[jira] [Created] (FLINK-15564) YarnClusterDescriptorTest failed to validate the original intended behavior

["Xintong Song (Jira)" <ji...@apache.org>]

Xintong Song created FLINK-15564:
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             Summary: YarnClusterDescriptorTest failed to validate the original intended behavior
                 Key: FLINK-15564
                 URL: https://issues.apache.org/jira/browse/FLINK-15564
             Project: Flink
          Issue Type: Bug
          Components: Deployment / YARN
            Reporter: Xintong Song


As discovered in [PR#10834|https://github.com/apache/flink/pull/10834], the following test cases of {{YarnClusterDescriptorTest}} have failed to validate the original intended behavior and are temporally skipped by PR#10834.
- {{testFailIfTaskSlotsHigherThanMaxVcores}}
- {{testConfigOverwrite}}

The original purpose of these two test cases was to verify the validation logic against yarn max allocation vcores (in {{5836f7eddb4849b95d4860cf20045bc61d061918}}). 

These two cases should have failed when we change the validation logic to get yarn max allocation vcores from yarnClient instead of configuration (in {{e959e6d0cd42f0c5b21c0f03ce547f2025ac58d5}}), because there are no yarn cluster (neither {{MiniYARNCluster}}) started in these cases, thus {{yarnClient#getNodeReports}} will never return.

The cases have not failed because another {{IllegalConfigurationException}} was thrown in {{validateClusterSpecification}}, because of memory validation failure. The memory validation failure was by design, and in order to verify the original purpose these two test cases should have been updated with reasonable memory sizes, which is unfortunately overlooked. 



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