Loss of cluster elder can result in loss of whole cluster
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Key: QPID-3369
URL: https://issues.apache.org/jira/browse/QPID-3369
Project: Qpid
Issue Type: Bug
Components: C++ Clustering
Affects Versions: 0.7
Reporter: Jason Dillaman
Assignee: Alan Conway
Attachments: QPID-3369.patch
If the cluster elder is lost, it is possible that the remaining nodes of the
cluster will fail with the following errors:
Error delivering frames: Cluster timer wakeup non-existent task
ManagementAgent::periodicProcessing (qpid/cluster/ClusterTimer.cpp:93)
-- or --
Error delivering frames: Cluster timer drop non-existent task
ManagementAgent::periodicProcessing (qpid/cluster/ClusterTimer.cpp:109)
When a member is promoted to be the elder, the ClusterTimer::becomeElder()
method will add all the current cluster tasks to the Timer. However, there is
a potential race condition where CPG can deliver the timer wakeup from the
original elder.
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