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https://issues.apache.org/jira/browse/HDFS-15032?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16992719#comment-16992719
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Erik Krogen edited comment on HDFS-15032 at 12/10/19 4:35 PM:
--------------------------------------------------------------

Thanks for the info [~shv], good to know. I've removed the {{toString()}} stuff 
in v5.

After seeing the Jenkins failure, I experimented and found that the new test 
timed out half of the time (5 of 10 runs) when run on my machine, but it 
succeeded every time when I increased the timeout to 2 minutes. I think it just 
needs longer since there is more overhead involved with the failure handling.

To avoid spurious failures, I increased the timeout for the failure test to 3 
minutes, and for the non-failure observer test to 2 minutes.


was (Author: xkrogen):
Thanks for the info [~shv], good to know. I've removed the {{toString()}} stuff 
in v5.

After seeing the Jenkins failure, I experimented and found that the new test 
timing out half of the time (5 of 10 runs) when run on my machine, but it 
succeeded every time when I increased the timeout to 2 minutes. I think it just 
needs longer since there is more overhead involved with the failure handling.

To avoid spurious failures, I increased the timeout for the failure test to 3 
minutes, and for the non-failure observer test to 2 minutes.

> 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, 
> HDFS-15032.005.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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