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Posted to common-issues@hadoop.apache.org by "Jason Lowe (JIRA)" <ji...@apache.org> on 2013/04/26 15:50:18 UTC

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

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

Jason Lowe updated HADOOP-9504:
-------------------------------

    Summary: MetricsDynamicMBeanBase has concurrency issues in createMBeanInfo  (was: create metricsRateAttributeMod with ConcurrentHashMap to avoid hashmap concurrent race)

Updating the summary to describe the issue rather than the solution.
                
> 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
>         Attachments: 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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