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From hair...@apache.org
Subject svn commit: r664144 - in /hadoop/core/trunk: ./ docs/ src/docs/src/documentation/content/xdocs/
Date Fri, 06 Jun 2008 21:45:51 GMT
Author: hairong
Date: Fri Jun  6 14:45:51 2008
New Revision: 664144

URL: http://svn.apache.org/viewvc?rev=664144&view=rev
Log:
HADOOP-3502. Quota API needs documentation in Forrest. Contributed by Hairong Kuang.

Added:
    hadoop/core/trunk/docs/hdfs_quota_admin_guide.html
    hadoop/core/trunk/docs/hdfs_quota_admin_guide.pdf
    hadoop/core/trunk/src/docs/src/documentation/content/xdocs/hdfs_quota_admin_guide.xml
Modified:
    hadoop/core/trunk/CHANGES.txt
    hadoop/core/trunk/docs/changes.html
    hadoop/core/trunk/docs/cluster_setup.html
    hadoop/core/trunk/docs/hdfs_design.html
    hadoop/core/trunk/docs/hdfs_permissions_guide.html
    hadoop/core/trunk/docs/hdfs_shell.html
    hadoop/core/trunk/docs/hdfs_user_guide.html
    hadoop/core/trunk/docs/hod.html
    hadoop/core/trunk/docs/hod_admin_guide.html
    hadoop/core/trunk/docs/hod_config_guide.html
    hadoop/core/trunk/docs/hod_user_guide.html
    hadoop/core/trunk/docs/index.html
    hadoop/core/trunk/docs/linkmap.html
    hadoop/core/trunk/docs/linkmap.pdf
    hadoop/core/trunk/docs/mapred_tutorial.html
    hadoop/core/trunk/docs/native_libraries.html
    hadoop/core/trunk/docs/quickstart.html
    hadoop/core/trunk/docs/streaming.html
    hadoop/core/trunk/src/docs/src/documentation/content/xdocs/site.xml

Modified: hadoop/core/trunk/CHANGES.txt
URL: http://svn.apache.org/viewvc/hadoop/core/trunk/CHANGES.txt?rev=664144&r1=664143&r2=664144&view=diff
==============================================================================
--- hadoop/core/trunk/CHANGES.txt (original)
+++ hadoop/core/trunk/CHANGES.txt Fri Jun  6 14:45:51 2008
@@ -151,6 +151,8 @@
 
     HADOOP-930. Add support for native S3 files.  (tomwhite via cutting)
 
+    HADOOP-3502. Quota API needs documentation in Forrest. (hairong)
+
   IMPROVEMENTS
    
     HADOOP-2928. Remove deprecated FileSystem.getContentLength().

Modified: hadoop/core/trunk/docs/changes.html
URL: http://svn.apache.org/viewvc/hadoop/core/trunk/docs/changes.html?rev=664144&r1=664143&r2=664144&view=diff
==============================================================================
--- hadoop/core/trunk/docs/changes.html (original)
+++ hadoop/core/trunk/docs/changes.html Fri Jun  6 14:45:51 2008
@@ -56,7 +56,7 @@
 </a></h2>
 <ul id="trunk_(unreleased_changes)_">
   <li><a href="javascript:toggleList('trunk_(unreleased_changes)_._incompatible_changes_')">  INCOMPATIBLE CHANGES
-</a>&nbsp;&nbsp;&nbsp;(14)
+</a>&nbsp;&nbsp;&nbsp;(18)
     <ol id="trunk_(unreleased_changes)_._incompatible_changes_">
       <li><a href="http://issues.apache.org/jira/browse/HADOOP-2703">HADOOP-2703</a>.  The default options to fsck skips checking files
 that are being written to. The output of fsck is incompatible
@@ -106,10 +106,20 @@
 recovery. The block gets a new  generation stamp.
 (Tsz Wo (Nicholas), SZE via dhruba)
 </li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-2909">HADOOP-2909</a>. Improve IPC idle connection management. Property
+ipc.client.maxidletime is removed from the default configuration,
+instead it is defined as twice of the ipc.client.connection.maxidletime.
+A connection with outstanding requests won't be treated as idle.<br />(hairong)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-3459">HADOOP-3459</a>. Change in the output format of dfs -ls to more closely match
+/bin/ls. New format is: perm repl owner group size date name<br />(Mukund Madhugiri via omally)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-3113">HADOOP-3113</a>. An fsync invoked on a HDFS file really really persists data! The datanode
+moves blocks in the tmp directory to the real block directory on a datanode-restart.<br />(dhruba)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-3452">HADOOP-3452</a>. Change fsck to return non-zero status for a corrupt
+FileSystem.<br />(lohit vijayarenu via cdouglas)</li>
     </ol>
   </li>
   <li><a href="javascript:toggleList('trunk_(unreleased_changes)_._new_features_')">  NEW FEATURES
-</a>&nbsp;&nbsp;&nbsp;(15)
+</a>&nbsp;&nbsp;&nbsp;(22)
     <ol id="trunk_(unreleased_changes)_._new_features_">
       <li><a href="http://issues.apache.org/jira/browse/HADOOP-3074">HADOOP-3074</a>. Provides a UrlStreamHandler for DFS and other FS,
 relying on FileSystem<br />(taton)</li>
@@ -145,10 +155,22 @@
       <li><a href="http://issues.apache.org/jira/browse/HADOOP-3250">HADOOP-3250</a>. Extend FileSystem API to allow appending to files.
 (Tsz Wo (Nicholas), SZE via cdouglas)
 </li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-3177">HADOOP-3177</a>. Implement Syncable interface for FileSystem.
+(Tsz Wo (Nicholas), SZE via dhruba)
+</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-1328">HADOOP-1328</a>. Implement user counters in streaming.<br />(tomwhite via
+omalley)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-3187">HADOOP-3187</a>. Quotas for namespace management.<br />(Hairong Kuang via ddas)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-3307">HADOOP-3307</a>. Support for Archives in Hadoop.<br />(Mahadev Konar via ddas)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-3460">HADOOP-3460</a>. Add SequenceFileAsBinaryOutputFormat to permit direct
+writes of serialized data.<br />(Koji Noguchi via cdouglas)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-3230">HADOOP-3230</a>. Add ability to get counter values from command
+line.<br />(tomwhite via omalley)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-930">HADOOP-930</a>. Add support for native S3 files.<br />(tomwhite via cutting)</li>
     </ol>
   </li>
   <li><a href="javascript:toggleList('trunk_(unreleased_changes)_._improvements_')">  IMPROVEMENTS
-</a>&nbsp;&nbsp;&nbsp;(22)
+</a>&nbsp;&nbsp;&nbsp;(30)
     <ol id="trunk_(unreleased_changes)_._improvements_">
       <li><a href="http://issues.apache.org/jira/browse/HADOOP-2928">HADOOP-2928</a>. Remove deprecated FileSystem.getContentLength().<br />(Lohit Vjayarenu via rangadi)</li>
       <li><a href="http://issues.apache.org/jira/browse/HADOOP-3130">HADOOP-3130</a>. Make the connect timeout smaller for getFile.<br />(Amar Ramesh Kamat via ddas)</li>
@@ -196,10 +218,32 @@
 datanode, now can report corrupt replicas received from src node to
 the namenode.<br />(Lohit Vijayarenu via rangadi)</li>
       <li><a href="http://issues.apache.org/jira/browse/HADOOP-3434">HADOOP-3434</a>. Retain the cause of the bind failure in Server::bind.<br />(Steve Loughran via cdouglas)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-3429">HADOOP-3429</a>. Increases the size of the buffers used for the communication
+for Streaming jobs.<br />(Amareshwari Sriramadasu via ddas)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-3486">HADOOP-3486</a>. Change default for initial block report to 0 seconds
+and document it.<br />(Sanjay Radia via omalley)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-3448">HADOOP-3448</a>. Improve the text in the assertion making sure the
+layout versions are consistent in the data node.<br />(Steve Loughran
+via omalley)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-2095">HADOOP-2095</a>. Improve the Map-Reduce shuffle/merge by cutting down
+buffer-copies; changed intermediate sort/merge to use the new IFile format
+rather than SequenceFiles and compression of map-outputs is now
+implemented by compressing the entire file rather than SequenceFile
+compression. Shuffle also has been changed to use a simple byte-buffer
+manager rather than the InMemoryFileSystem.
+Configuration changes to hadoop-default.xml:
+  deprecated mapred.map.output.compression.type<br />(acmurthy)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-236">HADOOP-236</a>. JobTacker now refuses connection from a task tracker with a
+different version number.<br />(Sharad Agarwal via ddas)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-3427">HADOOP-3427</a>. Improves the shuffle scheduler. It now waits for notifications
+from shuffle threads when it has scheduled enough, before scheduling more.<br />(ddas)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-2393">HADOOP-2393</a>. Moves the handling of dir deletions in the tasktracker to
+a separate thread.<br />(Amareshwari Sriramadasu via ddas)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-3501">HADOOP-3501</a>. Deprecate InMemoryFileSystem.<br />(cutting via omalley)</li>
     </ol>
   </li>
   <li><a href="javascript:toggleList('trunk_(unreleased_changes)_._optimizations_')">  OPTIMIZATIONS
-</a>&nbsp;&nbsp;&nbsp;(9)
+</a>&nbsp;&nbsp;&nbsp;(10)
     <ol id="trunk_(unreleased_changes)_._optimizations_">
       <li><a href="http://issues.apache.org/jira/browse/HADOOP-3274">HADOOP-3274</a>. The default constructor of BytesWritable creates empty
 byte array. (Tsz Wo (Nicholas), SZE via shv)
@@ -217,10 +261,13 @@
       <li><a href="http://issues.apache.org/jira/browse/HADOOP-3369">HADOOP-3369</a>. Fast block processing during name-node startup.<br />(shv)</li>
       <li><a href="http://issues.apache.org/jira/browse/HADOOP-1702">HADOOP-1702</a>. Reduce buffer copies when data is written to DFS.
 DataNodes take 30% less CPU while writing data.<br />(rangadi)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-3095">HADOOP-3095</a>. Speed up split generation in the FileInputSplit,
+especially for non-HDFS file systems. Deprecates
+InputFormat.validateInput.<br />(tomwhite via omalley)</li>
     </ol>
   </li>
   <li><a href="javascript:toggleList('trunk_(unreleased_changes)_._bug_fixes_')">  BUG FIXES
-</a>&nbsp;&nbsp;&nbsp;(58)
+</a>&nbsp;&nbsp;&nbsp;(72)
     <ol id="trunk_(unreleased_changes)_._bug_fixes_">
       <li><a href="http://issues.apache.org/jira/browse/HADOOP-2905">HADOOP-2905</a>. 'fsck -move' triggers NPE in NameNode.<br />(Lohit Vjayarenu via rangadi)</li>
       <li>Increment ClientProtocol.versionID missed by <a href="http://issues.apache.org/jira/browse/HADOOP-2585">HADOOP-2585</a>.<br />(shv)</li>
@@ -343,6 +390,35 @@
 single spill.<br />(omalley via cdouglas)</li>
       <li><a href="http://issues.apache.org/jira/browse/HADOOP-3454">HADOOP-3454</a>. Fix Text::find to search only valid byte ranges.<br />(Chad Whipkey
 via cdouglas)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-3417">HADOOP-3417</a>. Removes the static configuration variable, commandLineConfig from
+JobClient. Moves the cli parsing from JobShell to GenericOptionsParser.
+Thus removes the class org.apache.hadoop.mapred.JobShell.<br />(Amareshwari Sriramadasu via ddas)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-2132">HADOOP-2132</a>. Only RUNNING/PREP jobs can be killed.<br />(Jothi Padmanabhan via ddas)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-3472">HADOOP-3472</a> MapFile.Reader getClosest() function returns incorrect results
+when before is true<br />(Todd Lipcon via Stack)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-3476">HADOOP-3476</a>. Code cleanup in fuse-dfs.<br />(Peter Wyckoff via dhruba)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-2427">HADOOP-2427</a>. Ensure that the cwd of completed tasks is cleaned-up
+correctly on task-completion.<br />(Amareshwari Sri Ramadasu via acmurthy)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-2565">HADOOP-2565</a>. Remove DFSPath cache of FileStatus.
+(Tsz Wo (Nicholas), SZE via hairong)
+</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-3326">HADOOP-3326</a>. Cleanup the local-fs and in-memory merge in the ReduceTask by
+spawing only one thread each for the on-disk and in-memory merge.<br />(Sharad Agarwal via acmurthy)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-3493">HADOOP-3493</a>. Fix TestStreamingFailure to use FileUtil.fullyDelete to
+ensure correct cleanup.<br />(Lohit Vijayarenu via acmurthy)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-3455">HADOOP-3455</a>. Fix NPE in ipc.Client in case of connection failure and
+improve its synchronization.<br />(hairong)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-3240">HADOOP-3240</a>. Fix a testcase to not create files in the current directory.
+Instead the file is created in the test directory<br />(Mahadev Konar via ddas)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-3496">HADOOP-3496</a>.  Fix failure in TestHarFileSystem.testArchives due to change
+in <a href="http://issues.apache.org/jira/browse/HADOOP-3095">HADOOP-3095</a>.<br />(tomwhite)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-3135">HADOOP-3135</a>. Get the system directory from the JobTracker instead of from
+the conf.<br />(Subramaniam Krishnan via ddas)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-3503">HADOOP-3503</a>. Fix a race condition when client and namenode start simultaneous
+recovery of the same block.  (dhruba &amp; Tsz Wo (Nicholas), SZE)
+</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-3440">HADOOP-3440</a>. Fixes DistributedCache to not create symlinks for paths which
+don't have fragments even when createSymLink is true.<br />(Abhijit Bagri via ddas)</li>
     </ol>
   </li>
 </ul>

Modified: hadoop/core/trunk/docs/cluster_setup.html
URL: http://svn.apache.org/viewvc/hadoop/core/trunk/docs/cluster_setup.html?rev=664144&r1=664143&r2=664144&view=diff
==============================================================================
--- hadoop/core/trunk/docs/cluster_setup.html (original)
+++ hadoop/core/trunk/docs/cluster_setup.html Fri Jun  6 14:45:51 2008
@@ -123,6 +123,9 @@
 <a href="hdfs_permissions_guide.html">HDFS Permissions Guide</a>
 </div>
 <div class="menuitem">
+<a href="hdfs_quota_admin_guide.html">HDFS Quotas Administrator Guide</a>
+</div>
+<div class="menuitem">
 <a href="hdfs_shell.html">FS Shell Guide</a>
 </div>
 <div class="menuitem">

Modified: hadoop/core/trunk/docs/hdfs_design.html
URL: http://svn.apache.org/viewvc/hadoop/core/trunk/docs/hdfs_design.html?rev=664144&r1=664143&r2=664144&view=diff
==============================================================================
--- hadoop/core/trunk/docs/hdfs_design.html (original)
+++ hadoop/core/trunk/docs/hdfs_design.html Fri Jun  6 14:45:51 2008
@@ -125,6 +125,9 @@
 <a href="hdfs_permissions_guide.html">HDFS Permissions Guide</a>
 </div>
 <div class="menuitem">
+<a href="hdfs_quota_admin_guide.html">HDFS Quotas Administrator Guide</a>
+</div>
+<div class="menuitem">
 <a href="hdfs_shell.html">FS Shell Guide</a>
 </div>
 <div class="menuitem">

Modified: hadoop/core/trunk/docs/hdfs_permissions_guide.html
URL: http://svn.apache.org/viewvc/hadoop/core/trunk/docs/hdfs_permissions_guide.html?rev=664144&r1=664143&r2=664144&view=diff
==============================================================================
--- hadoop/core/trunk/docs/hdfs_permissions_guide.html (original)
+++ hadoop/core/trunk/docs/hdfs_permissions_guide.html Fri Jun  6 14:45:51 2008
@@ -125,6 +125,9 @@
 <div class="menupagetitle">HDFS Permissions Guide</div>
 </div>
 <div class="menuitem">
+<a href="hdfs_quota_admin_guide.html">HDFS Quotas Administrator Guide</a>
+</div>
+<div class="menuitem">
 <a href="hdfs_shell.html">FS Shell Guide</a>
 </div>
 <div class="menuitem">

Added: hadoop/core/trunk/docs/hdfs_quota_admin_guide.html
URL: http://svn.apache.org/viewvc/hadoop/core/trunk/docs/hdfs_quota_admin_guide.html?rev=664144&view=auto
==============================================================================
--- hadoop/core/trunk/docs/hdfs_quota_admin_guide.html (added)
+++ hadoop/core/trunk/docs/hdfs_quota_admin_guide.html Fri Jun  6 14:45:51 2008
@@ -0,0 +1,278 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+<html>
+<head>
+<META http-equiv="Content-Type" content="text/html; charset=UTF-8">
+<meta content="Apache Forrest" name="Generator">
+<meta name="Forrest-version" content="0.8">
+<meta name="Forrest-skin-name" content="pelt">
+<title>
+      Hadoop DFS Name Space Quotas Administrator Guide
+    </title>
+<link type="text/css" href="skin/basic.css" rel="stylesheet">
+<link media="screen" type="text/css" href="skin/screen.css" rel="stylesheet">
+<link media="print" type="text/css" href="skin/print.css" rel="stylesheet">
+<link type="text/css" href="skin/profile.css" rel="stylesheet">
+<script src="skin/getBlank.js" language="javascript" type="text/javascript"></script><script src="skin/getMenu.js" language="javascript" type="text/javascript"></script><script src="skin/fontsize.js" language="javascript" type="text/javascript"></script>
+<link rel="shortcut icon" href="images/favicon.ico">
+</head>
+<body onload="init()">
+<script type="text/javascript">ndeSetTextSize();</script>
+<div id="top">
+<!--+
+    |breadtrail
+    +-->
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+<a href="http://www.apache.org/">Apache</a> &gt; <a href="http://hadoop.apache.org/">Hadoop</a> &gt; <a href="http://hadoop.apache.org/core/">Core</a><script src="skin/breadcrumbs.js" language="JavaScript" type="text/javascript"></script>
+</div>
+<!--+
+    |header
+    +-->
+<div class="header">
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+    +-->
+<div class="grouplogo">
+<a href="http://hadoop.apache.org/"><img class="logoImage" alt="Hadoop" src="images/hadoop-logo.jpg" title="Apache Hadoop"></a>
+</div>
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+                    <input name="Search" value="Search" type="submit">
+</form>
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+<li>
+<a class="unselected" href="http://hadoop.apache.org/core/">Project</a>
+</li>
+<li>
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+</li>
+<li class="current">
+<a class="selected" href="index.html">Hadoop 0.18 Documentation</a>
+</li>
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+<!--+
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+<div onclick="SwitchMenu('menu_selected_1.1', 'skin/')" id="menu_selected_1.1Title" class="menutitle" style="background-image: url('skin/images/chapter_open.gif');">Documentation</div>
+<div id="menu_selected_1.1" class="selectedmenuitemgroup" style="display: block;">
+<div class="menuitem">
+<a href="index.html">Overview</a>
+</div>
+<div class="menuitem">
+<a href="quickstart.html">Quickstart</a>
+</div>
+<div class="menuitem">
+<a href="cluster_setup.html">Cluster Setup</a>
+</div>
+<div class="menuitem">
+<a href="hdfs_design.html">HDFS Architecture</a>
+</div>
+<div class="menuitem">
+<a href="hdfs_user_guide.html">HDFS User Guide</a>
+</div>
+<div class="menuitem">
+<a href="hdfs_permissions_guide.html">HDFS Permissions Guide</a>
+</div>
+<div class="menupage">
+<div class="menupagetitle">HDFS Quotas Administrator Guide</div>
+</div>
+<div class="menuitem">
+<a href="hdfs_shell.html">FS Shell Guide</a>
+</div>
+<div class="menuitem">
+<a href="mapred_tutorial.html">Map-Reduce Tutorial</a>
+</div>
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+<div class="menuitem">
+<a href="http://hadoop.apache.org/core/mailing_lists.html">Mailing Lists</a>
+</div>
+<div class="menuitem">
+<a href="releasenotes.html">Release Notes</a>
+</div>
+<div class="menuitem">
+<a href="changes.html">All Changes</a>
+</div>
+</div>
+<div id="credit"></div>
+<div id="roundbottom">
+<img style="display: none" class="corner" height="15" width="15" alt="" src="skin/images/rc-b-l-15-1body-2menu-3menu.png"></div>
+<!--+
+  |alternative credits
+  +-->
+<div id="credit2"></div>
+</div>
+<!--+
+    |end Menu
+    +-->
+<!--+
+    |start content
+    +-->
+<div id="content">
+<div title="Portable Document Format" class="pdflink">
+<a class="dida" href="hdfs_quota_admin_guide.pdf"><img alt="PDF -icon" src="skin/images/pdfdoc.gif" class="skin"><br>
+        PDF</a>
+</div>
+<h1>
+      Hadoop DFS Name Space Quotas Administrator Guide
+    </h1>
+      
+<p>
+      HDFS allows the administrator to set quotas on individual directories. 
+      Newly created directories have no associated quota. 
+      The largest quota is Long.Max_Value. A quota of one forces a directory 
+      to remain empty.
+      </p>
+
+      
+<p>
+      The directory quota is a hard limit on the number of names in the tree 
+      rooted at that directory. File/directory creations fault if the quota 
+      would be exceeded. Quotas stick to renamed directories; the rename 
+      operation faults if operation would result in a quota violation. 
+      The attempt to set a quota faults if the directory would be in violation 
+      of the new quota.
+      </p>
+
+      
+<p>
+      Quotas are persistent with the fsimage. When starting, if the fsimage 
+      is immediately in violation of aquota (perhaps the fsimage was 
+      surreptitiously modified), startup operation fails with an error report. 
+      Setting/removing a quota creates a journal entry.
+      </p> 
+
+      
+<p>
+      The following new commands or new options are added to support quotas. 
+      The first two are administration commands.
+      </p>
+
+      
+<ul>
+      
+<li>
+      
+<strong><em>dfsadmin -setquota &lt;N&gt; &lt;directory&gt;...&lt;directory&gt;</em></strong> 
+      
+<br>
+      Set the quota <em></em> for each directory. Best effort for each directory,
+      with faults reported if <em>N</em> is not a positive long integer, 
+      the directory does not exist or it is a file, or the directory would 
+      immediately exceed the new quota.
+      </li>
+  
+      
+<li>
+      
+<strong><em>dfsadmin -clrquota &lt;directory&gt;...&lt;director&gt;</em></strong>
+<br> 
+      Remove any quota for each directory. Best effort for each directory, 
+      with faults reported if the directory does not exist or it is a file. 
+      It is not a fault if the directory has no quota.
+      </li>
+  
+      
+<li>
+      
+<strong><em>fs -count -q &lt;directory&gt;...&lt;directory&gt;</em></strong>
+<br>
+      With the <em>-q</em> option, also report the quota value set for each 
+      directory, and the available quota remaining. If the directory does not have 
+      a quota set, the reported values are <em>none</em> and <em>inf</em>.
+      </li>
+      
+</ul>
+   
+</div>
+<!--+
+    |end content
+    +-->
+<div class="clearboth">&nbsp;</div>
+</div>
+<div id="footer">
+<!--+
+    |start bottomstrip
+    +-->
+<div class="lastmodified">
+<script type="text/javascript"><!--
+document.write("Last Published: " + document.lastModified);
+//  --></script>
+</div>
+<div class="copyright">
+        Copyright &copy;
+         2007 <a href="http://www.apache.org/licenses/">The Apache Software Foundation.</a>
+</div>
+<!--+
+    |end bottomstrip
+    +-->
+</div>
+</body>
+</html>

Added: hadoop/core/trunk/docs/hdfs_quota_admin_guide.pdf
URL: http://svn.apache.org/viewvc/hadoop/core/trunk/docs/hdfs_quota_admin_guide.pdf?rev=664144&view=auto
==============================================================================
--- hadoop/core/trunk/docs/hdfs_quota_admin_guide.pdf (added)
+++ hadoop/core/trunk/docs/hdfs_quota_admin_guide.pdf Fri Jun  6 14:45:51 2008
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Modified: hadoop/core/trunk/docs/hdfs_shell.html
URL: http://svn.apache.org/viewvc/hadoop/core/trunk/docs/hdfs_shell.html?rev=664144&r1=664143&r2=664144&view=diff
==============================================================================
--- hadoop/core/trunk/docs/hdfs_shell.html (original)
+++ hadoop/core/trunk/docs/hdfs_shell.html Fri Jun  6 14:45:51 2008
@@ -122,6 +122,9 @@
 <div class="menuitem">
 <a href="hdfs_permissions_guide.html">HDFS Permissions Guide</a>
 </div>
+<div class="menuitem">
+<a href="hdfs_quota_admin_guide.html">HDFS Quotas Administrator Guide</a>
+</div>
 <div class="menupage">
 <div class="menupagetitle">FS Shell Guide</div>
 </div>

Modified: hadoop/core/trunk/docs/hdfs_user_guide.html
URL: http://svn.apache.org/viewvc/hadoop/core/trunk/docs/hdfs_user_guide.html?rev=664144&r1=664143&r2=664144&view=diff
==============================================================================
--- hadoop/core/trunk/docs/hdfs_user_guide.html (original)
+++ hadoop/core/trunk/docs/hdfs_user_guide.html Fri Jun  6 14:45:51 2008
@@ -125,6 +125,9 @@
 <a href="hdfs_permissions_guide.html">HDFS Permissions Guide</a>
 </div>
 <div class="menuitem">
+<a href="hdfs_quota_admin_guide.html">HDFS Quotas Administrator Guide</a>
+</div>
+<div class="menuitem">
 <a href="hdfs_shell.html">FS Shell Guide</a>
 </div>
 <div class="menuitem">

Modified: hadoop/core/trunk/docs/hod.html
URL: http://svn.apache.org/viewvc/hadoop/core/trunk/docs/hod.html?rev=664144&r1=664143&r2=664144&view=diff
==============================================================================
--- hadoop/core/trunk/docs/hod.html (original)
+++ hadoop/core/trunk/docs/hod.html Fri Jun  6 14:45:51 2008
@@ -125,6 +125,9 @@
 <a href="hdfs_permissions_guide.html">HDFS Permissions Guide</a>
 </div>
 <div class="menuitem">
+<a href="hdfs_quota_admin_guide.html">HDFS Quotas Administrator Guide</a>
+</div>
+<div class="menuitem">
 <a href="hdfs_shell.html">FS Shell Guide</a>
 </div>
 <div class="menuitem">

Modified: hadoop/core/trunk/docs/hod_admin_guide.html
URL: http://svn.apache.org/viewvc/hadoop/core/trunk/docs/hod_admin_guide.html?rev=664144&r1=664143&r2=664144&view=diff
==============================================================================
--- hadoop/core/trunk/docs/hod_admin_guide.html (original)
+++ hadoop/core/trunk/docs/hod_admin_guide.html Fri Jun  6 14:45:51 2008
@@ -125,6 +125,9 @@
 <a href="hdfs_permissions_guide.html">HDFS Permissions Guide</a>
 </div>
 <div class="menuitem">
+<a href="hdfs_quota_admin_guide.html">HDFS Quotas Administrator Guide</a>
+</div>
+<div class="menuitem">
 <a href="hdfs_shell.html">FS Shell Guide</a>
 </div>
 <div class="menuitem">

Modified: hadoop/core/trunk/docs/hod_config_guide.html
URL: http://svn.apache.org/viewvc/hadoop/core/trunk/docs/hod_config_guide.html?rev=664144&r1=664143&r2=664144&view=diff
==============================================================================
--- hadoop/core/trunk/docs/hod_config_guide.html (original)
+++ hadoop/core/trunk/docs/hod_config_guide.html Fri Jun  6 14:45:51 2008
@@ -125,6 +125,9 @@
 <a href="hdfs_permissions_guide.html">HDFS Permissions Guide</a>
 </div>
 <div class="menuitem">
+<a href="hdfs_quota_admin_guide.html">HDFS Quotas Administrator Guide</a>
+</div>
+<div class="menuitem">
 <a href="hdfs_shell.html">FS Shell Guide</a>
 </div>
 <div class="menuitem">

Modified: hadoop/core/trunk/docs/hod_user_guide.html
URL: http://svn.apache.org/viewvc/hadoop/core/trunk/docs/hod_user_guide.html?rev=664144&r1=664143&r2=664144&view=diff
==============================================================================
--- hadoop/core/trunk/docs/hod_user_guide.html (original)
+++ hadoop/core/trunk/docs/hod_user_guide.html Fri Jun  6 14:45:51 2008
@@ -125,6 +125,9 @@
 <a href="hdfs_permissions_guide.html">HDFS Permissions Guide</a>
 </div>
 <div class="menuitem">
+<a href="hdfs_quota_admin_guide.html">HDFS Quotas Administrator Guide</a>
+</div>
+<div class="menuitem">
 <a href="hdfs_shell.html">FS Shell Guide</a>
 </div>
 <div class="menuitem">

Modified: hadoop/core/trunk/docs/index.html
URL: http://svn.apache.org/viewvc/hadoop/core/trunk/docs/index.html?rev=664144&r1=664143&r2=664144&view=diff
==============================================================================
--- hadoop/core/trunk/docs/index.html (original)
+++ hadoop/core/trunk/docs/index.html Fri Jun  6 14:45:51 2008
@@ -123,6 +123,9 @@
 <a href="hdfs_permissions_guide.html">HDFS Permissions Guide</a>
 </div>
 <div class="menuitem">
+<a href="hdfs_quota_admin_guide.html">HDFS Quotas Administrator Guide</a>
+</div>
+<div class="menuitem">
 <a href="hdfs_shell.html">FS Shell Guide</a>
 </div>
 <div class="menuitem">

Modified: hadoop/core/trunk/docs/linkmap.html
URL: http://svn.apache.org/viewvc/hadoop/core/trunk/docs/linkmap.html?rev=664144&r1=664143&r2=664144&view=diff
==============================================================================
--- hadoop/core/trunk/docs/linkmap.html (original)
+++ hadoop/core/trunk/docs/linkmap.html Fri Jun  6 14:45:51 2008
@@ -123,6 +123,9 @@
 <a href="hdfs_permissions_guide.html">HDFS Permissions Guide</a>
 </div>
 <div class="menuitem">
+<a href="hdfs_quota_admin_guide.html">HDFS Quotas Administrator Guide</a>
+</div>
+<div class="menuitem">
 <a href="hdfs_shell.html">FS Shell Guide</a>
 </div>
 <div class="menuitem">
@@ -230,6 +233,12 @@
     
 <ul>
 <li>
+<a href="hdfs_quota_admin_guide.html">HDFS Quotas Administrator Guide</a>&nbsp;&nbsp;___________________&nbsp;&nbsp;<em>hdfs</em>
+</li>
+</ul>
+    
+<ul>
+<li>
 <a href="hdfs_shell.html">FS Shell Guide</a>&nbsp;&nbsp;___________________&nbsp;&nbsp;<em>fs</em>
 </li>
 </ul>

Modified: hadoop/core/trunk/docs/linkmap.pdf
URL: http://svn.apache.org/viewvc/hadoop/core/trunk/docs/linkmap.pdf?rev=664144&r1=664143&r2=664144&view=diff
==============================================================================
--- hadoop/core/trunk/docs/linkmap.pdf (original)
+++ hadoop/core/trunk/docs/linkmap.pdf Fri Jun  6 14:45:51 2008
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Modified: hadoop/core/trunk/docs/mapred_tutorial.html
URL: http://svn.apache.org/viewvc/hadoop/core/trunk/docs/mapred_tutorial.html?rev=664144&r1=664143&r2=664144&view=diff
==============================================================================
--- hadoop/core/trunk/docs/mapred_tutorial.html (original)
+++ hadoop/core/trunk/docs/mapred_tutorial.html Fri Jun  6 14:45:51 2008
@@ -123,6 +123,9 @@
 <a href="hdfs_permissions_guide.html">HDFS Permissions Guide</a>
 </div>
 <div class="menuitem">
+<a href="hdfs_quota_admin_guide.html">HDFS Quotas Administrator Guide</a>
+</div>
+<div class="menuitem">
 <a href="hdfs_shell.html">FS Shell Guide</a>
 </div>
 <div class="menupage">

Modified: hadoop/core/trunk/docs/native_libraries.html
URL: http://svn.apache.org/viewvc/hadoop/core/trunk/docs/native_libraries.html?rev=664144&r1=664143&r2=664144&view=diff
==============================================================================
--- hadoop/core/trunk/docs/native_libraries.html (original)
+++ hadoop/core/trunk/docs/native_libraries.html Fri Jun  6 14:45:51 2008
@@ -123,6 +123,9 @@
 <a href="hdfs_permissions_guide.html">HDFS Permissions Guide</a>
 </div>
 <div class="menuitem">
+<a href="hdfs_quota_admin_guide.html">HDFS Quotas Administrator Guide</a>
+</div>
+<div class="menuitem">
 <a href="hdfs_shell.html">FS Shell Guide</a>
 </div>
 <div class="menuitem">

Modified: hadoop/core/trunk/docs/quickstart.html
URL: http://svn.apache.org/viewvc/hadoop/core/trunk/docs/quickstart.html?rev=664144&r1=664143&r2=664144&view=diff
==============================================================================
--- hadoop/core/trunk/docs/quickstart.html (original)
+++ hadoop/core/trunk/docs/quickstart.html Fri Jun  6 14:45:51 2008
@@ -123,6 +123,9 @@
 <a href="hdfs_permissions_guide.html">HDFS Permissions Guide</a>
 </div>
 <div class="menuitem">
+<a href="hdfs_quota_admin_guide.html">HDFS Quotas Administrator Guide</a>
+</div>
+<div class="menuitem">
 <a href="hdfs_shell.html">FS Shell Guide</a>
 </div>
 <div class="menuitem">

Modified: hadoop/core/trunk/docs/streaming.html
URL: http://svn.apache.org/viewvc/hadoop/core/trunk/docs/streaming.html?rev=664144&r1=664143&r2=664144&view=diff
==============================================================================
--- hadoop/core/trunk/docs/streaming.html (original)
+++ hadoop/core/trunk/docs/streaming.html Fri Jun  6 14:45:51 2008
@@ -126,6 +126,9 @@
 <a href="hdfs_permissions_guide.html">HDFS Permissions Guide</a>
 </div>
 <div class="menuitem">
+<a href="hdfs_quota_admin_guide.html">HDFS Quotas Administrator Guide</a>
+</div>
+<div class="menuitem">
 <a href="hdfs_shell.html">FS Shell Guide</a>
 </div>
 <div class="menuitem">

Added: hadoop/core/trunk/src/docs/src/documentation/content/xdocs/hdfs_quota_admin_guide.xml
URL: http://svn.apache.org/viewvc/hadoop/core/trunk/src/docs/src/documentation/content/xdocs/hdfs_quota_admin_guide.xml?rev=664144&view=auto
==============================================================================
--- hadoop/core/trunk/src/docs/src/documentation/content/xdocs/hdfs_quota_admin_guide.xml (added)
+++ hadoop/core/trunk/src/docs/src/documentation/content/xdocs/hdfs_quota_admin_guide.xml Fri Jun  6 14:45:51 2008
@@ -0,0 +1,84 @@
+<?xml version="1.0"?>
+<!--
+  Copyright 2002-2004 The Apache Software Foundation
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+-->
+
+<!DOCTYPE document PUBLIC "-//APACHE//DTD Documentation V2.0//EN"
+          "http://forrest.apache.org/dtd/document-v20.dtd">
+
+
+<document>
+
+  <header>
+    <title>
+      Hadoop DFS Name Space Quotas Administrator Guide
+    </title>
+  </header>
+
+  <body>
+      <p>
+      HDFS allows the administrator to set quotas on individual directories. 
+      Newly created directories have no associated quota. 
+      The largest quota is Long.Max_Value. A quota of one forces a directory 
+      to remain empty.
+      </p>
+
+      <p>
+      The directory quota is a hard limit on the number of names in the tree 
+      rooted at that directory. File/directory creations fault if the quota 
+      would be exceeded. Quotas stick to renamed directories; the rename 
+      operation faults if operation would result in a quota violation. 
+      The attempt to set a quota faults if the directory would be in violation 
+      of the new quota.
+      </p>
+
+      <p>
+      Quotas are persistent with the fsimage. When starting, if the fsimage 
+      is immediately in violation of aquota (perhaps the fsimage was 
+      surreptitiously modified), startup operation fails with an error report. 
+      Setting/removing a quota creates a journal entry.
+      </p> 
+
+      <p>
+      The following new commands or new options are added to support quotas. 
+      The first two are administration commands.
+      </p>
+
+      <ul>
+      <li>
+      <strong><em>dfsadmin -setquota &lt;N> &lt;directory>...&lt;directory></em></strong> 
+      <br />
+      Set the quota <em></em> for each directory. Best effort for each directory,
+      with faults reported if <em>N</em> is not a positive long integer, 
+      the directory does not exist or it is a file, or the directory would 
+      immediately exceed the new quota.
+      </li>
+  
+      <li>
+      <strong><em>dfsadmin -clrquota &lt;directory>...&lt;director></em></strong><br /> 
+      Remove any quota for each directory. Best effort for each directory, 
+      with faults reported if the directory does not exist or it is a file. 
+      It is not a fault if the directory has no quota.
+      </li>
+  
+      <li>
+      <strong><em>fs -count -q &lt;directory>...&lt;directory></em></strong><br />
+      With the <em>-q</em> option, also report the quota value set for each 
+      directory, and the available quota remaining. If the directory does not have 
+      a quota set, the reported values are <em>none</em> and <em>inf</em>.
+      </li>
+      </ul>
+   </body>
+</document>

Modified: hadoop/core/trunk/src/docs/src/documentation/content/xdocs/site.xml
URL: http://svn.apache.org/viewvc/hadoop/core/trunk/src/docs/src/documentation/content/xdocs/site.xml?rev=664144&r1=664143&r2=664144&view=diff
==============================================================================
--- hadoop/core/trunk/src/docs/src/documentation/content/xdocs/site.xml (original)
+++ hadoop/core/trunk/src/docs/src/documentation/content/xdocs/site.xml Fri Jun  6 14:45:51 2008
@@ -38,6 +38,7 @@
     <hdfs      label="HDFS Architecture"  href="hdfs_design.html" />
     <hdfs      label="HDFS User Guide"    href="hdfs_user_guide.html" />
     <hdfs      label="HDFS Permissions Guide"    href="hdfs_permissions_guide.html" />
+    <hdfs      label="HDFS Quotas Administrator Guide" href="hdfs_quota_admin_guide.html" />
     <fs        label="FS Shell Guide"     href="hdfs_shell.html" />
     <mapred    label="Map-Reduce Tutorial" href="mapred_tutorial.html" />
     <mapred    label="Native Hadoop Libraries" href="native_libraries.html" />



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