Roger Liu created HADOOP-16543:
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Summary: Cached DNS name resolution error
Key: HADOOP-16543
URL: https://issues.apache.org/jira/browse/HADOOP-16543
Project: Hadoop Common
Issue Type: Bug
Affects Versions: 3.1.2
Reporter: Roger Liu
In Kubernetes, the a node may go down and then come back later with a different
IP address. Yarn clients which are already running will be unable to rediscover
the node after it comes back up due to caching the original IP address. This is
problematic for cases such as Spark HA on Kubernetes, as the node containing
the resource manager may go down and come back up, meaning existing node
managers must then also be restarted.
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