Sandy Ryza created MAPREDUCE-5111:
-------------------------------------
Summary: Unnecessary RM address DNS lookup can cause unnecessary
slowness on every JHS page load
Key: MAPREDUCE-5111
URL: https://issues.apache.org/jira/browse/MAPREDUCE-5111
Project: Hadoop Map/Reduce
Issue Type: Improvement
Components: jobhistoryserver
Affects Versions: 2.0.3-alpha
Reporter: Sandy Ryza
Assignee: Sandy Ryza
When I run the job history server locally, every page load takes in the 10s of
seconds. I profiled the process and discovered that all the extra time was
spent inside YarnConfiguration#getRMWebAppURL, trying to resolve 0.0.0.0 to a
hostname. When I changed my yarn.resourcemanager.address to localhost, the
page load times decreased drastically.
There's no that we need to perform this resolution on every page load.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
