cmccabe commented on code in PR #12636:
URL: https://github.com/apache/kafka/pull/12636#discussion_r971092861
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metadata/src/main/java/org/apache/kafka/metadata/authorizer/StandardAuthorizerData.java:
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@@ -109,14 +110,9 @@ public class StandardAuthorizerData {
private final DefaultRule defaultRule;
/**
- * Contains all of the current ACLs sorted by (resource type, resource
name).
+ * An immutable array of all the current ACLs sorted by (resource type,
resource name).
*/
- private final ConcurrentSkipListSet<StandardAcl> aclsByResource;
Review Comment:
TreeSets are quite slow because they have poor memory locality. They also
use a lot more memory. Ideally we could use something like a BTree, but Java
doesn't have those, unfortunately...
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