YARN-2034. Description for yarn.nodemanager.localizer.cache.target-size-mb is incorrect. Contributed by Chen He

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1619176 13f79535-47bb-0310-9956-ffa450edef68

hadoop-yarn-project/CHANGES.txt

@@ -220,6 +220,9 @@ Release 2.6.0 - UNRELEASED
     YARN-2249. Avoided AM release requests being lost on work preserving RM
     restart. (Jian He via zjshen)
 
+    YARN-2034. Description for yarn.nodemanager.localizer.cache.target-size-mb
+    is incorrect (Chen He via jlowe)
+
 Release 2.5.0 - UNRELEASED
 
   INCOMPATIBLE CHANGES

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/conf/YarnConfiguration.java

@@ -606,7 +606,11 @@ public class YarnConfiguration extends Configuration {
   public static final long DEFAULT_NM_LOCALIZER_CACHE_CLEANUP_INTERVAL_MS = 
     10 * 60 * 1000;
   
-  /** Target size of localizer cache in MB, per local directory.*/
+  /**
+   * Target size of localizer cache in MB, per nodemanager. It is a target
+   * retention size that only includes resources with PUBLIC and PRIVATE
+   * visibility and excludes resources with APPLICATION visibility
+   */
   public static final String NM_LOCALIZER_CACHE_TARGET_SIZE_MB =
     NM_PREFIX + "localizer.cache.target-size-mb";
   public static final long DEFAULT_NM_LOCALIZER_CACHE_TARGET_SIZE_MB = 10 * 1024;

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/resources/yarn-default.xml

@@ -757,7 +757,10 @@
   </property>
 
   <property>
-    <description>Target size of localizer cache in MB, per local directory.</description>
+    <description>Target size of localizer cache in MB, per nodemanager. It is
+      a target retention size that only includes resources with PUBLIC and 
+      PRIVATE visibility and excludes resources with APPLICATION visibility
+    </description>
     <name>yarn.nodemanager.localizer.cache.target-size-mb</name>
     <value>10240</value>
   </property>