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Posted to jira@kafka.apache.org by "Yuriy Badalyantc (Jira)" <ji...@apache.org> on 2026/08/05 04:44:00 UTC

[jira] [Created] (KAFKA-20892) SimpleHeaderConverter infers a string header as a number if it starts with a digit

Yuriy Badalyantc created KAFKA-20892:
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             Summary: SimpleHeaderConverter infers a string header as a number if it starts with a digit
                 Key: KAFKA-20892
                 URL: https://issues.apache.org/jira/browse/KAFKA-20892
             Project: Kafka
          Issue Type: Bug
          Components: connect
    Affects Versions: 4.3.1
            Reporter: Yuriy Badalyantc
            Assignee: Yuriy Badalyantc


When `SimpleHeaderConverter` tries to decode a header with value like this: `1::2`, it mistakenly infers the type of the value as number and returns `1` as a result of decoding.

The reason is in the `Values.parseString` implementation. There was a [ticket|https://issues.apache.org/jira/browse/KAFKA-9083] to fix a number of similar parsing problems, but this particular problem was not included.



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