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Hong Zhiguo commented on YARN-4024: ----------------------------------- Thanks for your good point. Yes I can do it. Should I reopen this issue and post a new patch? > YARN RM should avoid unnecessary resolving IP when NMs doing heartbeat > ---------------------------------------------------------------------- > > Key: YARN-4024 > URL: https://issues.apache.org/jira/browse/YARN-4024 > Project: Hadoop YARN > Issue Type: Improvement > Components: resourcemanager > Reporter: Wangda Tan > Assignee: Hong Zhiguo > Fix For: 2.8.0 > > Attachments: YARN-4024-draft-v2.patch, YARN-4024-draft-v3.patch, > YARN-4024-draft.patch, YARN-4024-v4.patch, YARN-4024-v5.patch, > YARN-4024-v6.patch, YARN-4024-v7.patch > > > Currently, YARN RM NodesListManager will resolve IP address every time when > node doing heartbeat. When DNS server becomes slow, NM heartbeat will be > blocked and cannot make progress. -- This message was sent by Atlassian JIRA (v6.3.4#6332)