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Lei Guo commented on YARN-4001: ------------------------------- [~zhiguohong], can you share some number about the execution time in your profiling? > normalizeHostName takes too much of execution time > -------------------------------------------------- > > Key: YARN-4001 > URL: https://issues.apache.org/jira/browse/YARN-4001 > Project: Hadoop YARN > Issue Type: Improvement > Components: nodemanager, resourcemanager > Reporter: Hong Zhiguo > Assignee: Hong Zhiguo > Priority: Minor > > For each NodeHeartbeatRequest, NetUtils.normalizeHostName is called under a > lock. I did profiling for a very large cluster and found out > NetUtils.normalizeHostName takes most execution time of > ResourceTrackerService.nodeHeartbeat(...). > We'd better have an option to use raw IP (plus port) as the Node identity to > scale for large clusters. -- This message was sent by Atlassian JIRA (v6.3.4#6332)