adoroszlai opened a new pull request, #6036:
URL: https://github.com/apache/ozone/pull/6036

   ## What changes were proposed in this pull request?
   
   Repeated tests in `junit.sh` should fail fast if no tests are executed in 
the first iteration.  The goal is to indicate if the wrong test filter was used 
(e.g. abstract test class).
   
   https://issues.apache.org/jira/browse/HDDS-10080
   
   ## How was this patch tested?
   
   ### Local tests
   
   Non-existent class:
   
   ```
   $ ITERATIONS=3 OZONE_REPO_CACHED=true \
     ./hadoop-ozone/dev-support/checks/junit.sh \
     -am -pl :hdds-config -Dtest='NoSuchTest'
   ...
   [INFO] BUILD SUCCESS
   ...
   Iteration 1 exit code: 1
   
   $ cat target/unit/iteration1/summary.txt 
   No tests were run
   ```
   
   Non-existent method in existing class:
   
   ```
   $ ITERATIONS=3 OZONE_REPO_CACHED=true \
     ./hadoop-ozone/dev-support/checks/junit.sh \
     -am -pl :hdds-config -Dtest='TestConfigFileAppender#noSuchTest'
   ...
   [INFO] Tests run: 0, Failures: 0, Errors: 0, Skipped: 0
   ...
   [INFO] BUILD SUCCESS
   ...
   Iteration 1 exit code: 1
   
   $ cat target/unit/iteration1/summary.txt 
   No tests were run
   ```
   
   Valid test class:
   
   ```
   $ ITERATIONS=3 OZONE_REPO_CACHED=true \
     ./hadoop-ozone/dev-support/checks/junit.sh \
     -am -pl :hdds-config -Dtest='TestConfigFileAppender'
   ...
   
   $ cat target/unit/summary.txt                                                
                                                                   
   Iteration 1 exit code: 0
   Iteration 2 exit code: 0
   Iteration 3 exit code: 0
   ```
   
   ### flaky-test-check
   
   Used flaky-test-check from HDDS-10079.
   
   Non-existent test method:
   https://github.com/adoroszlai/ozone/actions/runs/7584500146/job/20658460541
   
   Abstract test class:
   https://github.com/adoroszlai/ozone/actions/runs/7584281925/job/20657631720
   
   Specific method in abstract test class:
   https://github.com/adoroszlai/ozone/actions/runs/7584288405/job/20657650841
   
   Valid test class and method:
   https://github.com/adoroszlai/ozone/actions/runs/7584274733/job/20657610659
   
   ### Regular CI
   
   https://github.com/adoroszlai/ozone/actions/runs/7584240425


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