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computeMinVersion kept its Integer.MAX_VALUE sentinel when the connection set was empty, so mqadmin consumerProgress printed HighestVersion (2147483647) for idle consumer groups whose clients had all disconnected. Return 0 for an empty set instead.
RockteMQ-AI
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Sep 11, 2026
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Summary
Fix computeMinVersion to return 0 when the connection set is empty, instead of returning Integer.MAX_VALUE. A consumer group with no live connections should not be reported as having the highest version.
LGTM — clean edge case fix with test.
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Motivation
ConsumerConnection.computeMinVersionkept itsInteger.MAX_VALUEsentinel when the connection set was empty, somqadmin consumerProgressprintedHighestVersion (2147483647)for idle consumer groups whose clients had all disconnected.Modifications
Return 0 for an empty set instead.
Verification
Fail-before (new test, run against the unpatched code):
Pass-after: