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  1. AMQ Broker
  2. ENTMQBR-3639

[LTS] Broker logs "quorum" messages even when there is no cluster

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      Previously, a live-backup broker group might display messages relating to quorum voting even if the group was not part of a cluster, or if there were fewer than three live-backup groups running in the cluster. Quorum voting is a process used by *clustered* brokers that are configured to use the replication high-availability policy. Quorum voting also requires a minimum of three live-backup broker groups to be running in the cluster. This issue is now resolved. A live-backup group does not display messages relating to quorum voting if either of these conditions is not true.
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      Previously, a live-backup broker group might display messages relating to quorum voting even if the group was not part of a cluster, or if there were fewer than three live-backup groups running in the cluster. Quorum voting is a process used by *clustered* brokers that are configured to use the replication high-availability policy. Quorum voting also requires a minimum of three live-backup broker groups to be running in the cluster. This issue is now resolved. A live-backup group does not display messages relating to quorum voting if either of these conditions is not true.
    • Documented as Resolved Issue
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      Just define a master and a slave with network links between them, and look in the broker logs.

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      Just define a master and a slave with network links between them, and look in the broker logs.

    Description

      When two brokers form a master-slave pair, not part of a formal cluster definition with a quorum, their logs still show messages related quorum voting and failover:

      2020-02-28 08:11:11,365 INFO  [org.apache.activemq.artemis.core.server] AMQ221066: Initiating quorum vote: LiveFailoverQuorumVote
2020-02-28 08:11:11,365 INFO  [org.apache.activemq.artemis.core.server] AMQ221067: Waiting 30 seconds for quorum vote results.
2020-02-28 08:11:11,367 INFO  [org.apache.activemq.artemis.core.server] AMQ221068: Received all quorum votes.

      These messages are produced even though the broker pair isn't part of a cluster, and one (pair) can't be a quorum of anything.

      I'm assured that these messages are harmless, but they are very confusing when trying to troubleshoot HA problems, and they scare customers. I understand that it would be possible to suppress them when there is only one broker pair, and I think this would be a useful fix.

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          Bug - A problem that impairs or prevents the functions of the product. ENTMQBR-3335 Broker logs "quorum" messages even when there is no cluster

          • 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.
          • Closed

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              rh-ee-ataylor Andy Taylor
              fnigro Francesco Nigro
              Tiago Bueno Tiago Bueno
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