zjffdu commented on issue #8144: [FLINK-12159]. Enable YarnMiniCluster integration test under non-secure mode URL: https://github.com/apache/flink/pull/8144#issuecomment-483088606 @tillrohrmann I checked the `flink-yarn-tests` module, we have yarn test in non-secure mode. But the tricky thing is that we set `yarn.minicluster.fixed.ports` to `true` (https://github.com/apache/flink/blob/master/flink-yarn-tests/src/test/java/org/apache/flink/yarn/YarnTestBase.java#L169), so that JM can connect to Yarn RM without `yarn-site.xml`, because yarn RM will always use `8030` as the scheduler service port. But I don't think this is the correct way to do integration test. 1. Using fixed port is easy to cause port conflicts in their local environment and it is hard for user to figure out why their test fail. 2. It is impossible to start 2 MiniYarnCluster. 3. It is hard for downstream project to follow this. We can not enforce the downstream project set `yarn.minicluster.fixed.ports` to `true` (The default value is `false`, so most of time user don't know he needs to set it to `true`) I will update the test code as well.
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