yifan-c commented on code in PR #2648:
URL: https://github.com/apache/cassandra/pull/2648#discussion_r1318866827


##########
src/java/org/apache/cassandra/auth/CIDRPermissionsCache.java:
##########
@@ -54,7 +54,7 @@ public CIDRPermissionsCache(Function<RoleResource, 
CIDRPermissions> loadFunction
      */
     public boolean invalidateCidrPermissions(String roleName)
     {
-        if (cache.getIfPresent(roleName) == null)
+        if (cache.getIfPresent(RoleResource.role(roleName)) == null)

Review Comment:
   yeah. Specifically, I changed the test, 
`testInvalidateSingleCidrPermission`. The assertions before and after 
invalidation were missing. The updated test fails before your patch. 
   
   ```java
           assertThat(((CassandraCIDRAuthorizer) 
DatabaseDescriptor.getCIDRAuthorizer()).has(ROLE_A)).isTrue();
   
           // invalidate cidr permission
           ToolRunner.ToolResult tool = 
ToolRunner.invokeNodetool("invalidatecidrpermissionscache", 
ROLE_A.getRoleName());
           tool.assertOnCleanExit();
   
           assertThat(((CassandraCIDRAuthorizer) 
DatabaseDescriptor.getCIDRAuthorizer()).has(ROLE_A)).isFalse();
   ``` 
   



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