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https://issues.apache.org/jira/browse/YARN-2042?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13994683#comment-13994683
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Chen He commented on YARN-2042:
-------------------------------
string.isEmpty() is supported by Java 1.6 and later. For compatibility,
"string.length != 0" may be the most efficient way. Patch is provided.
> String shouldn't be compared using == in
> QueuePlacementRule#NestedUserQueue#getQueueForApp()
> --------------------------------------------------------------------------------------------
>
> Key: YARN-2042
> URL: https://issues.apache.org/jira/browse/YARN-2042
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: Ted Yu
> Assignee: Chen He
> Priority: Minor
> Attachments: YARN-2042.patch
>
>
> {code}
> if (queueName != null && queueName != "") {
> {code}
> queueName.isEmpty() should be used instead of comparing against ""
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