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From szets...@apache.org
Subject svn commit: r1205630 - in /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-site/src/site/apt: ./ Federation.apt.vm WebHDFS.apt.vm
Date Wed, 23 Nov 2011 22:09:35 GMT
Author: szetszwo
Date: Wed Nov 23 22:09:34 2011
New Revision: 1205630

URL: http://svn.apache.org/viewvc?rev=1205630&view=rev
Log:
svn merge -c 1205626 from trunk for HDFS-2587.

Added:
    hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-site/src/site/apt/WebHDFS.apt.vm
      - copied unchanged from r1205626, hadoop/common/trunk/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-site/src/site/apt/WebHDFS.apt.vm
Modified:
    hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-site/src/site/apt/
  (props changed)
    hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-site/src/site/apt/Federation.apt.vm

Propchange: hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-site/src/site/apt/
------------------------------------------------------------------------------
--- svn:mergeinfo (added)
+++ svn:mergeinfo Wed Nov 23 22:09:34 2011
@@ -0,0 +1,2 @@
+/hadoop/common/trunk/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-site/src/site/apt:1161777,1161781,1162188,1162421,1162491,1162499,1162613,1162928,1162954,1162979,1163050,1163069,1163490,1163768,1164255,1164301,1164339,1166402,1167001,1167383,1170379,1170459,1171297,1172916,1173402,1176550,1177487,1177531,1177859,1177864,1189932,1189982,1195575,1196113,1196129,1204114,1204117,1204122,1204124,1204129,1204131,1204370,1204376,1204388,1205260,1205626
+/hadoop/core/branches/branch-0.19/mapred/hadoop-yarn/hadoop-yarn-site/src/site/apt:713112

Modified: hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-site/src/site/apt/Federation.apt.vm
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-site/src/site/apt/Federation.apt.vm?rev=1205630&r1=1205629&r2=1205630&view=diff
==============================================================================
--- hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-site/src/site/apt/Federation.apt.vm
(original)
+++ hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-site/src/site/apt/Federation.apt.vm
Wed Nov 23 22:09:34 2011
@@ -12,7 +12,7 @@
 ~~ limitations under the License. See accompanying LICENSE file.
 
   ---
-  Hadoop Map Reduce Next Generation-${project.version} - Cluster Setup
+  Hadoop Distributed File System-${project.version} - Federation
   ---
   ---
   ${maven.build.timestamp}
@@ -57,12 +57,12 @@ HDFS Federation
     * Storage - is provided by datanodes by storing blocks on the local file 
       system and allows read/write access.
 
-  The current HDFS architecture allows only a single namespace for the 
+  The prior HDFS architecture allows only a single namespace for the 
   entire cluster. A single Namenode manages this namespace. HDFS 
-  Federation addresses limitation of current architecture by adding 
+  Federation addresses limitation of the prior architecture by adding 
   support multiple Namenodes/namespaces to HDFS file system.
     
-* {HDFS Federation}
+* {Multiple Namenodes/Namespaces}
 
   In order to scale the name service horizontally, federation uses multiple 
   independent Namenodes/namespaces. The Namenodes are federated, that is, the 
@@ -103,9 +103,9 @@ HDFS Federation
     of small files benefit from scaling the namespace by adding more 
     Namenodes to the cluster
 
-  * Performance - File system operation throughput is currently limited 
-    by a single Namenode. Adding more Namenodes to the cluster scales the 
-    file system read/write operations throughput.
+  * Performance - File system operation throughput is limited by a single
+    Namenode in the prior architecture. Adding more Namenodes to the cluster
+    scales the file system read/write operations throughput.
 
   * Isolation - A single Namenode offers no isolation in multi user 
     environment. An experimental application can overload the Namenode 
@@ -265,7 +265,7 @@ HDFS Federation
 > $HADOOP_PREFIX_HOME/bin/start-dfs.sh
 ----
 
-  To start the cluster run the following command:
+  To stop the cluster run the following command:
 
 ----
 > $HADOOP_PREFIX_HOME/bin/stop-dfs.sh
@@ -300,7 +300,7 @@ HDFS Federation
 ** Decommissioning
 
   Decommissioning is similar to prior releases. The nodes that need to be 
-  decommissioning are added to the exclude file at all the Namenode. Each 
+  decomissioned are added to the exclude file at all the Namenode. Each 
   Namenode decommissions its Block Pool. When all the Namenodes finish 
   decommissioning a datanode, the datanode is considered to be decommissioned.
 



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