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From "Luke Lu (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-7529) Possible deadlock in metrics2
Date Tue, 09 Aug 2011 00:48:27 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-7529?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Luke Lu updated HADOOP-7529:
----------------------------

    Attachment: hadoop-7529-v1.patch

Though it's unlikely to happen in practice (metrics system initialization usually doesn't
overlap with metrics source registration), it's probably worth fixing. The v1 patch make metrics
impl in the DefaultMetricsSystem an AtomicReference.

> Possible deadlock in metrics2
> -----------------------------
>
>                 Key: HADOOP-7529
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7529
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: metrics
>    Affects Versions: 0.23.0
>            Reporter: Todd Lipcon
>            Priority: Critical
>             Fix For: 0.23.0
>
>         Attachments: hadoop-7529-v1.patch, metrics-deadlock.png
>
>
> Lock cycle detected by jcarder between MetricsSystemImpl and DefaultMetricsSystem

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