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  1. JBoss Enterprise Application Platform 4 and 5
  2. JBPAPP-5920

JBoss Cache lock UpgradeException when simultaneous requests with the same SSO create new sessions

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    • Icon: Bug Bug
    • Resolution: Done
    • Icon: Major Major
    • 4.3.0.GA_CP10
    • 4.2.0.GA_CP09, 4.3.0.GA_CP09
    • Clustering
    • None
    • Release Notes
    • Hide
      When more than one concurrent request with the same SSO ID attempted to create a session, some of the requests were failing with an org.jboss.cache.lock.UpgradeException. Improvements to the way concurrent requests are handled have been implemented in this release. Concurrent requests that create a session with the same SSO ID no longer fail.
      Show
      When more than one concurrent request with the same SSO ID attempted to create a session, some of the requests were failing with an org.jboss.cache.lock.UpgradeException. Improvements to the way concurrent requests are handled have been implemented in this release. Concurrent requests that create a session with the same SSO ID no longer fail.
    • Documented as Resolved Issue

      When more than one request with the same SSO ID creates a session at the same time, some may fail with an org.jboss.cache.lock.UpgradeException.

      [org.jboss.web.tomcat.service.sso.TreeCacheSSOClusterManager] caught exception adding session C4851CD53FB091272E78A9395C0C15F1 to SSO id 821E74E80D46822B77FB774E8AEF67D8
      ...
      Caused by: org.jboss.cache.lock.UpgradeException: failure upgrading lock: fqn=/SSO/821E74E80D46822B77FB774E8AEF67D8/sessions, caller=GlobalTransaction:<10.0.0.1:61628>:4, lock=read owners=[GlobalTransaction:<10.0.0.1:61628>:4, GlobalTransaction:<10.0.0.1:61628>:5] (activeReaders=1, activeWriter=null, waitingReaders=0, waitingWriters=1, waitingUpgrader=1)
      at org.jboss.cache.Node.acquire(Node.java:517)
      ...
      Caused by: org.jboss.cache.lock.UpgradeException: acquireWriteLock(): lock upgrade failed for /SSO/821E74E80D46822B77FB774E8AEF67D8/sessions (caller=GlobalTransaction:<10.0.0.1:61628>:4, lock info: read owners=[GlobalTransaction:<10.0.0.1:61628>:4, GlobalTransaction:<10.0.0.1:61628>:5] (activeReaders=1, activeWriter=null, waitingReaders=0, waitingWriters=1, waitingUpgrader=1))
      ...
      Caused by: org.jboss.cache.lock.UpgradeException: upgradeLockAttempt(): more than one reader trying to simultaneously upgrade to write lock
      at org.jboss.cache.lock.ReadWriteLockWithUpgrade.upgradeLockAttempt(ReadWriteLockWithUpgrade.java:106)
      at org.jboss.cache.lock.LockStrategyRepeatableRead.upgradeLockAttempt(LockStrategyRepeatableRead.java:43)
      at org.jboss.cache.lock.IdentityLock.acquireWriteLock(IdentityLock.java:175)

              rhn-support-dereed Dennis Reed
              rhn-support-dereed Dennis Reed
              Jared Morgan Jared Morgan (Inactive)
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                Created:
                Updated:
                Resolved: