[HADOOP-18021] Provide a public wrapper of Configuration#substituteVars

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.4.0
• Fix Version/s: 3.4.0
• Component/s: conf
• Labels: pull-request-available
• Assignee: Andras Gyori
• Reporter: Andras Gyori
• Created: 23/Nov/21 07:20
• Updated: 02/Mar/22 11:11
• Resolved: 03/Dec/21 16:50

Description

YARN-10838 and YARN-10911 introduced an unfortunate change in Configuration that could potentially be backward incompatible (visibility of substituteVars). Since it is easily circumvented, my proposal is to avoid breaking changes if possible.

One found issue is that Oozie defines substituteVars as a private method.
https://github.com/apache/oozie/blob/master/core/src/main/java/org/apache/oozie/util/XConfiguration.java#L186

Issue Links

• is broken by: YARN-10852 Optimise CSConfiguration getAllUserWeightsForQueue
• is broken by: YARN-10911 AbstractCSQueue: Create a separate class for usernames and weights that are travelling in a Map
• is required by: OOZIE-3642 Investigate if Oozie can utilize Hadoop's Configuration change
• links to: GitHub Pull Request #3710