[I] [Bug] [Datasource-Hive] ConcurrentModificationException in UserGroupInformationFactory [dolphinscheduler]

["eye-gu (via GitHub)" <gi...@apache.org>]

eye-gu opened a new issue, #18330:
URL: https://github.com/apache/dolphinscheduler/issues/18330

   ### Search before asking
   
   - [x] I had searched in the [issues](https://github.com/apache/dolphinscheduler/issues?q=is%3Aissue) and found no similar issues.
   
   
   ### What happened
   
   https://github.com/apache/dolphinscheduler/blob/c9e373e30bda27f1d3fa6d0273264f03c2f2ccb6/dolphinscheduler-datasource-plugin/dolphinscheduler-datasource-hive/src/main/java/org/apache/dolphinscheduler/plugin/datasource/hive/security/UserGroupInformationFactory.java#L42-L90
   
   In UserGroupInformationFactory, login() and logout() are synchronized, but the static initializer schedules a background Kerberos renewal task that reads the same HashMap without synchronization. This will cause ConcurrentModificationException
   
   ### What you expected to happen
   
   Kerberos renewal thread should safely iterate the map
   
   ### How to reproduce
   
   Occasional
   
   ### Anything else
   
   _No response_
   
   ### Version
   
   dev
   
   ### Are you willing to submit PR?
   
   - [x] Yes I am willing to submit a PR!
   
   ### Code of Conduct
   
   - [x] I agree to follow this project's [Code of Conduct](https://www.apache.org/foundation/policies/conduct)
   


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Re: [I] [Bug] [Datasource-Hive] ConcurrentModificationException in UserGroupInformationFactory [dolphinscheduler]

["ruanwenjun (via GitHub)" <gi...@apache.org>]

ruanwenjun closed issue #18330: [Bug] [Datasource-Hive] ConcurrentModificationException in UserGroupInformationFactory
URL: https://github.com/apache/dolphinscheduler/issues/18330


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