András Győri created YARN-11278:
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Summary: 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
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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