HDFS-9274. Default value of dfs.datanode.directoryscan.throttle.limit.ms.per.sec should be consistent. Contributed by Yi Liu.

Change-Id: Iafa2efb8f2eafd193b417690cc8794080b9d745b

hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt

@@ -2095,6 +2095,9 @@ Release 2.8.0 - UNRELEASED
 
     HDFS-3059. ssl-server.xml causes NullPointer. (Xiao Chen via wang)
 
+    HDFS-9274. Default value of dfs.datanode.directoryscan.throttle.limit.ms.per.sec
+    should be consistent. (Yi Liu via zhz)
+
 Release 2.7.2 - UNRELEASED
 
   INCOMPATIBLE CHANGES

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

@@ -637,7 +637,7 @@
 
 <property>
   <name>dfs.datanode.directoryscan.throttle.limit.ms.per.sec</name>
-  <value>0</value>
+  <value>1000</value>
   <description>The report compilation threads are limited to only running for
   a given number of milliseconds per second, as configured by the
   property. The limit is taken per thread, not in aggregate, e.g. setting