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https://issues.apache.org/jira/browse/HBASE-4050?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alex Baranau updated HBASE-4050:
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Attachment: HBASE-4050.patch
Attached very first version of a patch.
Note: since HBase trunk points to 1.0.3 version of Hadoop, we cannot use fancy
annotations of metrics2 framework which were added later. But still things
should look clean. As far as I understand, if we decide to switch to using
annotations, we should be OK: external system will not notice the change.
Note2: I only added new metrics for HMaster so far.
As we agreed, I only integrated new framework, left old metrics as they are.
Hence, sorry for weird "V2"-postfixed names in this initial patch.
Also, as agreed, I've added only single metric to be exposed: cluster_requests.
Tried to add unit-test for it (wasn't very easy to test that metric, I have a
fear that this unit-test may fail sometimes because the fake request in this
test not the only one that can happen at the time of execution).
Anyhow, will work further on this.
> 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
> Priority: Critical
> Attachments: 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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