HDFS-16885. Fix TestHdfsConfigFields#testCompareConfigurationClassAgainstXml failed (#5283)

hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml

@@ -3433,6 +3433,15 @@
   </description>
 </property>
 
+<property>
+  <name>dfs.namenode.access-control-enforcer-reporting-threshold-ms</name>
+  <value>1000</value>
+  <description>
+    If an external AccessControlEnforcer runs for a long time to check permission with the FSnamesystem lock,
+    print a WARN log message. This sets how long must be run for logging to occur.
+  </description>
+</property>
+
 <property>
   <name>dfs.namenode.lock.detailed-metrics.enabled</name>
   <value>false</value>