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From "Szilard Nemeth (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-9118) Handle issues with parsing user defined GPU devives in GpuDiscoverer
Date Thu, 13 Dec 2018 15:03:00 GMT
Szilard Nemeth created YARN-9118:
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             Summary: Handle issues with parsing user defined GPU devives 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


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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