Hazelcast Warning spamming the log files

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    • Type: Bug
    • Resolution: Unresolved
    • Priority: Low
    • None
    • Affects Version/s: 9.2.20
    • Component/s: Data Center - Core
    • None
    • 1
    • Severity 3 - Minor

      Issue Summary

      Hazelcast Warning spamming the atlassian confluence.log files

      Steps to Reproduce

      1. Install Confluence Single node clustered instance 9.2.20
      2. Observe the atlassian.confluence.log file on Confluence startup

      Expected Results

      No Warning messages observed

      Actual Results

      The below messages in the atlassian-confluence.log file:
      WARNING 1

      2026-05-28 06:22:01,204 WARN [Catalina-utility-1] [hazelcast.instance.impl.HazelcastInstanceFactory] log WARNING: Classpath misconfiguration: found multiple META-INF/services/com.hazelcast.instance.impl.NodeExtension r
esources: jar:file:/opt/atlassian/confluence/confluence/WEB-INF/lib/com.hazelcast.hazelcast-5.3.6.jar!/META-INF/services/com.hazelcast.instance.impl.NodeExtension, jar:file:/opt/atlassian/confluence/confluence/WEB-INF/
lib/com.atlassian.confluence.cache.confluence-cache-hazelcast-9.2.19.jar!/META-INF/services/com.hazelcast.instance.impl.NodeExtension
2026-05-28 06:22:02,490 WARN [Catalina-utility-1] [com.hazelcast.cp.CPSubsystem] log [172.50.0.5]:5801 [confluence-126401] [5.3.6] CP Subsystem is not enabled. CP data structures will operate in UNSAFE mode! Please not
e that UNSAFE mode will not provide strong consistency guarantees.

      WARNING 2

      2026-05-29 08:51:00,472 WARN [Catalina-utility-1] [atlassian.hazelcast.micrometer.JmxBinder] bind No objects found for pattern com.hazelcast:type=HazelcastInstance.ConnectionManager,*
2026-05-29 08:51:00,473 WARN [Catalina-utility-1] [atlassian.hazelcast.micrometer.JmxBinder] bind No objects found for pattern com.hazelcast:type=HazelcastInstance.EventService,*
2026-05-29 08:51:00,474 WARN [Catalina-utility-1] [atlassian.hazelcast.micrometer.JmxBinder] bind No objects found for pattern com.hazelcast:type=HazelcastInstance.OperationService,*
2026-05-29 08:51:00,474 WARN [Catalina-utility-1] [atlassian.hazelcast.micrometer.JmxBinder] bind No objects found for pattern com.hazelcast:type=HazelcastInstance.PartitionServiceMBean,*
2026-05-29 08:51:00,475 WARN [Catalina-utility-1] [atlassian.hazelcast.micrometer.JmxBinder] bind No objects found for pattern com.hazelcast:type=HazelcastInstance.ManagedExecutorService,*

      Workaround

      Confluence 10.2 uses netcluster instead of hazelcast, where no errors are not observed

              Assignee:
              Unassigned
              Reporter:
              Shivangi Nayak
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              0 Vote for this issue
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                Created:
                Updated: