Íñigo Goiri reassigned HADOOP-16543:

    Assignee: Roger Liu

> 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
>            Assignee: 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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