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Posted to common-issues@hadoop.apache.org by "Andrew Wang (JIRA)" <ji...@apache.org> on 2016/10/07 23:07:20 UTC

[jira] [Created] (HADOOP-13699) Configuration does not substitute multiple references to the same var

Andrew Wang created HADOOP-13699:
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             Summary: 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


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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