[jira] [Assigned] (FLINK-17917) ResourceInformationReflector#getExternalResources should ignore the external resource with a value of 0

["Till Rohrmann (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-17917?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Till Rohrmann reassigned FLINK-17917:
-------------------------------------

    Assignee: Yangze Guo

> ResourceInformationReflector#getExternalResources should ignore the external resource with a value of 0
> -------------------------------------------------------------------------------------------------------
>
>                 Key: FLINK-17917
>                 URL: https://issues.apache.org/jira/browse/FLINK-17917
>             Project: Flink
>          Issue Type: Bug
>          Components: Runtime / Coordination
>    Affects Versions: 1.11.0
>            Reporter: Yangze Guo
>            Assignee: Yangze Guo
>            Priority: Blocker
>              Labels: pull-request-available
>             Fix For: 1.11.0
>
>
> *Background*: In FLINK-17390, we leverage {{WorkerSpecContainerResourceAdapter.InternalContainerResource}} to handle container matching logic. In FLINK-17407, we introduce external resources in {{WorkerSpecContainerResourceAdapter.InternalContainerResource}}.
>  On containers returned by Yarn, we try to get the corresponding worker specs by:
>  - Convert the container to {{InternalContainerResource}}
>  - Get the WorkerResourceSpec from {{containerResourceToWorkerSpecs}} map.
> *Problem*: Container mismatch could happen in the below scenario:
>  - Flink does not allocate any external resources, the {{externalResources}} of {{InternalContainerResource}} is an empty map.
>  - The returned container contains all the resources (with a value of 0) defined in Yarn's {{resource-types.xml}}. The {{externalResources}} of {{InternalContainerResource}} has one or more entries with a value of 0.
>  - These two {{InternalContainerResource}} do not match.
> To solve this problem, we could ignore all the external resources with a value of 0 in "ResourceInformationReflector#getExternalResources".
> cc [~trohrmann] Could you assign this to me?



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