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https://issues.apache.org/jira/browse/YARN-6263?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15892712#comment-15892712
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Haibo Chen commented on YARN-6263:
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Thanks [~jlowe] for the quick review!
> NMTokenSecretManagerInRM.createAndGetNMToken is not thread safe
> ---------------------------------------------------------------
>
> Key: YARN-6263
> URL: https://issues.apache.org/jira/browse/YARN-6263
> Project: Hadoop YARN
> Issue Type: Bug
> Components: yarn
> Affects Versions: 3.0.0-alpha2
> Reporter: Haibo Chen
> Assignee: Haibo Chen
> Attachments: YARN-6263.01.patch
>
>
> NMTokenSecretManagerInRM.createAndGetNMToken modifies values of a
> ConcurrentHashMap, which are of type HashTable, but it only acquires read
> lock.
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