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https://issues.apache.org/jira/browse/KAFKA-16830?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17856809#comment-17856809
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Kuan Po Tseng commented on KAFKA-16830:
---------------------------------------

Hi [~ksolves.kafka] , yes, I'm working on this one.

> Remove the scala version formatters support
> -------------------------------------------
>
>                 Key: KAFKA-16830
>                 URL: https://issues.apache.org/jira/browse/KAFKA-16830
>             Project: Kafka
>          Issue Type: Improvement
>            Reporter: Chia-Ping Tsai
>            Assignee: Ksolves
>            Priority: Minor
>             Fix For: 4.0.0
>
>
> https://github.com/apache/kafka/blob/trunk/tools/src/main/java/org/apache/kafka/tools/consumer/ConsoleConsumerOptions.java#L353
>  
> {code:java}
>     private static String convertDeprecatedClass(String className) {
>         switch (className) {
>             case "kafka.tools.DefaultMessageFormatter":
>                 System.err.println("WARNING: 
> kafka.tools.DefaultMessageFormatter is deprecated and will be removed in the 
> next major release. " +
>                         "Please use 
> org.apache.kafka.tools.consumer.DefaultMessageFormatter instead");
>                 return DefaultMessageFormatter.class.getName();
>             case "kafka.tools.LoggingMessageFormatter":
>                 System.err.println("WARNING: 
> kafka.tools.LoggingMessageFormatter is deprecated and will be removed in the 
> next major release. " +
>                         "Please use 
> org.apache.kafka.tools.consumer.LoggingMessageFormatter instead");
>                 return LoggingMessageFormatter.class.getName();
>             case "kafka.tools.NoOpMessageFormatter":
>                 System.err.println("WARNING: kafka.tools.NoOpMessageFormatter 
> is deprecated and will be removed in the next major release. " +
>                         "Please use 
> org.apache.kafka.tools.consumer.NoOpMessageFormatter instead");
>                 return NoOpMessageFormatter.class.getName();
>             default:
>                 return className;
>         }
>     }
> {code}
> Those deprecated formatters "strings" should be removed from 4.0.0



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