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From "Dmitriy V. Ryaboy (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-11506) Configuration.get() is unnecessarily slow
Date Thu, 22 Jan 2015 22:40:36 GMT
Dmitriy V. Ryaboy created HADOOP-11506:

             Summary: Configuration.get() is unnecessarily slow
                 Key: HADOOP-11506
                 URL: https://issues.apache.org/jira/browse/HADOOP-11506
             Project: Hadoop Common
          Issue Type: Bug
            Reporter: Dmitriy V. Ryaboy

Profiling several large Hadoop jobs, we discovered that a surprising amount of time was spent
inside Configuration.get, more specifically, in regex matching caused by the substituteVars

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