[jira] [Assigned] (YARN-11278) Ambiguous error message in mutation API

["groot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/YARN-11278?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

groot reassigned YARN-11278:
----------------------------

    Assignee: groot

> Ambiguous error message in mutation API
> ---------------------------------------
>
>                 Key: YARN-11278
>                 URL: https://issues.apache.org/jira/browse/YARN-11278
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: capacity scheduler
>            Reporter: András Győri
>            Assignee: groot
>            Priority: Major
>
> In RMWebServices#updateSchedulerConfiguration, we are checking two prerequisites:
> {code:java}
> if (scheduler instanceof MutableConfScheduler && ((MutableConfScheduler)
>     scheduler).isConfigurationMutable()) { {code}
> However, the error message is misleading in the second case (namely if the configuration is not mutable eg. a FILE_CONFIGURATION_STORE)
> {code:java}
> } else {
>   return Response.status(Status.BAD_REQUEST)
>       .entity("Configuration change only supported by " +
>           "MutableConfScheduler.")
>       .build(); {code}
>  



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