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https://issues.apache.org/jira/browse/HDFS-15032?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Erik Krogen updated HDFS-15032:
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    Comment: was deleted

(was: | (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue}  0m  
0s{color} | {color:blue} Docker mode activated. {color} |
| {color:red}-1{color} | {color:red} patch {color} | {color:red}  0m  8s{color} 
| {color:red} HDFS-15032 does not apply to trunk. Rebase required? Wrong 
Branch? See https://wiki.apache.org/hadoop/HowToContribute for help. {color} |
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|| Subsystem || Report/Notes ||
| JIRA Issue | HDFS-15032 |
| Console output | 
https://builds.apache.org/job/PreCommit-HDFS-Build/28486/console |
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This message was automatically generated.

)

> Balancer crashes when it fails to contact an unavailable NN via 
> ObserverReadProxyProvider
> -----------------------------------------------------------------------------------------
>
>                 Key: HDFS-15032
>                 URL: https://issues.apache.org/jira/browse/HDFS-15032
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: balancer & mover
>    Affects Versions: 2.10.0
>            Reporter: Erik Krogen
>            Assignee: Erik Krogen
>            Priority: Major
>         Attachments: HDFS-15032.000.patch, HDFS-15032.001.patch, 
> HDFS-15032.002.patch, HDFS-15032.003.patch, HDFS-15032.004.patch, 
> debugger_with_tostring.png, debugger_without_tostring.png
>
>
> When trying to run the Balancer using ObserverReadProxyProvider (to allow it 
> to read from the Observer Node as described in HDFS-14979), if one of the NNs 
> isn't running, the Balancer will crash.



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