HADOOP-10383 InterfaceStability annotations should have RetentionPolicy.RUNTIME

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1578694 13f79535-47bb-0310-9956-ffa450edef68

hadoop-common-project/hadoop-annotations/src/main/java/org/apache/hadoop/classification/InterfaceStability.java

@@ -18,6 +18,8 @@
 package org.apache.hadoop.classification;
 
 import java.lang.annotation.Documented;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
 
 /**
  * Annotation to inform users of how much to rely on a particular package,
@@ -32,12 +34,14 @@ public class InterfaceStability {
    * can break compatibility only at major release (ie. at m.0).
    */
   @Documented
+  @Retention(RetentionPolicy.RUNTIME)
   public @interface Stable {};
   
   /**
    * Evolving, but can break compatibility at minor release (i.e. m.x)
    */
   @Documented
+  @Retention(RetentionPolicy.RUNTIME)
   public @interface Evolving {};
   
   /**
@@ -45,5 +49,6 @@ public class InterfaceStability {
    * level of release granularity.
    */
   @Documented
+  @Retention(RetentionPolicy.RUNTIME)
   public @interface Unstable {};
 }