Author: dhruba
Date: Mon May 25 04:50:02 2009
New Revision: 778276
URL: http://svn.apache.org/viewvc?rev=778276&view=rev
Log:
HADOOP-5900. Fix HDFS documentation to reflect the support for user quotas
and access permissions. (Ravi Phulari via dhruba)
Modified:
hadoop/core/trunk/src/docs/src/documentation/content/xdocs/hdfs_design.xml
Modified:
hadoop/core/trunk/src/docs/src/documentation/content/xdocs/hdfs_design.xml
URL:
http://svn.apache.org/viewvc/hadoop/core/trunk/src/docs/src/documentation/content/xdocs/hdfs_design.xml?rev=778276&r1=778275&r2=778276&view=diff
==============================================================================
--- hadoop/core/trunk/src/docs/src/documentation/content/xdocs/hdfs_design.xml
(original)
+++ hadoop/core/trunk/src/docs/src/documentation/content/xdocs/hdfs_design.xml
Mon May 25 04:50:02 2009
@@ -109,7 +109,7 @@
<section>
<title> The File System Namespace </title>
<p>
- HDFS supports a traditional hierarchical file organization. A user or an
application can create directories and store files inside these directories.
The file system namespace hierarchy is similar to most other existing file
systems; one can create and remove files, move a file from one directory to
another, or rename a file. HDFS does not yet implement user quotas. HDFS does
not support hard links or soft links. However, the HDFS architecture does not
preclude implementing these features.
+ HDFS supports a traditional hierarchical file organization. A user or an
application can create directories and store files inside these directories.
The file system namespace hierarchy is similar to most other existing file
systems; one can create and remove files, move a file from one directory to
another, or rename a file.HDFS does not support hard links or soft links.
However, the HDFS architecture does not preclude implementing these features.
</p>
<p>
The NameNode maintains the file system namespace. Any change to the file
system namespace or its properties is recorded by the NameNode. An application
can specify the number of replicas of a file that should be maintained by HDFS.
The number of copies of a file is called the replication factor of that file.
This information is stored by the NameNode.
