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Status
Current state: Under VotingAccepted
Discussion thread: here
Vote Thread: here
JIRA: https://issues.apache.org/jira/browse/KAFKA-20223 here
Please keep the discussion on the mailing list rather than commenting on the wiki (wiki discussions get unwieldy fast).
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In combined mode (broker + controller on the same node), both sets of metrics are registered, but they share the same underlying LinuxIoMetricsCollector reading from the the same /proc/self/io, so the values reflect aggregate process-level I/O.
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