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https://issues.apache.org/jira/browse/HBASE-14282?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14707176#comment-14707176
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Elliott Clark commented on HBASE-14282:
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bq.Why sir? That'd be a major stickler.
All of the different metrics libraries I know of organize mbeans differently
and none of the others organize them in the same way as metrics2 from hadoop.
> Remove metrics2
> ---------------
>
> Key: HBASE-14282
> URL: https://issues.apache.org/jira/browse/HBASE-14282
> Project: HBase
> Issue Type: Improvement
> Components: metrics
> Reporter: Elliott Clark
> Priority: Critical
> Fix For: 2.0.0
>
>
> Metrics2 has a whole bunch of race conditions and weird edges because of all
> of the caching that metrics2 does.
> Additionally tying something so integral to hadoop who has lots of versions
> we support has been a maintenance nightmare. It would allow us to completely
> get rid of the compat modules.
> Rip it out.
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