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Currently, there exists a kafka.server:type=MetadataLoader,name=CurrentMetadataVersion metric which tells the operator the metadata version feature level for every node in a cluster. However, now that there several features with support beyond the metadata.version feature. Adding , adding a metric to display those features' levels would be helpful for monitoring upgrade/downgrade scenarios for clusters using those features.
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This can be accomplished via one generic "feature level" metric that is tagged by feature. Using a generic metric allows for new production features to automatically expose their feature level going forward.
| Name | Type | Description |
|---|---|---|
| kafka.server:type=MetadataLoader,name=FeatureLevel,featureName=X | Integer | The value of the feature level for a feature named "X". |
The default value of this metric should be the default value of the feature.
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