xyuanlu opened a new issue #1543:
URL: https://github.com/apache/helix/issues/1543
### Describe the bug
We found there are cases after controller leadership switch, periodic
rebalancer won't work as expected.
This is caused by the definition here:
````
private static final ScheduledExecutorService _periodicalRebalanceExecutor =
Executors.newSingleThreadScheduledExecutor();
```
It should not be 'static'
### To Reproduce
Steps to reproduce the behavior.
### Expected behavior
A clear and concise description of what you expected to happen.
### Additional context
Add any other context about the problem here.
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