AndrewJSchofield commented on code in PR #17046:
URL: https://github.com/apache/kafka/pull/17046#discussion_r1752678715


##########
core/src/test/java/kafka/admin/ConfigCommandIntegrationTest.java:
##########
@@ -589,6 +658,16 @@ private void verifyGroupConfig(Admin client, String 
groupName, Map<String, Strin
         }, 10000, config + " are not updated");
     }
 
+    private void verifyClientMetricsConfig(Admin client, String 
clientMetricsName, Map<String, String> config) throws Exception {
+        ConfigResource configResource = new 
ConfigResource(ConfigResource.Type.CLIENT_METRICS, clientMetricsName);
+        TestUtils.waitForCondition(() -> {
+            Map<String, String> current = getConfigEntryStream(client, 
configResource)
+                    .filter(configEntry -> 
Objects.nonNull(configEntry.value()))
+                    .collect(Collectors.toMap(ConfigEntry::name, 
ConfigEntry::value));
+            return config.entrySet().stream().allMatch(e -> 
e.getValue().equals(current.get(e.getKey())));

Review Comment:
   I don't quite understand. It is true that `allMatch` is "vacuously" true 
when stream is empty, but in some cases the `config` parameter is not empty.



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