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From "Chris Nauroth (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-12825) Log slow name resolutions
Date Sun, 28 Feb 2016 21:00:19 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-12825?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15171183#comment-15171183

Chris Nauroth commented on HADOOP-12825:

I see in git log that this patch has been committed to trunk, branch-2 and branch-2.8.  Can
we resolve the issue, or is there some other work remaining?

> Log slow name resolutions 
> --------------------------
>                 Key: HADOOP-12825
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12825
>             Project: Hadoop Common
>          Issue Type: Improvement
>            Reporter: Sidharta Seethana
>            Assignee: Sidharta Seethana
>         Attachments: HADOOP-12825.001.patch, HADOOP-12825.002.patch, getByName-call-graph.txt
> Logging slow name resolutions would be useful in identifying DNS performance issues in
a cluster. Most resolutions go through {{org.apache.hadoop.security.SecurityUtil.getByName}}
( see attached call graph ). Adding additional logging to this method would expose such issues.

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