[jira] [Created] (HBASE-9215) Allow region server metrics to be collected on a periodic basis

["Ted Yu (JIRA)" <ji...@apache.org>]

Ted Yu created HBASE-9215:
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             Summary: Allow region server metrics to be collected on a periodic basis
                 Key: HBASE-9215
                 URL: https://issues.apache.org/jira/browse/HBASE-9215
             Project: HBase
          Issue Type: Improvement
            Reporter: Ted Yu


0.94 provides the following metrics w.r.t. read / write latencies:
{code}
hbase.regionserver.fsReadLatencyHistogram_75th_percentile
hbase.regionserver.fsReadLatencyHistogram_95th_percentile
hbase.regionserver.fsReadLatencyHistogram_99th_percentile
hbase.regionserver.fsReadLatencyHistogram_max
hbase.regionserver.fsReadLatencyHistogram_mean
hbase.regionserver.fsReadLatencyHistogram_median
hbase.regionserver.fsReadLatencyHistogram_min
hbase.regionserver.fsReadLatencyHistogram_num_ops
hbase.regionserver.fsReadLatencyHistogram_std_dev
hbase.regionserver.fsReadLatency_avg_time
hbase.regionserver.fsReadLatency_num_ops
hbase.regionserver.fsSyncLatency_avg_time
hbase.regionserver.fsSyncLatency_num_ops
hbase.regionserver.fsWriteLatencyHistogram_75th_percentile
hbase.regionserver.fsWriteLatencyHistogram_95th_percentile
hbase.regionserver.fsWriteLatencyHistogram_99th_percentile
hbase.regionserver.fsWriteLatencyHistogram_max
hbase.regionserver.fsWriteLatencyHistogram_mean
hbase.regionserver.fsWriteLatencyHistogram_median
hbase.regionserver.fsWriteLatencyHistogram_min
hbase.regionserver.fsWriteLatencyHistogram_num_ops
hbase.regionserver.fsWriteLatencyHistogram_std_dev
hbase.regionserver.fsWriteLatency_avg_time
hbase.regionserver.fsWriteLatency_num_ops
{code}
The above is collected in doUpdates() which is called periodically.

In 0.95 / trunk, I don't see facility for periodically updating metrics.
This should be supported.

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