[jira] [Created] (KAFKA-13625) KIP-817: Fix inconsistency in dynamic application log levels

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

Dongjin Lee created KAFKA-13625:
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             Summary: KIP-817: Fix inconsistency in dynamic application log levels
                 Key: KAFKA-13625
                 URL: https://issues.apache.org/jira/browse/KAFKA-13625
             Project: Kafka
          Issue Type: Improvement
          Components: core
            Reporter: Dongjin Lee
            Assignee: Dongjin Lee


As of present, there are two ways of changing log levels in Runtime:
 # JMX API
 # Admin API

However, there are some inconsistencies between these two ways;
 # JMX API allows OFF level; but Admin API does not. If the user tries to set the logger's level to OFF, Kafka responds with INVALID_CONFIG (40) error.
 # JMX API converts unsupported log level to DEBUG; but Admin API throws an error. The documentation does not state this difference in semantics.

To fix these inconsistencies, we have to:
 # Add OFF level to LogLevelConfig.
 # Add documentation on different semantics between JMX and Admin API.



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