Github user sitalkedia commented on the issue:
https://github.com/apache/spark/pull/19048
That's not really true.
The EAM uses the `requestTotalExecutors` api to set the target for the
scheduler.
- 10 executors are running, each executor can run 4 tasks at max.
- 20 tasks are running so EAM sets the internal target to 5 and also asks
the CGSB to set its target to 5.
- However, only 2 executors are idle, so the EAM will try to kill 2 of them.
- CGSB now sets its target to 3 because the EAM asks to kill 2 executors.
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