[I] add unit test coverage for CoordinatorTimerService [texera]

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

eugenegujing opened a new issue, #7311:
URL: https://github.com/apache/texera/issues/7311

   ### Task Summary
   
   `amber/src/main/scala/org/apache/texera/amber/engine/architecture/coordinator/CoordinatorTimerService.scala` owns the two recurring timers that drive statistics collection: one for frontend status updates and one for runtime-statistics persistence. 
   
   The class has no spec, and the coordinator specs that construct a `CoordinatorProcessor` all pass `CoordinatorConfig(None, None, None, None)`, which means only the interval-empty path is ever taken and no timer is ever scheduled in a unit test. The end-to-end tests happen to use `CoordinatorConfig.default`, so the timers do run there, but nothing asserts the scheduling decision, the message payload, the idempotence guard, the cancel-and-clear behavior, or the independence of the two handles.
   
   ### Task Type
   
   - [ ] Refactor / Cleanup
   - [ ] DevOps / Deployment / CI
   - [x] Testing / QA
   - [ ] Documentation
   - [ ] Performance
   - [ ] Other


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Re: [I] add unit test coverage for CoordinatorTimerService [texera]

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

aglinxinyuan closed issue #7311: add unit test coverage for CoordinatorTimerService
URL: https://github.com/apache/texera/issues/7311


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