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https://issues.apache.org/jira/browse/YARN-3464?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14485818#comment-14485818
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Karthik Kambatla commented on YARN-3464:
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We can may be discuss this more on YARN-3465, but I don't think having it
sorted is necessary. The container can not be started until all the resources
are localized; so, the order of their downloads shouldn't matter as long as
they all get localized.
> Race condition in LocalizerRunner causes container localization timeout.
> ------------------------------------------------------------------------
>
> Key: YARN-3464
> URL: https://issues.apache.org/jira/browse/YARN-3464
> Project: Hadoop YARN
> Issue Type: Bug
> Components: nodemanager
> Reporter: zhihai xu
> Assignee: zhihai xu
> Priority: Critical
>
> Race condition in LocalizerRunner causes container localization timeout.
> Currently LocalizerRunner will kill the ContainerLocalizer when pending list
> for LocalizerResourceRequestEvent is empty.
> {code}
> } else if (pending.isEmpty()) {
> action = LocalizerAction.DIE;
> }
> {code}
> If a LocalizerResourceRequestEvent is added after LocalizerRunner kill the
> ContainerLocalizer due to empty pending list, this
> LocalizerResourceRequestEvent will never be handled.
> Without ContainerLocalizer, LocalizerRunner#update will never be called.
> The container will stay at LOCALIZING state, until the container is killed by
> AM due to TASK_TIMEOUT.
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