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https://issues.apache.org/jira/browse/YARN-3768?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14582962#comment-14582962
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zhihai xu commented on YARN-3768:
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I uploaded a patch YARN-3768.000.patch which use {{cEnv.split("=", -1)}} to
parse the string, so trailing empty strings won't be discarded.
It will also skip bad format environment variable.
> Index out of range exception with environment variables without values
> ----------------------------------------------------------------------
>
> Key: YARN-3768
> URL: https://issues.apache.org/jira/browse/YARN-3768
> Project: Hadoop YARN
> Issue Type: Bug
> Components: yarn
> Affects Versions: 2.5.0
> Reporter: Joe Ferner
> Assignee: zhihai xu
> Attachments: YARN-3768.000.patch
>
>
> Looking at line 80 of org.apache.hadoop.yarn.util.Apps an index out of range
> exception occurs if an environment variable is encountered without a value.
> I believe this occurs because java will not return empty strings from the
> split method. Similar to this
> http://stackoverflow.com/questions/14602062/java-string-split-removed-empty-values
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