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https://issues.apache.org/jira/browse/HBASE-19411?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16276028#comment-16276028
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Haibo Chen commented on HBASE-19411:
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Yes. From NM's perspective, the current behavior is that if somebody else
initializes DefaultMetricsSystem with a different prefix after us, all of NM's
metrics lose the 'nodemanager' prefix. Not sure what the right fix is.
> 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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