A Spark engineer is troubleshooting a Spark application that has been encountering out-of-memory errors during...

Comprehensive and Detailed Explanation From Exact Extract:

The message"GC overhead limit exceeded"typically indicates that the JVM is spending too much time in garbage collection with little memory recovery. This suggests that the driver or executor is under-provisioned in memory.

The most effective remedy is to increase the driver memory using:

--driver-memory 4g

This is confirmed in Spark's official troubleshooting documentation:

“If you see a lot ofGC overhead limit exceedederrors in the driver logs, it’s a sign that the driver is running out of memory.”

—Spark Tuning Guide

Why others are incorrect:

Amay help but does not directly address the driver memory shortage.

Bis not a valid action; GC cannot be disabled.

Dincreases memory usage, worsening the problem.