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https://issues.apache.org/jira/browse/HADOOP-14954?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Brahma Reddy Battula updated HADOOP-14954:
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Target Version/s: 3.4.0 (was: 3.3.0)
Bulk update: moved all 3.3.0 non-blocker issues, please move back if it is a
blocker.
> MetricsSystemImpl#init should increment refCount when already initialized
> -------------------------------------------------------------------------
>
> Key: HADOOP-14954
> URL: https://issues.apache.org/jira/browse/HADOOP-14954
> Project: Hadoop Common
> Issue Type: Bug
> Components: metrics
> Affects Versions: 2.7.0
> Reporter: John Zhuge
> Assignee: John Zhuge
> Priority: Minor
> Attachments: HADOOP-14954.001.patch, HADOOP-14954.002.patch,
> HADOOP-14954.002a.patch
>
>
> {{++refCount}} here in {{init}} should be symmetric to {{--refCount}} in
> {{shutdown}}.
> {code:java}
> public synchronized MetricsSystem init(String prefix) {
> if (monitoring && !DefaultMetricsSystem.inMiniClusterMode()) {
> LOG.warn(this.prefix +" metrics system already initialized!");
> return this;
> }
> this.prefix = checkNotNull(prefix, "prefix");
> ++refCount;
> {code}
> Move {{++refCount}} to the beginning of this method.
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