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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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Details

    • Bug
    • Resolution: Done
    • 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

    Description

      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)

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          is blocked by

          Bug - A problem that impairs or prevents the functions of the product. JBAS-8866 JBoss Cache lock UpgradeException when simultaneous requests with the same SSO create new sessions

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Reopened

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            People

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