cmccabe commented on code in PR #13407:
URL: https://github.com/apache/kafka/pull/13407#discussion_r1173068660
##########
metadata/src/main/java/org/apache/kafka/controller/FeatureControlManager.java:
##########
@@ -232,13 +248,20 @@ private ApiError updateMetadataVersion(
Consumer<ApiMessageAndVersion> recordConsumer
) {
MetadataVersion currentVersion = metadataVersion();
+ ZkMigrationState zkMigrationState = zkMigrationState();
final MetadataVersion newVersion;
try {
newVersion = MetadataVersion.fromFeatureLevel(newVersionLevel);
} catch (IllegalArgumentException e) {
return invalidMetadataVersion(newVersionLevel, "Unknown
metadata.version.");
}
+ // Don't allow metadata.version changes while we're migrating
+ if (EnumSet.of(ZkMigrationState.PRE_MIGRATION,
ZkMigrationState.MIGRATION).contains(zkMigrationState)) {
Review Comment:
Hmm, seems like this might come up in a bunch of places. Maybe we can have
something like `boolean ZkMigrationState#inProgress() { return this ==
PRE_MIGRATION || this == POST_MIGRATION; }`?
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