[jira] [Created] (YARN-9269) Minor cleanup in FpgaResourceAllocator

["Peter Bacsko (JIRA)" <ji...@apache.org>]

Peter Bacsko created YARN-9269:
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             Summary: Minor cleanup in FpgaResourceAllocator
                 Key: YARN-9269
                 URL: https://issues.apache.org/jira/browse/YARN-9269
             Project: Hadoop YARN
          Issue Type: Sub-task
            Reporter: Peter Bacsko


Some stuff that we observed:

* {{addFpga()}} - we check for duplicate devices, but we don't print any error/warning if there's any.
* {{findMatchedFpga()}} should be called findMatchingFpga(). Also, is this method even needed? We already receive an {{FpgaDevice}} instance in {{updateFpga()}} which I believe is the same that we're looking up.
* variable {{IPIDpreference}} is confusing
* {{availableFpga}} / {{usedFpgaByRequestor}} are instances of {{LinkedHashMap}}. What's the rationale behind this? Doesn't a simple {{HashMap}} suffice?
* {{usedFpgaByRequestor}} should be renamed, naming is a bit unclear
* {{allowedFpgas}} should be an immutable list



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