Add committed offset in stream stats #15225
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acogoluegnes
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The committed offset (offset of the last entry in the stream) is now available in Osiris. It is used instead of the "committed chunk ID" where appropriate: to calculate the offset lag and the number of available messages. It is more accurate to use the committed offset for the offset lag than to use the committed chunk ID. Before: offset lag = committed chunk ID - ID of the last dispatched chunk Now: offset lag = committed offset - offset of the last message in the last dispatched chunk This commit introduces the stream_committed_offset feature flag to enable the calculation of the committed offset in Osiris only when all the nodes have been migrated. The streams need to be restarted as the feature is enabled when starting the writer and the replicas. References rabbitmq/osiris#203
When not all counters are wanted, instead of osiris_counters:overview/1, which loads all the counters.
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