[jira] [Reopened] (HADOOP-9504) MetricsDynamicMBeanBase has concurrency issues in createMBeanInfo

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[jira] [Reopened] (HADOOP-9504) MetricsDynamicMBeanBase has concurrency issues in createMBeanInfo

Nick Burch (Jira)

     [ https://issues.apache.org/jira/browse/HADOOP-9504?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Matt Foley reopened HADOOP-9504:
--------------------------------


Reopened for submission to branch-1.2, per email from [~jlowe] on common-dev@, Sun, May 12, 2013 at 6:23 PM.
               

> MetricsDynamicMBeanBase has concurrency issues in createMBeanInfo
> -----------------------------------------------------------------
>
>                 Key: HADOOP-9504
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9504
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: metrics
>    Affects Versions: 3.0.0, 2.0.3-alpha
>            Reporter: Liang Xie
>            Assignee: Liang Xie
>            Priority: Critical
>             Fix For: 2.0.5-beta, 0.23.8
>
>         Attachments: HADOOP-9504-branch-1.txt, HADOOP-9504.txt, HADOOP-9504-v2.txt
>
>
> Please see HBASE-8416 for detail information.
> we need to take care of the synchronization for HashMap put(), otherwise it may lead to spin loop.

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