[YARN-8456] Fix a configuration handling bug when user leave FPGA discover executable path configuration default but set OpenCL SDK path environment variable

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.2.1
• Component/s: yarn
• Hadoop Flags: Reviewed
• Assignee: Zhankun Tang
• Reporter: Zhankun Tang
• Created: 23/Jun/18 05:49
• Updated: 18/Oct/18 19:28
• Resolved: 18/Oct/18 19:28

Description

Issue:
When the user doesn't configure "yarn.nodemanager.resource-plugins.fpga.path-to-discovery-executables" in yarn-site.xml and have "ALTERAOCLSDKROOT" environment variable set, the FPGA discoverer cannot find the correct executable path (with IntelFPGAOpenclPlugin).

Reason:

In IntelFPGAOpenclPlugin,  the current code builds a wrong path string after getting the environment variable value. It should append "/bin/<executable name>" otherwise it would fail the FPGA resource discovery.

 

Solution:

Fix the path construction code in IntelFPGAOpenclPlugin.