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https://issues.apache.org/jira/browse/HADOOP-13699?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Wang resolved HADOOP-13699.
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Resolution: Fixed
Fix Version/s: 3.0.0-alpha2
Committed to trunk, thanks for reviewing Xiao!
> Configuration does not substitute multiple references to the same var
> ---------------------------------------------------------------------
>
> Key: HADOOP-13699
> URL: https://issues.apache.org/jira/browse/HADOOP-13699
> Project: Hadoop Common
> Issue Type: Bug
> Components: conf
> Affects Versions: 3.0.0-alpha1
> Reporter: Andrew Wang
> Assignee: Andrew Wang
> Priority: Critical
> Fix For: 3.0.0-alpha2
>
> Attachments: HADOOP-13699.001.patch
>
>
> Config var loop detection was originally introduced by HADOOP-6871. Due to
> cycle detection changes in the trunk patch for HADOOP-11506, resolution for
> multiple references to the same variable no longer resolved, e.g.
> {noformat}
> somekey = "${otherkey} ${otherkey}"
> {noformat}
> This loop detection business is fragile, expensive, and not in branch-2, so
> let's reduce it.
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