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https://issues.apache.org/jira/browse/KAFKA-18061?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17900046#comment-17900046
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Anton Agestam commented on KAFKA-18061:
---------------------------------------
[~linsiyuan] Please go ahead, I have not even glanced at the source code to
figure out where this comes from. I also haven't checked the other related
messages: RemoveRaftVoter and UpdateRaftVoter yet, it seems likely they are
also affected.
> AddRaftVoter responds with error message "NONE" instead of null
> ---------------------------------------------------------------
>
> Key: KAFKA-18061
> URL: https://issues.apache.org/jira/browse/KAFKA-18061
> Project: Kafka
> Issue Type: Bug
> Affects Versions: 3.9.0
> Reporter: Anton Agestam
> Priority: Minor
>
> In a successful response from the AddRaftVoter API there are values:
> * error_code=0
> * error_message="NONE"
> The documentation of the error_message field, just like for other APIs says
> "The error message, or null if there was no error.", so the string "NONE"
> here looks like a bug.
>
> The raw bytes received are:
>
> \x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x05NONE\x00
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