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

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

     [ https://issues.apache.org/jira/browse/YARN-9269?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Peter Bacsko updated YARN-9269:
-------------------------------
    Attachment: YARN-9269-004.patch

> 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
>            Assignee: Peter Bacsko
>            Priority: Major
>         Attachments: YARN-9269-001.patch, YARN-9269-002.patch, YARN-9269-003.patch, YARN-9269-004.patch
>
>
> 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
>  * {{@VisibleForTesting}} methods should be package private
>  * get rid of {{*}} imports



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