thinQmaster Virtual testing partner Adaptive practice exams that find your weak spots and drill them. Every answer explained. From $69
Enroll

thinQmaster

Find your exam

Five questions free, before you decide.

Step 1 · choose a vendor

In one of our camps? Your practice exams come with the tuition — they are on your study page already.

Data & Analytics · Intermediate

Spark Driver

The Spark process that runs the main program, builds the DAG, schedules tasks and collects results.

Definition

The driver coordinates executors through the cluster manager. Collecting large results or broadcasting huge tables can exhaust driver memory.

Exam tip

Driver OOM usually means too much data was collected or broadcast to the driver.

Related terms