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From "Sidharta Seethana (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-12825) Log slow name resolutions
Date Fri, 19 Feb 2016 01:04:18 GMT
Sidharta Seethana created HADOOP-12825:
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             Summary: 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


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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