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From "Zhihong Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4050) Update HBase metrics framework to metrics2 framework
Date Sat, 07 Jul 2012 14:18:35 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4050?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13408680#comment-13408680
] 

Zhihong Ted Yu commented on HBASE-4050:
---------------------------------------

bq. How soon do you think HBase can leave off dependency on hadoop 1.0?
hadoop 1.0 is considered the stable release in the near future. We have to accommodate both
hadoop 1.0 and hadoop 2.0
Certain form of shim would be needed.
Take a look at src/main/java/org/apache/hadoop/hbase/util/ShutdownHookManager.java which I
introduced in HBASE-5963

I will send out a poll on dev@ list for when old metrics should be removed.
                
> 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, 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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