Feat[STATS]: Partition replication time #909
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@waldgange Can you put in the description what exact metric are you reporting? |
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Back to Anton for more research |
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Signed-off-by: Anton Pryakhin <apryakhin1@bloomberg.net>
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This PR introduces a new partition metric
e_PARTITION_REPLICATION_TIME_NS. It represents the time in nanoseconds it takes to store a message record at primary and replicate it to a majority of nodes in the cluster. We report average and maximum time during the report interval only from the primary node. The replication time is measured for both strong and eventual consistency modes. To make it possible we started collecting receipts from replicas regardless of the level of consistency. Also with this PR we stop reporting ACK time from primaries. Now we only do it from "first-hop" nodes