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https://issues.apache.org/jira/browse/YARN-9118?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16763897#comment-16763897
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Szilard Nemeth commented on YARN-9118:
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Hi [~sunilg] & [~bsteinbach]!
Please see the latest patch, I introduced a new kind of exception with static
helper methods to create them easily from GpuDiscoverer. Also I removed all the
assertions on exception error messages as it can result in too fragile tests
anyways.
> 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, YARN-9118.007.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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