sunchao commented on a change in pull request #2110:
URL: https://github.com/apache/hadoop/pull/2110#discussion_r451729071
##########
File path:
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/token/delegation/AbstractDelegationTokenSecretManager.java
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@@ -64,7 +69,13 @@ private String formatTokenId(TokenIdent id) {
*/
protected final Map<TokenIdent, DelegationTokenInformation> currentTokens
= new ConcurrentHashMap<>();
-
+
+ /**
+ * Map of token real owners to its token count. This is used to generate
+ * top users by owned tokens.
+ */
+ protected final Map<String, Long> tokenOwnerStats = new
ConcurrentHashMap<>();
Review comment:
OK. Can you add a comment for this though indicating that this only
support RBF for now?
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