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https://issues.apache.org/jira/browse/HBASE-4050?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13413356#comment-13413356
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Zhihong Ted Yu commented on HBASE-4050:
---------------------------------------
{code}
+public interface BaseMetricsSource {
{code}
I suggest adding the following for above interface:
{code}
@InterfaceAudience.Public
@InterfaceStability.Evolving
{code}
{code}
+ * Subtract some amount to a gauge.
{code}
'to a' -> 'from a'
{code}
+ rms =
ServiceLoader.load(ReplicationMetricsSource.class).iterator().next();
{code}
Shall we traverse the iterator and warn user if there are more than one
implementation found ?
Will continue on the review board.
> Update HBase metrics framework to metrics2 framework
> ----------------------------------------------------
>
> Key: HBASE-4050
> URL: https://issues.apache.org/jira/browse/HBASE-4050
> Project: HBase
> Issue Type: New Feature
> Components: metrics
> Affects Versions: 0.90.4
> Environment: Java 6
> Reporter: Eric Yang
> Assignee: Alex Baranau
> Priority: Critical
> Fix For: 0.96.0
>
> Attachments: 4050-metrics-v2.patch, 4050-metrics-v3.patch,
> HBASE-4050-0.patch, HBASE-4050-1.patch, HBASE-4050-2.patch,
> HBASE-4050-3.patch, HBASE-4050-5.patch, HBASE-4050.patch
>
>
> Metrics Framework has been marked deprecated in Hadoop 0.20.203+ and 0.22+,
> and it might get removed in future Hadoop release. Hence, HBase needs to
> revise the dependency of MetricsContext to use Metrics2 framework.
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