tisonkun commented on code in PR #17575:
URL: https://github.com/apache/pulsar/pull/17575#discussion_r967554873


##########
pulsar-broker-common/src/main/java/org/apache/pulsar/broker/ServiceConfiguration.java:
##########
@@ -2337,7 +2336,7 @@ public class ServiceConfiguration implements 
PulsarConfiguration {
         category = CATEGORY_LOAD_BALANCER,
         doc = "Supported algorithms name for namespace bundle split"
     )
-    private List<String> supportedNamespaceBundleSplitAlgorithms = 
Lists.newArrayList("range_equally_divide",
+    private Set<String> supportedNamespaceBundleSplitAlgorithms = 
Sets.newHashSet("range_equally_divide",

Review Comment:
   > create an unmodifiable set
   
   That's it! I think JDK provides only the unmodifiable set version and `new 
HashSet<>()` which doesn't accept an element parameter. Thanks for your 
investigation!



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