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>
