[YARN-10664] Allow parameter expansion in NM_ADMIN_USER_ENV

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.10.1, 3.4.0
• Fix Version/s: 3.4.0, 3.3.1, 3.2.3
• Component/s: yarn
• Assignee: Jim Brennan
• Reporter: Jim Brennan
• Created: 02/Mar/21 15:31
• Updated: 04/Dec/22 10:32
• Resolved: 08/Mar/21 20:23

Description

Currently, YarnConfiguration.NM_ADMIN_USER_ENV does not do parameter expansion.  That is, you cannot specify an environment variable such as

{{JAVA_HOME}}

and have it be expanded to $JAVA_HOME inside the container.

We have a need for this in specifying different java gc options for java processing running inside yarn containers based on which version of java is being used.

Issue Links

• causes: YARN-11386 Fix issue with classpath resolution