[FLINK-33520] FileNotFoundException when running GPUDriverTest

• Type: Technical Debt
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.18.0
• Fix Version/s: 1.19.0
• Component/s: Tests
• Labels: pull-request-available
• Assignee: Ryan Skraba
• Reporter: Ryan Skraba
• Created: 10/Nov/23 14:18
• Updated: 13/Nov/23 15:01
• Resolved: 13/Nov/23 15:00

Description

I'd been running into a mysterious error running the flink-external-resources module tests:

java.io.FileNotFoundException: The gpu discovery script does not exist in path /opt/asf/flink/src/test/resources/testing-gpu-discovery.sh.
	at org.apache.flink.externalresource.gpu.GPUDriver.<init>(GPUDriver.java:98)
	at org.apache.flink.externalresource.gpu.GPUDriverTest.testGPUDriverWithInvalidAmount(GPUDriverTest.java:64)
	at

From the command line and IntelliJ, when it seems to works, it always works, and when it fails it always fails. I finally took a moment to figure it out: if the FLINK_HOME environment variable is set (to a valid Flink distribution of any version), this test fails.

This is a very minor irritation, but it's pretty easy to fix.

The workaround is to launch the unit test in an environment where this environment variable is not set.

Issue Links

• links to: GitHub Pull Request #23696