[jira] [Created] (HADOOP-16938) Add plugs for non-HA proxy providers

2020-03-24 Thread Roger Liu (Jira)
Roger Liu created HADOOP-16938:
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 Summary: Add plugs for non-HA proxy providers
 Key: HADOOP-16938
 URL: https://issues.apache.org/jira/browse/HADOOP-16938
 Project: Hadoop Common
  Issue Type: Improvement
Reporter: Roger Liu


We need to make non-ha proxy providers plugable to handle custom refresh code 
to address bugs like this: https://issues.apache.org/jira/browse/HADOOP-16543



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[jira] [Commented] (HADOOP-16543) Cached DNS name resolution error

2019-09-10 Thread Roger Liu (Jira)


[ 
https://issues.apache.org/jira/browse/HADOOP-16543?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16927082#comment-16927082
 ] 

Roger Liu commented on HADOOP-16543:


Sure thing

> 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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[jira] [Commented] (HADOOP-16543) Cached DNS name resolution error

2019-09-04 Thread Roger Liu (Jira)


[ 
https://issues.apache.org/jira/browse/HADOOP-16543?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16922745#comment-16922745
 ] 

Roger Liu commented on HADOOP-16543:


We actually have a PR that can address this issue: 
[https://github.com/apache/hadoop/pull/1399]

Doing this at the Hadoop level can fix the problem

> 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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[jira] [Created] (HADOOP-16543) Cached DNS name resolution error

2019-09-03 Thread Roger Liu (Jira)
Roger Liu created HADOOP-16543:
--

 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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