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