Github user squito commented on the issue:
https://github.com/apache/spark/pull/17113
I think killing tasks is only applicable in different scenarios, eg. if the
[*job*
fails](https://github.com/apache/spark/blob/12bf832407eaaed90d7c599522457cb36b303b6c/core/src/main/scala/org/apache/spark/scheduler/DAGScheduler.scala#L1513).
Currently, spark does not cancel running tasks when the stage fails due to a
fetch failure. The taskset is marked as a zombie, but running tasks are left
alone.
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