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https://issues.apache.org/jira/browse/HADOOP-16543?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16927182#comment-16927182
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lqjacklee commented on HADOOP-16543:
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[~roliu][HDDS-1933|https://issues.apache.org/jira/browse/HDDS-1933] should see
the same issue ?
> 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
> Priority: Major
>
> 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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