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https://issues.apache.org/jira/browse/HADOOP-6919?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13000606#comment-13000606
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Eric Yang commented on HADOOP-6919:
-----------------------------------
Thanks for clarified this. I am assuming when Apache Hadoop 0.22 is released,
it is going to have MetricsContext v1 instead of v2. HBase depends on the
exist hadoop metrics system (v1). This means hbase trunk should work with
Apache Hadoop 0.22. When revise for the current trunk (0.23), could you make
sure that MetricsContext is backward compatible? It would be good to give
them sometime in 0.23 time frame to make the switch. This ensures that HBase
can release independently, without tie to Hadoop 0.23 release schedule. Thanks
> Metrics2: metrics framework
> ---------------------------
>
> Key: HADOOP-6919
> URL: https://issues.apache.org/jira/browse/HADOOP-6919
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: metrics
> Affects Versions: 0.20.2
> Reporter: Luke Lu
> Assignee: Luke Lu
> Attachments: hadoop-6919-trunk-v1.patch
>
>
> The jira tracks the new metrics framework only changes, i.e., it doesn't
> track the instrumentation changes (and compatibility issues) to existing code.
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