Yu Li updated HBASE-18469:
    Hadoop Flags: Reviewed
    Release Note: In HBASE-18469 we introduced a new RegionServer metrics in 
name of "totalRowActionRequestCount" which counts in all row actions and equals 
to the sum of "readRequestCount" and "writeRequestCount". Meantime, we have 
changed "totalRequestCount" to count only once for multi request, while 
previously we will count in action number of the request. As a result, existing 
monitoring system on totalRequestCount will still work but see a smaller value, 
and we strongly recommend to change to use the new metrics to monitor server 

Adding release note

> Correct  RegionServer metric of  totalRequestCount
> --------------------------------------------------
>                 Key: HBASE-18469
>                 URL: https://issues.apache.org/jira/browse/HBASE-18469
>             Project: HBase
>          Issue Type: Improvement
>          Components: metrics, regionserver
>    Affects Versions: 1.2.0
>            Reporter: Shibin Zhang
>            Assignee: Yu Li
>            Priority: Critical
>             Fix For: 2.0.0, 1.4.0
>         Attachments: HBASE-18469.patch, HBASE-18469.v2.patch, 
> HBASE-18469.v3.patch, HBASE-18469.v4.patch, HBASE-18469.v4.patch
> when i get the metric ,i found  this three metric may be have some error  as 
> follow :
>     "totalRequestCount" : 17541,
>     "readRequestCount" : 17483,
>     "writeRequestCount" : 1633,

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