[infinispan-issues] [JBoss JIRA] (ISPN-8632) ConflictManager can cause deadlock on cache shutdown

[Ryan Emerson (JIRA)]

Ryan Emerson created ISPN-8632:
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             Summary: ConflictManager can cause deadlock on cache shutdown
                 Key: ISPN-8632
                 URL: https://issues.jboss.org/browse/ISPN-8632
             Project: Infinispan
          Issue Type: Bug
          Components: Core
    Affects Versions: 9.2.0.Beta1
            Reporter: Ryan Emerson
            Assignee: Ryan Emerson
             Fix For: 9.2.0.Beta2


If stop is called on an EmbeddedCacheManager when the conflict resolution stage of a merge in ongoing, then it is impossible for ClusterCacheStatus::doLeave to proceed as ClusterCacheStatus::onPartitionMerge holds the ClusterCacheStatus lock. This is fine if conflict resolution completes successfully, however it is possible that the StateProviderImpl on the remote nodes has shutdown and therefore it's not possible for the ReplicaSpliterator to complete its execution and deadlock occurs.

To prevent the above scenario we should improve how the StateReceiverImpl and DefaultConflictManager handle stopping caches. Furthermore, we should also introduce a timeout when attempting to discover cache conflicts.



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