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https://issues.apache.org/jira/browse/HADOOP-19458?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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John Doe updated HADOOP-19458:
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Description: In `DefaultMetricsSystem`, if `miniClusterMode` is set to
false by other functions, `newSourceName` exits with a MetricsException (was:
The shared resource can be assigned to null, while another member method later
dereferences it without a null check. This can cause a runtime failure when
fencing operations are triggered.)
> MetricsException thrown since miniClusterMode off
> -------------------------------------------------
>
> Key: HADOOP-19458
> URL: https://issues.apache.org/jira/browse/HADOOP-19458
> Project: Hadoop Common
> Issue Type: Bug
> Affects Versions: 3.4.1
> Reporter: John Doe
> Priority: Major
>
> In `DefaultMetricsSystem`, if `miniClusterMode` is set to false by other
> functions, `newSourceName` exits with a MetricsException
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