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https://issues.apache.org/jira/browse/HBASE-14282?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14707177#comment-14707177
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Elliott Clark commented on HBASE-14282:
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bq.Until we actually switch away it's the best implementation option since
everything else uses them, and they are how we plumb metrics to JMX.
For sure. It's served us alright for now and I fully intend to add more. Just
as we get deeper and deeper into using it the more it's showing the stress.
> 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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