TaskSchedulerImpl#initialize - why is rootPool initialized here not while TaskSchedulerImpl is created?

[Jacek Laskowski <ja...@japila.pl>]

Hi,

While reviewing TaskSchedulerImpl I've noticed that rootPool is
created and initialized in TaskSchedulerImpl#initialize [1], but seems
legit to do it as part of TaskSchedulerImpl's instantiation.

What is the reason for creating and initializing rootPool late in
TaskSchedulerImpl's lifecycle?

[1] https://github.com/apache/spark/blob/master/core/src/main/scala/org/apache/spark/scheduler/TaskSchedulerImpl.scala#L131-L142

Pozdrawiam,
Jacek Laskowski
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