HDFS-11217. Annotate NameNode and DataNode MXBean interfaces as Private/Stable. Contributed by Jagadesh Kiran N.

(cherry picked from commit 5bd7dece920b20da95755cf7fbba9b3f39c7da69)

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataNodeMXBean.java

@@ -24,9 +24,11 @@ import java.util.Map;
 
 /**
  * 
- * This is the JMX management interface for data node information
+ * This is the JMX management interface for data node information.
+ * End users shouldn't be implementing these interfaces, and instead
+ * access this information through the JMX APIs.
  */
-@InterfaceAudience.Public
+@InterfaceAudience.Private
 @InterfaceStability.Stable
 public interface DataNodeMXBean {
   

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameNodeMXBean.java

@@ -24,9 +24,11 @@ import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.hdfs.protocol.RollingUpgradeInfo;
 
 /**
- * This is the JMX management interface for namenode information
+ * This is the JMX management interface for namenode information.
+ * End users shouldn't be implementing these interfaces, and instead
+ * access this information through the JMX APIs.
  */
-@InterfaceAudience.Public
+@InterfaceAudience.Private
 @InterfaceStability.Stable
 public interface NameNodeMXBean {
 

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameNodeStatusMXBean.java

@@ -21,10 +21,12 @@ import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 
 /**
- * This is the JMX management interface for NameNode status information
+ * This is the JMX management interface for NameNode status information.
+ * End users shouldn't be implementing these interfaces, and instead
+ * access this information through the JMX APIs. *
  */
-@InterfaceAudience.Public
-@InterfaceStability.Evolving
+@InterfaceAudience.Private
+@InterfaceStability.Stable
 public interface NameNodeStatusMXBean {
 
   /**