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Posted to yarn-dev@hadoop.apache.org by "Yufei Gu (JIRA)" <ji...@apache.org> on 2017/09/15 21:59:00 UTC

[jira] [Created] (YARN-7207) Cache the local host name when getting application list in RM

Yufei Gu created YARN-7207:
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             Summary: Cache the local host name when getting application list in RM
                 Key: YARN-7207
                 URL: https://issues.apache.org/jira/browse/YARN-7207
             Project: Hadoop YARN
          Issue Type: Improvement
          Components: RM
    Affects Versions: 3.1.0
            Reporter: Yufei Gu
            Assignee: Yufei Gu


{{getLocalHostName()}} is invoked for generating the report for each application, which means it is called 1000 times for each {{getApplications()}} if there are 1000 apps in RM. Some user got a performance issue when {{getLocalHostName()}} is slow under some network envs.



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