[jira] [Assigned] (FLINK-27535) Optimize the unit test execution time

["Dong Lin (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-27535?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dong Lin reassigned FLINK-27535:
--------------------------------

    Assignee: Yunfeng Zhou

> Optimize the unit test execution time
> -------------------------------------
>
>                 Key: FLINK-27535
>                 URL: https://issues.apache.org/jira/browse/FLINK-27535
>             Project: Flink
>          Issue Type: Improvement
>          Components: Library / Machine Learning
>    Affects Versions: ml-2.1.0
>            Reporter: Dong Lin
>            Assignee: Yunfeng Zhou
>            Priority: Major
>
> Currently `mvn package` takes 10 minutes to complete in Github actions. A lot of time is spent in running unit tests for algorithms. For example, LogisticRegressionTest takes 82 seconds and KMeansTest takes 43 seconds in [1]. 
> This time appears to be more than expected. And it will considerably reduce developer velocity if a developer needs to wait for hours to get test results once we have 100+ algorithms in Flink ML.
> We should understand why it takes 82 seconds to run e.g. LogisticRegressionTest and see if there is a way to optimize the test execution time.
> [1] https://github.com/apache/flink-ml/runs/6319402103?check_suite_focus=true.



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