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https://issues.apache.org/jira/browse/HBASE-19411?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16275981#comment-16275981
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Mike Drob commented on HBASE-19411:
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I'm a little confused here. If somebody else sets up metrics before us, then
does that mean all of our metrics lose the hbase prefix with this patch?
> HBase should not override the Metrics System prefix if one exists already
> -------------------------------------------------------------------------
>
> Key: HBASE-19411
> URL: https://issues.apache.org/jira/browse/HBASE-19411
> Project: HBase
> Issue Type: Bug
> Reporter: Haibo Chen
> Assignee: Ted Yu
> Attachments: 19411.v1.txt
>
>
> Currently the following code in BaseSourceImpl is executed unconditionally:
> {code}
> MetricsSystem metricsSys = DefaultMetricsSystem.instance();
> {code}
> As [~haibo.chen] pointed out in HBASE-19409, this would override the Metrics
> System prefix for the one NM has set up previously.
> This issue is to avoid such override.
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