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Posted to yarn-issues@hadoop.apache.org by "Varun Saxena (JIRA)" <ji...@apache.org> on 2014/12/01 22:12:13 UTC

[jira] [Assigned] (YARN-2914) Potential race condition in ClientSCMMetrics#getInstance()

     [ https://issues.apache.org/jira/browse/YARN-2914?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Varun Saxena reassigned YARN-2914:
----------------------------------

    Assignee: Varun Saxena

> Potential race condition in ClientSCMMetrics#getInstance()
> ----------------------------------------------------------
>
>                 Key: YARN-2914
>                 URL: https://issues.apache.org/jira/browse/YARN-2914
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Ted Yu
>            Assignee: Varun Saxena
>            Priority: Minor
>
> {code}
>   public static ClientSCMMetrics getInstance() {
>     ClientSCMMetrics topMetrics = Singleton.INSTANCE.impl;
>     if (topMetrics == null) {
>       throw new IllegalStateException(
> {code}
> getInstance() doesn't hold lock on Singleton.this
> This may result in IllegalStateException being thrown prematurely.



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