fix version numbers

Author: mjsax

metadata/src/test/java/org/apache/kafka/controller/FeatureControlManagerTest.java

@@ -396,7 +396,7 @@ public void testCannotDowngradeBeforeMinimumKraftVersion() {
             build();
         manager.replay(new FeatureLevelRecord().setName(MetadataVersion.FEATURE_NAME).setFeatureLevel(MetadataVersion.MINIMUM_VERSION.featureLevel()));
         assertEquals(ControllerResult.of(List.of(), new ApiError(Errors.INVALID_UPDATE_VERSION,
-            "Invalid update version 6 for feature metadata.version. Local controller 0 only supports versions 7-30")),
+            "Invalid update version 6 for feature metadata.version. Local controller 0 only supports versions 7-29")),
                 manager.updateFeatures(
                         Map.of(MetadataVersion.FEATURE_NAME, MetadataVersionTestUtils.IBP_3_3_IV2_FEATURE_LEVEL),
                         Map.of(MetadataVersion.FEATURE_NAME, FeatureUpdate.UpgradeType.UNSAFE_DOWNGRADE),

server-common/src/main/java/org/apache/kafka/server/common/MetadataVersion.java

@@ -127,15 +127,15 @@ public enum MetadataVersion {
     // *** SHARE GROUPS BECOME PRODUCTION-READY IN THE FUTURE. ITS DEFINITION ALLOWS A SHARE   ***
     // *** GROUPS FEATURE TO BE DEFINED IN 4.1 BUT TURNED OFF BY DEFAULT, ABLE TO BE TURNED ON ***
     // *** DYNAMICALLY TO TRY OUT THE PREVIEW CAPABILITY.                                      ***
-    IBP_4_2_IV0(29, "4.2", "IV0", false),
+    IBP_4_2_IV0(28, "4.2", "IV0", false),
 
     // Enables "streams" groups by default for new clusters (KIP-1071).
     //
     // *** THIS IS A PLACEHOLDER UNSTABLE VERSION WHICH IS USED TO DEFINE THE POINT AT WHICH     ***
     // *** STREAMS GROUPS BECOME PRODUCTION-READY IN THE FUTURE. ITS DEFINITION ALLOWS A STREAMS ***
     // *** GROUPS FEATURE TO BE DEFINED IN 4.1 BUT TURNED OFF BY DEFAULT, ABLE TO BE TURNED ON   ***
     // *** DYNAMICALLY TO TRY OUT THE EARLY ACCESS CAPABILITY.                                   ***
-    IBP_4_2_IV1(30, "4.2", "IV1", false);
+    IBP_4_2_IV1(29, "4.2", "IV1", false);
 
     // NOTES when adding a new version:
     //   Update the default version in @ClusterTest annotation to point to the latest version

tools/src/test/java/org/apache/kafka/tools/FeatureCommandTest.java

@@ -122,7 +122,7 @@ public void testDowngradeMetadataVersionWithKRaft(ClusterInstance cluster) {
         );
         // Change expected message to reflect possible MetadataVersion range 1-N (N increases when adding a new version)
         assertEquals("Could not disable metadata.version. The update failed for all features since the following " +
-                "feature had an error: Invalid update version 0 for feature metadata.version. Local controller 3000 only supports versions 7-30", commandOutput);
+                "feature had an error: Invalid update version 0 for feature metadata.version. Local controller 3000 only supports versions 7-29", commandOutput);
 
         commandOutput = ToolsTestUtils.captureStandardOut(() ->
                 assertEquals(1, FeatureCommand.mainNoExit("--bootstrap-server", cluster.bootstrapServers(),