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From szets...@apache.org
Subject svn commit: r1580019 - in /hadoop/common/branches/branch-2.4/hadoop-hdfs-project: ./ hadoop-hdfs/ hadoop-hdfs/src/site/apt/ hadoop-hdfs/src/site/resources/images/
Date Fri, 21 Mar 2014 18:51:47 GMT
Author: szetszwo
Date: Fri Mar 21 18:51:47 2014
New Revision: 1580019

URL: http://svn.apache.org/r1580019
Log:
svn merge -c 1580013 from trunk for HDFS-6138. Add a user guide for how to use viewfs with
federation.

Added:
    hadoop/common/branches/branch-2.4/hadoop-hdfs-project/hadoop-hdfs/src/site/apt/ViewFs.apt.vm
      - copied unchanged from r1580013, hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/site/apt/ViewFs.apt.vm
    hadoop/common/branches/branch-2.4/hadoop-hdfs-project/hadoop-hdfs/src/site/resources/images/viewfs_TypicalMountTable.png
      - copied unchanged from r1580013, hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/site/resources/images/viewfs_TypicalMountTable.png
Modified:
    hadoop/common/branches/branch-2.4/hadoop-hdfs-project/   (props changed)
    hadoop/common/branches/branch-2.4/hadoop-hdfs-project/hadoop-hdfs/   (props changed)
    hadoop/common/branches/branch-2.4/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
    hadoop/common/branches/branch-2.4/hadoop-hdfs-project/hadoop-hdfs/src/site/apt/Federation.apt.vm

Propchange: hadoop/common/branches/branch-2.4/hadoop-hdfs-project/
------------------------------------------------------------------------------
  Merged /hadoop/common/trunk/hadoop-hdfs-project:r1580013

Propchange: hadoop/common/branches/branch-2.4/hadoop-hdfs-project/hadoop-hdfs/
------------------------------------------------------------------------------
  Merged /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs:r1580013

Modified: hadoop/common/branches/branch-2.4/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-2.4/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt?rev=1580019&r1=1580018&r2=1580019&view=diff
==============================================================================
--- hadoop/common/branches/branch-2.4/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt (original)
+++ hadoop/common/branches/branch-2.4/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt Fri Mar
21 18:51:47 2014
@@ -160,9 +160,12 @@ Release 2.4.0 - UNRELEASED
     HDFS-6123. Do not log stack trace for ReplicaAlreadyExistsException and
     SocketTimeoutException.  (szetszwo)
 
-    HDFS-6129.  When a replica is not found for deletion, do not throw an
+    HDFS-6129. When a replica is not found for deletion, do not throw an
     exception.  (szetszwo)
 
+    HDFS-6138. Add a user guide for how to use viewfs with federation.
+    (sanjay and szetszwo via szetszwo)
+
   OPTIMIZATIONS
 
     HDFS-5790. LeaseManager.findPath is very slow when many leases need recovery

Modified: hadoop/common/branches/branch-2.4/hadoop-hdfs-project/hadoop-hdfs/src/site/apt/Federation.apt.vm
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-2.4/hadoop-hdfs-project/hadoop-hdfs/src/site/apt/Federation.apt.vm?rev=1580019&r1=1580018&r2=1580019&view=diff
==============================================================================
--- hadoop/common/branches/branch-2.4/hadoop-hdfs-project/hadoop-hdfs/src/site/apt/Federation.apt.vm
(original)
+++ hadoop/common/branches/branch-2.4/hadoop-hdfs-project/hadoop-hdfs/src/site/apt/Federation.apt.vm
Fri Mar 21 18:51:47 2014
@@ -70,6 +70,9 @@ HDFS Federation
   send periodic heartbeats and block reports and handles commands from the 
   Namenodes.
 
+  Users may use {{{./ViewFs.html}ViewFs}} to create personalized namespace views,
+  where ViewFs is analogous to client side mount tables in some Unix/Linux systems.
+
 [./images/federation.gif] HDFS Federation Architecture
 
 
@@ -214,13 +217,11 @@ HDFS Federation
   cluster_id in step 1. If they are different, the additional Namenodes 
   will not be part of the federated cluster.
 
-** Upgrading from older release to 0.23 and configuring federation
-
-  Older releases supported a single Namenode. Here are the steps enable 
-  federation:
+** Upgrading from an older release and configuring federation
 
-  Step 1: Upgrade the cluster to newer release. During upgrade you can 
-  provide a ClusterID as follows:
+  Older releases supported a single Namenode. 
+  Upgrade the cluster to newer release to enable federation
+  During upgrade you can provide a ClusterID as follows:
 
 ----
 > $HADOOP_PREFIX_HOME/bin/hdfs start namenode --config $HADOOP_CONF_DIR  -upgrade -clusterId
<cluster_ID>



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