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

[Shang Yuanchun (Jira)]

Yangze Guo created FLINK-17917:
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             Summary: 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
             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.

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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