metrics - Cassandra read latencies -


what difference between these read latency metrics?

org.apache.cassandra.metrics.clientrequest.read.latency org.apache.cassandra.metrics.columnfamily.system.batchlog.readlatency org.apache.cassandra.metrics.columnfamily.system.batchlog.coordinatorreadlatency org.apache.cassandra.metrics.columnfamily.system.batchlog.coordinatorscanlatency

the clientrequest latency coordinator, possibly including network latencies between cluster nodes. columnfamily metrics local time write memtable/commitlog or pull data sstables.


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