[YARN-11278] Ambiguous error message in mutation API

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.4.0
• Fix Version/s: 3.4.0
• Component/s: capacity scheduler
• Labels: pull-request-available
• Target Version/s: 3.4.0
• Hadoop Flags: Reviewed
• Assignee: Ashutosh Gupta
• Reporter: András Győri
• Created: 24/Aug/22 10:28
• Updated: 28/Jan/24 05:04
• Resolved: 09/Sep/22 12:39

Description

In RMWebServices#updateSchedulerConfiguration, we are checking two prerequisites:

if (scheduler instanceof MutableConfScheduler && ((MutableConfScheduler)
    scheduler).isConfigurationMutable()) { 

However, the error message is misleading in the second case (namely if the configuration is not mutable eg. a FILE_CONFIGURATION_STORE)

} else {
  return Response.status(Status.BAD_REQUEST)
      .entity("Configuration change only supported by " +
          "MutableConfScheduler.")
      .build(); 

 

Issue Links

• links to: GitHub Pull Request #4841