Add metrics for read/write throughput (#cells, #bytes)
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Key: HBASE-4392
URL: https://issues.apache.org/jira/browse/HBASE-4392
Project: HBase
Issue Type: Improvement
Components: metrics, regionserver
Affects Versions: 0.94.0
Reporter: Todd Lipcon
Fix For: 0.94.0
Most of our metrics are currently based on RPC count. This is an inaccurate
metric since some RPCs can be much more heavy weight than others. We should
maintain our current metrics but also add counters for bytes and cells inserted
/ scanned. That gives a better idea of total load.
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