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https://issues.apache.org/jira/browse/HADOOP-11506?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gera Shegalov updated HADOOP-11506:
-----------------------------------
    Attachment:     (was: HADOOP-11506.002.patch)

> 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
>            Assignee: Gera Shegalov
>         Attachments: HADOOP-11506.001.patch
>
>
> 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 call.



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