[GitHub] [arrow-ballista] thinkharderdev opened a new issue, #663: Make task reset policy configurable

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

thinkharderdev opened a new issue, #663:
URL: https://github.com/apache/arrow-ballista/issues/663

   **Is your feature request related to a problem or challenge? Please describe what you are trying to do.**
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   Currently when an executor is lost we try and rollback the job and retry tasks (and possibly stages) to continue. In some cases this is not the desired behavior and it would be better to just let the job fail. For instance, in an interactive query system where a late result is just as bad as a failure, it would be better to fail fast than consume more cluster resources to re-compute results. 
   
   **Describe the solution you'd like**
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   Scheduler should have a configurable policy:
   
   ```
   enum TaskResetPolicy {
      Fail,
      Retry
   }
   ```
   
   If set to `Fail` then when an executor is lost we fail any jobs with tasks running on that executor (and try and cancel any running tasks for those jobs on other executors) instead of trying to reset stages. 
   
   We can combine this with the ideas outlined in https://github.com/apache/arrow-ballista/issues/655 to try and allow executors to finish tasks after receiving `SIGTERM` before cancelling everything to minimize disruption. For interactive query systems where individual tasks are generally short-lived, this might be a more appropriate behavior.
   
   Initially this should be a scheduler global config, but in principle it could be set on a per-query basis in the future. 
   
   
   **Describe alternatives you've considered**
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   Do nothing
   
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