Yufei Gu created YARN-7207:
------------------------------
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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