ahuang98 commented on code in PR #21053:
URL: https://github.com/apache/kafka/pull/21053#discussion_r2677564871
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metadata/src/main/java/org/apache/kafka/image/ConfigurationDelta.java:
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@@ -56,19 +70,28 @@ public void deleteAll() {
}
public ConfigurationImage apply() {
+ Set<String> whitelist = VALID_CONFIGS_REF.get();
Review Comment:
there might be a better place to do this validation (you might want to take
a look at FeaturesDelta and see how we handle filtering there for an old bug)
another good point from @jsancio is that all XXXDelta's apply methods are
doing are applying deltas ontop of a base image to produce a new image. that
new image then becomes the base image for the next delta to be applied ontop
of. given that we always start with an empty base image, it follows that we
only need to validate the delta (referenced to as `changes` in this code)
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