[jbossts-issues] [JBoss JIRA] (JBTM-2409) XARecoveryModuleHelpersUnitTest hang

Michael Musgrove (JIRA) issues at jboss.org
Thu May 14 12:53:19 EDT 2015

Michael Musgrove created JBTM-2409:

             Summary: XARecoveryModuleHelpersUnitTest hang
                 Key: JBTM-2409
                 URL: https://issues.jboss.org/browse/JBTM-2409
             Project: JBoss Transaction Manager
          Issue Type: Bug
          Components: Recovery
    Affects Versions: 5.1.1
            Reporter: Michael Musgrove
            Assignee: Michael Musgrove
             Fix For: 5.next

The test checks that recovery helpers can be removed at the correct stages during recovery scans. The CI job http://albany.eng.hst.ams2.redhat.com/job/narayana-codeCoverage/196 shows the hang.

The junit test thread:
- starts 2 threads that will remove a recovery helper
- triggers xaRecoveryModule.periodicWorkFirstPass()
- triggers xaRecoveryModule.periodicWorkSecondPass()
- joins with remover threads

The jstack output shows:
- the two threads in the process of removing a recovery helper and are waiting for the first pass to finish;
- the junit test thread is waiting to join with these two threads;

Since both recovery passes must have completed it looks like the remover threads weren't notified when the first pass completed. 

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