[jira] [Created] (HBASE-14082) Add replica id to JMX metrics names

["Lei Chen (JIRA)" <ji...@apache.org>]

Lei Chen created HBASE-14082:
--------------------------------

             Summary: Add replica id to JMX metrics names
                 Key: HBASE-14082
                 URL: https://issues.apache.org/jira/browse/HBASE-14082
             Project: HBase
          Issue Type: Improvement
          Components: metrics
            Reporter: Lei Chen
            Assignee: Lei Chen


Today, via JMX, one cannot distinguish a primary region from a replica. A possible solution is to add replica id to JMX metrics names. The benefits may include, for example:
# Knowing the latency of a read request on a replica region means the first attempt to the primary region has timeout.
# Write requests on replicas are due to the replication process, while the ones on primary are from clients.
# In case of looking for hot spots of read operations, replicas should be excluded since TIMELINE reads are sent to all replicas.

To implement, we can change the format of metrics names found at {code}Hadoop->HBase->RegionServer->Regions->Attributes{code}
from 
{code}namespace_<namespace>_table_<tablename>_region_<regionname>_metric_<metricname>{code}
to
{code}namespace_<namespace>_table_<tablename>_region_<regionname>_replicaid_<replicaid>_metric_<metricname>{code}




--
This message was sent by Atlassian JIRA
(v6.3.4#6332)