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https://issues.apache.org/jira/browse/YARN-9118?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16762669#comment-16762669
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Antal Bálint Steinbach edited comment on YARN-9118 at 2/7/19 1:31 PM:
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Hi [~snemeth]!

Looks good to me!

I have one suggestion:

In TestGpuDiscoverer. I would not validate the exception through the error 
messages. Instead create a new type of exception which contains:
 * The invalid part
 * optionally an error code

Do validation on those, not on the actual error message.

 


was (Author: bsteinbach):
Hi Szilard!

Looks good to me!

I have one suggestion:

In TestGpuDiscoverer. I would not validate the exception through the error 
messages. Instead create a new type of exception which contains:
 * The invalid part
 * optionally an error code

Do validation on those, not on the actual error message.

 

> Handle issues with parsing user defined GPU devices in GpuDiscoverer
> --------------------------------------------------------------------
>
>                 Key: YARN-9118
>                 URL: https://issues.apache.org/jira/browse/YARN-9118
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Szilard Nemeth
>            Assignee: Szilard Nemeth
>            Priority: Major
>         Attachments: YARN-9118.001.patch, YARN-9118.002.patch, 
> YARN-9118.003.patch, YARN-9118.004.patch, YARN-9118.005.patch, 
> YARN-9118.006.patch
>
>
> getGpusUsableByYarn has the following issues: 
> - Duplicate GPU device definitions are not denied: This seems to be the 
> biggest issue as it could increase the number of devices on the node if the 
> device ID is defined 2 or more times.
> - An empty-string is accepted, it works like the user would not want to use 
> auto-discovery and haven't defined any GPU devices: This will result in an 
> empty device list, but the empty-string check is never explicitly there in 
> the code, so this behavior just coincidental.
> - Number validation does not happen on GPU device IDs (separated by commas)
> Many testcases are added as the coverage was already very low.



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