Sandy Ryza created MAPREDUCE-5487: ------------------------------------- Summary: In task processes, JobConf is unnecessarily loaded again in Limits Key: MAPREDUCE-5487 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5487 Project: Hadoop Map/Reduce Issue Type: Improvement Components: performance, task Affects Versions: 2.1.0-beta Reporter: Sandy Ryza
Limits statically loads a JobConf, which incurs costs of reading files from disk and parsing XML. The contents of this JobConf are identical to the one loaded by YarnChild (before adding job.xml as a resource). Allowing Limits to initialize with the JobConf loaded in YarnChild would reduce task startup time. -- 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