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From "Szilard Nemeth (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-9118) Handle issues with parsing user defined GPU devices in GpuDiscoverer
Date Thu, 31 Jan 2019 13:42:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-9118?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16757240#comment-16757240
] 

Szilard Nemeth commented on YARN-9118:
--------------------------------------

UT failure seems unrelated.

> 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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