David Arthur created KAFKA-14712:
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Summary: Confusing error when writing downgraded FeatureImage
Key: KAFKA-14712
URL: https://issues.apache.org/jira/browse/KAFKA-14712
Project: Kafka
Issue Type: Bug
Reporter: David Arthur
We have logic in ImageWriterOptions which forces any MetadataVersion lower than
3.3-IV0 to be treated as 3.0-IV1. This was because FeatureLevel records were
not supported before 3.3-IV0.
When FeatureLevel is written at an older version, the "loss handler" produces
an error message warning the user that some metadata is being lost.
For example, when writing a FeatureImage with flag "foo" at MetadataVersion
3.2-IV0, we get a message like:
> Metadata has been lost because the following could not be represented in
> metadata version 3.0-IV1: feature flag(s): foo
This is confusing since we told the image builder to use MetadataVersion
3.2-IV0, but 3.0-IV1 appears in the text.
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