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Q23 Single choice

Which of the following statements about Spark's execution hierarchy is correct?

A
In Spark's execution hierarchy, a job may reach over multiple stage boundaries.
B
In Spark's execution hierarchy, manifests are one layer above jobs.
C
In Spark's execution hierarchy, a stage comprises multiple jobs.
D
In Spark's execution hierarchy, executors are the smallest unit.
E
In Spark's execution hierarchy, tasks are one layer above slots.

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