[GitHub] [arrow-ballista] liukun4515 opened a new issue, #90: Scheduler will lost the registered executor when restart it in the `push` mode

[GitBox]

liukun4515 opened a new issue, #90:
URL: https://github.com/apache/arrow-ballista/issues/90

   **Describe the bug**
   When i restart the schedule, the schedule lost all the information of 
registered executor
   
   **To Reproduce**
   Start a scheduler with below config:
   ```
   scheduler_policy="PushStaged"
   ```
   Start a executor with below config:
   ```
   scheduler_port=50050
   scheduler_host="localhost"
   # PushStaged or PullStaged
   task_scheduling_policy="PushStaged"
   ```
   
   then kill the scheduler and restart the scheduler using the same config.
   
   And the scheduler will lost all registered executor in the memory.
   
   
   
   **Expected behavior**
   We should recover this data in memory after the scheduler restart.
   
   Solution:
   heartbeat with the registered information for the executor
   
   **Additional context**
   Add any other context about the problem here.
   


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