
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                Created:
                Updated:
                Resolved: