HADOOP-7789. Improvements to site navigation.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1195876 13f79535-47bb-0310-9956-ffa450edef68

hadoop-common-project/hadoop-common/CHANGES.txt

@@ -515,6 +515,8 @@ Release 0.23.0 - 2011-11-01
 
     HADOOP-7782. Aggregate project javadocs. (tomwhite)
 
+    HADOOP-7789. Improvements to site navigation. (acmurthy) 
+
   OPTIMIZATIONS
   
     HADOOP-7333. Performance improvement in PureJavaCrc32. (Eric Caspole

hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-site/src/site/apt/index.apt.vm

@@ -11,32 +11,12 @@
 ~~ limitations under the License. See accompanying LICENSE file.
 
   ---
-  Apache Hadoop 0.23
+  Apache Hadoop NextGen MapReduce
   ---
   ---
   ${maven.build.timestamp}
-
-Apache Hadoop 0.23
-
-  Apache Hadoop 0.23 consists of significant improvements over the previous 
-  stable release (hadoop-0.20.205).
-
-  Here is a short overview of the improvments to both HDFS and MapReduce.
-
-* {HDFS Federation}
-
-  In order to scale the name service horizontally, <federation> uses multiple 
-  independent Namenodes/Namespaces. The Namenodes are federated, that is, the 
-  Namenodes are independent and don't require coordination with each other. 
-  The datanodes are used as common storage for blocks by all the Namenodes. 
-  Each datanode registers with all the Namenodes in the cluster. Datanodes 
-  send periodic heartbeats and block reports and handles commands from the 
-  Namenodes.
-
-  More details are available in the {{{./Federation.html}HDFS Federation}}
-  document.
   
-* {MapReduce NextGen aka YARN aka MRv2}
+MapReduce NextGen aka YARN aka MRv2
 
   The new architecture introduced in hadoop-0.23, divides the two major 
   functions of the JobTracker: resource management and job life-cycle management 
@@ -59,23 +39,12 @@ Apache Hadoop 0.23
   More details are available in the {{{./YARN.html}YARN}}
   document.
 
-* Release Documentation
-
-  * {{{./SingleCluster.html}Setting up a Single Node Cluster}}
-
-  * {{{./ClusterSetup.html}Setting up a full-fledged Hadoop Cluster}}
-  
-  * {{{./CapacityScheduler.html}Capacity Scheduler}}
-
-  * {{{./Federation.html}HDFS Federation feature description, configuration and 
-    management}}
+* Documentation
 
   * {{{./YARN.html}NextGen MapReduce}}
-
-* User Documentation
-
+  
   * {{{./WritingYarnApplications.html}Writing Yarn Applications}}
 
-  * {{{./apidocs/index.html}JavaDocs}}
+  * {{{./CapacityScheduler.html}Capacity Scheduler}}
 
 

hadoop-project/src/site/apt/index.apt.vm

@@ -11,12 +11,56 @@
 ~~ limitations under the License. See accompanying LICENSE file.
 
   ---
-  Hadoop ${project.version}
+  Apache Hadoop ${project.version}
   ---
   ---
   ${maven.build.timestamp}
   
-  
+Apache Hadoop 0.23
+
+  Apache Hadoop 0.23 consists of significant improvements over the previous 
+  stable release (hadoop-0.20.205).
+
+  Here is a short overview of the improvments to both HDFS and MapReduce.
+
+  * {HDFS Federation}
+
+  In order to scale the name service horizontally, federation uses multiple 
+  independent Namenodes/Namespaces. The Namenodes are federated, that is, the 
+  Namenodes are independent and don't require coordination with each other. 
+  The datanodes are used as common storage for blocks by all the Namenodes. 
+  Each datanode registers with all the Namenodes in the cluster. Datanodes 
+  send periodic heartbeats and block reports and handles commands from the 
+  Namenodes.
+
+  More details are available in the 
+  {{{./hadoop-yarn/hadoop-yarn-site/Federation.html}HDFS Federation}}
+  document.
+
+  * {MapReduce NextGen aka YARN aka MRv2}
+
+  The new architecture introduced in hadoop-0.23, divides the two major 
+  functions of the JobTracker: resource management and job life-cycle management 
+  into separate components.
+
+  The new ResourceManager manages the global assignment of compute resources to 
+  applications and the per-application ApplicationMaster manages the 
+  application’s scheduling and coordination. 
+
+  An application is either a single job in the sense of classic MapReduce jobs 
+  or a DAG of such jobs. 
+
+  The ResourceManager and per-machine NodeManager daemon, which manages the 
+  user processes on that machine, form the computation fabric. 
+
+  The per-application ApplicationMaster is, in effect, a framework specific 
+  library and is tasked with negotiating resources from the ResourceManager and 
+  working with the NodeManager(s) to execute and monitor the tasks.
+
+  More details are available in the 
+  {{{./hadoop-yarn/hadoop-yarn-site/YARN.html}YARN}}
+  document.
+
 Getting Started
 
   The Hadoop documentation includes the information you need to get started using

hadoop-project/src/site/site.xml

@@ -46,14 +46,10 @@
       <item name="Hadoop" href="http://hadoop.apache.org/"/>
     </breadcrumbs>
 
-    <menu name="Auth" inherit="top">
-      <item name="Overview" href="hadoop-auth/index.html"/>
-      <item name="Examples" href="hadoop-auth/Examples.html"/>
-      <item name="Configuration" href="hadoop-auth/Configuration.html"/>
-      <item name="Building" href="hadoop-auth/BuildingIt.html"/>
-    </menu>
-    
     <menu name="Common" inherit="top">
+      <item name="Overview" href="index.html"/>
+      <item name="Single Node Setup" href="hadoop-yarn/hadoop-yarn-site/SingleCluster.html"/>
+      <item name="Cluster Setup" href="hadoop-yarn/hadoop-yarn-site/ClusterSetup.html"/>
     </menu>
     
     <menu name="HDFS" inherit="top">
@@ -61,14 +57,20 @@
     </menu>
 
     <menu name="MapReduce" inherit="top">
-      <item name="Overview" href="hadoop-yarn/hadoop-yarn-site/index.html"/>
-      <item name="Single Node Setup" href="hadoop-yarn/hadoop-yarn-site/SingleCluster.html"/>
-      <item name="Cluster Setup" href="hadoop-yarn/hadoop-yarn-site/ClusterSetup.html"/>
+      <item name="YARN Architecture" href="hadoop-yarn/hadoop-yarn-site/YARN.html"/>
       <item name="Writing Yarn Applications" href="hadoop-yarn/hadoop-yarn-site/WritingYarnApplications.html"/>
       <item name="Capacity Scheduler" href="hadoop-yarn/hadoop-yarn-site/CapacityScheduler.html"/>
     </menu>
     
+    <menu name="Auth" inherit="top">
+      <item name="Overview" href="hadoop-auth/index.html"/>
+      <item name="Examples" href="hadoop-auth/Examples.html"/>
+      <item name="Configuration" href="hadoop-auth/Configuration.html"/>
+      <item name="Building" href="hadoop-auth/BuildingIt.html"/>
+    </menu>
+    
     <menu name="Reference" inherit="top">
+      <item name="Release Notes" href="hadoop-project-dist/hadoop-common/releasenotes.html"/>
       <item name="API docs" href="api/index.html"/>
       <item name="core-default.xml" href="hadoop-project-dist/hadoop-common/core-default.xml"/>
       <item name="hdfs-default.xml" href="hadoop-project-dist/hadoop-hdfs/hdfs-default.xml"/>