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https://issues.apache.org/jira/browse/HADOOP-10169?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13854599#comment-13854599
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Jing Zhao commented on HADOOP-10169:
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+1 for the latest patch. Thanks for cleaning the code, Liang Xie! And thanks to
Jason for the review! I will commit it shortly.
> remove the unnecessary synchronized in JvmMetrics class
> --------------------------------------------------------
>
> Key: HADOOP-10169
> URL: https://issues.apache.org/jira/browse/HADOOP-10169
> Project: Hadoop Common
> Issue Type: Improvement
> Components: metrics
> Affects Versions: 3.0.0, 2.2.0
> Reporter: Liang Xie
> Assignee: Liang Xie
> Priority: Minor
> Attachments: HADOOP-10169-v2.txt, HADOOP-10169-v3.txt,
> HADOOP-10169-v4.txt, HADOOP-10169.txt
>
>
> When i looked into a HBase JvmMetric impl, just found this synchronized seems
> not essential.
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