Aihua Xu created YARN-9297:
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Summary: Renaming RM could cause application to crash
Key: YARN-9297
URL: https://issues.apache.org/jira/browse/YARN-9297
Project: Hadoop YARN
Issue Type: Improvement
Components: security
Affects Versions: 2.6.0
Reporter: Aihua Xu
In this line, we are throwing UnknownHostException when any RM host can't
resolve to ip address.
https://github.com/apache/hadoop/blob/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/SecurityUtil.java#L448
There are some cases that one RM needs to rename or map to different ip
address, then it will crash the application although other RMs are running
fine.
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