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From omal...@apache.org
Subject svn commit: r808948 - /hadoop/common/branches/branch-0.20/src/docs/releasenotes.html
Date Fri, 28 Aug 2009 16:38:19 GMT
Author: omalley
Date: Fri Aug 28 16:38:18 2009
New Revision: 808948

URL: http://svn.apache.org/viewvc?rev=808948&view=rev
Log:
Preparing for release 0.20.1

Modified:
    hadoop/common/branches/branch-0.20/src/docs/releasenotes.html

Modified: hadoop/common/branches/branch-0.20/src/docs/releasenotes.html
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-0.20/src/docs/releasenotes.html?rev=808948&r1=808947&r2=808948&view=diff
==============================================================================
--- hadoop/common/branches/branch-0.20/src/docs/releasenotes.html (original)
+++ hadoop/common/branches/branch-0.20/src/docs/releasenotes.html Fri Aug 28 16:38:18 2009
@@ -12,17 +12,21 @@
 <body>
 <h1>Hadoop 0.20.1 Release Notes</h1>
 		These release notes include new developer and user-facing incompatibilities, features,
and major improvements. The table below is sorted by Component.
-<h1>Common</h1>
 
-<h2>        Sub-task
-</h2>
+		<a name="changes"></a>
+<h2>Changes Since Hadoop 0.20.0</h2>
+
+<h3>Common</h3>
+
+<h4>        Sub-task
+</h4>
 <ul>
 <li>[<a href='https://issues.apache.org/jira/browse/HADOOP-6213'>HADOOP-6213</a>]
-         Remove commons dependency on commons-cli2
 </li>
 </ul>
     
-<h2>        Bug
-</h2>
+<h4>        Bug
+</h4>
 <ul>
 <li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4626'>HADOOP-4626</a>]
-         API link in forrest doc should point to the same version of hadoop.
 </li>
@@ -90,15 +94,15 @@
 </li>
 </ul>
     
-<h2>        Improvement
-</h2>
+<h4>        Improvement
+</h4>
 <ul>
 <li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5726'>HADOOP-5726</a>]
-         Remove pre-emption from the capacity scheduler code base
 </li>
 </ul>
     
-<h2>        New Feature
-</h2>
+<h4>        New Feature
+</h4>
 <ul>
 <li>[<a href='https://issues.apache.org/jira/browse/HADOOP-3315'>HADOOP-3315</a>]
-         New binary file format
 </li>
@@ -108,10 +112,10 @@
 </li>
 </ul>
 
-<h1>HDFS</h1>
+<h3>HDFS</h3>
 
-<h2>        Bug
-</h2>
+<h4>        Bug
+</h4>
 <ul>
   <li>[<a href='https://issues.apache.org/jira/browse/HDFS-26'>HDFS-26</a>]
-           HADOOP-5862 for version .20  (Namespace quota exceeded message unclear)
 </li>
@@ -129,8 +133,8 @@
 </li>
 </ul>
     
-<h2>        Improvement
-</h2>
+<h4>        Improvement
+</h4>
 <ul>
 <li>[<a href='https://issues.apache.org/jira/browse/HDFS-504'>HDFS-504</a>]
-         HDFS updates the modification time of a file when the file is closed.
 </li>
@@ -138,10 +142,10 @@
 </li>
 </ul>
                                 
-<h1>Map/Reduce</h1>
+<h3>Map/Reduce</h3>
 
-<h2>        Bug
-</h2>
+<h4>        Bug
+</h4>
 <ul>
 <li>[<a href='https://issues.apache.org/jira/browse/MAPREDUCE-2'>MAPREDUCE-2</a>]
-         ArrayOutOfIndex error in KeyFieldBasedPartitioner on empty key
 </li>
@@ -193,8 +197,8 @@
 </li>
 </ul>
     
-<h2>        Improvement
-</h2>
+<h4>        Improvement
+</h4>
 <ul>
 <li>[<a href='https://issues.apache.org/jira/browse/MAPREDUCE-465'>MAPREDUCE-465</a>]
-         Deprecate org.apache.hadoop.mapred.lib.MultithreadedMapRunner
 </li>
@@ -204,5 +208,137 @@
 </li>
 </ul>
 
+<h2>Changes Since Hadoop 0.19.1</h2>
+<table border="1">
+<tr bgcolor="#DDDDDD">
+<th align="left">Issue</th><th align="left">Component</th><th
align="left">Notes</th>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-3344">HADOOP-3344</a></td><td>build</td><td>Changed
build procedure for libhdfs to build correctly for different platforms. Build instructions
are in the Jira item.</td>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4253">HADOOP-4253</a></td><td>conf</td><td>Removed
 from class org.apache.hadoop.fs.RawLocalFileSystem deprecated methods public String getName(),
public void lock(Path p, boolean shared) and public void release(Path p).</td>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4454">HADOOP-4454</a></td><td>conf</td><td>Changed
processing of conf/slaves file to allow # to begin a comment.</td>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4631">HADOOP-4631</a></td><td>conf</td><td>Split
hadoop-default.xml into core-default.xml, hdfs-default.xml and mapreduce-default.xml.</td>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4035">HADOOP-4035</a></td><td>contrib/capacity-sched</td><td>Changed
capacity scheduler policy to take note of task memory requirements and task tracker memory
availability.</td>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4445">HADOOP-4445</a></td><td>contrib/capacity-sched</td><td>Changed
JobTracker UI to better present the number of active tasks.</td>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4576">HADOOP-4576</a></td><td>contrib/capacity-sched</td><td>Changed
capacity scheduler UI to better present number of running and pending tasks.</td>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4179">HADOOP-4179</a></td><td>contrib/chukwa</td><td>Introduced
Vaidya rule based performance diagnostic tool for Map/Reduce jobs.</td>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4827">HADOOP-4827</a></td><td>contrib/chukwa</td><td>Improved
framework for data aggregation in Chuckwa.</td>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4843">HADOOP-4843</a></td><td>contrib/chukwa</td><td>Introduced
Chuckwa collection of job history.</td>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-5030">HADOOP-5030</a></td><td>contrib/chukwa</td><td>Changed
RPM install location to the value specified by build.properties file.</td>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-5531">HADOOP-5531</a></td><td>contrib/chukwa</td><td>Disabled
Chukwa unit tests for 0.20 branch only.</td>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4789">HADOOP-4789</a></td><td>contrib/fair-share</td><td>Changed
fair scheduler to divide resources equally between pools, not jobs.</td>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4873">HADOOP-4873</a></td><td>contrib/fair-share</td><td>Changed
fair scheduler UI to display minMaps and minReduces variables.</td>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-3750">HADOOP-3750</a></td><td>dfs</td><td>Removed
deprecated method parseArgs from org.apache.hadoop.fs.FileSystem.</td>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4029">HADOOP-4029</a></td><td>dfs</td><td>Added
name node storage information to the dfshealth page, and moved data node information to a
separated page.</td>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4103">HADOOP-4103</a></td><td>dfs</td><td>Modified
dfsadmin -report to report under replicated blocks. blocks with corrupt replicas, and missing
blocks&quot;.</td>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4567">HADOOP-4567</a></td><td>dfs</td><td>Changed
GetFileBlockLocations to return topology information for nodes that host the block replicas.</td>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4572">HADOOP-4572</a></td><td>dfs</td><td>Moved
org.apache.hadoop.hdfs.{CreateEditsLog, NNThroughputBenchmark} to org.apache.hadoop.hdfs.server.namenode.</td>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4618">HADOOP-4618</a></td><td>dfs</td><td>Moved
HTTP server from FSNameSystem to NameNode. Removed FSNamesystem.getNameNodeInfoPort(). Replaced
FSNamesystem.getDFSNameNodeMachine() and FSNamesystem.getDFSNameNodePort() with new method
 FSNamesystem.getDFSNameNodeAddress(). Removed constructor NameNode(bindAddress, conf).</td>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4826">HADOOP-4826</a></td><td>dfs</td><td>Introduced
new dfsadmin command saveNamespace to command the name service to do an immediate save of
the file system image.</td>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4970">HADOOP-4970</a></td><td>dfs</td><td>Changed
trash facility to use absolute path of the deleted file.</td>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-5468">HADOOP-5468</a></td><td>documentation</td><td>Reformatted
HTML documentation for Hadoop to use submenus at the left column.</td>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-3497">HADOOP-3497</a></td><td>fs</td><td>Changed
the semantics of file globbing with a PathFilter (using the globStatus method of FileSystem).
Previously, the filtering was too restrictive, so that a glob of /*/* and a filter that only
accepts /a/b would not have matched /a/b. With this change /a/b does match. </td>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4234">HADOOP-4234</a></td><td>fs</td><td>Changed
KFS glue layer to allow applications to interface with multiple KFS metaservers.</td>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4422">HADOOP-4422</a></td><td>fs/s3</td><td>Modified
Hadoop file system to no longer create S3 buckets. Applications can create buckets for their
S3 file systems by other means, for example, using the JetS3t API.</td>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-3063">HADOOP-3063</a></td><td>io</td><td>Introduced
BloomMapFile subclass of MapFile that creates a Bloom filter from all keys.</td>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-1230">HADOOP-1230</a></td><td>mapred</td><td>Replaced
parameters with context obejcts in Mapper, Reducer, Partitioner, InputFormat, and OutputFormat
classes.</td>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-1650">HADOOP-1650</a></td><td>mapred</td><td>Upgraded
all core servers to use Jetty 6</td>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-3923">HADOOP-3923</a></td><td>mapred</td><td>Moved
class org.apache.hadoop.mapred.StatusHttpServer to org.apache.hadoop.http.HttpServer.</td>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-3986">HADOOP-3986</a></td><td>mapred</td><td>Removed
classes org.apache.hadoop.mapred.JobShell and org.apache.hadoop.mapred.TestJobShell. Removed
from JobClient methods static void  setCommandLineConfig(Configuration conf) and public static
Configuration getCommandLineConfig().</td>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4188">HADOOP-4188</a></td><td>mapred</td><td>Removed
Task's dependency on concrete file systems by taking list from FileSystem class. Added statistics
table to FileSystem class. Deprecated FileSystem method getStatistics(Class&lt;? extends
FileSystem&gt; cls).</td>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4210">HADOOP-4210</a></td><td>mapred</td><td>Changed
public class org.apache.hadoop.mapreduce.ID to be an abstract class. Removed from class org.apache.hadoop.mapreduce.ID
the methods  public static ID read(DataInput in) and public static ID forName(String str).</td>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4305">HADOOP-4305</a></td><td>mapred</td><td>Improved
TaskTracker blacklisting strategy to better exclude faulty tracker from executing tasks.</td>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4435">HADOOP-4435</a></td><td>mapred</td><td>Changed
JobTracker web status page to display the amount of heap memory in use. This changes the JobSubmissionProtocol.</td>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4565">HADOOP-4565</a></td><td>mapred</td><td>Improved
MultiFileInputFormat so that multiple blocks from the same node or same rack can be combined
into a single split.</td>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4749">HADOOP-4749</a></td><td>mapred</td><td>Added
a new counter REDUCE_INPUT_BYTES.</td>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4783">HADOOP-4783</a></td><td>mapred</td><td>Changed
history directory permissions to 750 and history file permissions to 740.</td>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-3422">HADOOP-3422</a></td><td>metrics</td><td>Changed
names of ganglia metrics to avoid conflicts and to better identify source function.</td>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4284">HADOOP-4284</a></td><td>security</td><td>Introduced
HttpServer method to support global filters.</td>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4575">HADOOP-4575</a></td><td>security</td><td>Introduced
independent HSFTP proxy server for authenticated access to clusters.</td>
+</tr>
+<tr>
+<td><a href="https://issues.apache.org:443/jira/browse/HADOOP-4661">HADOOP-4661</a></td><td>tools/distcp</td><td>Introduced
distch tool for parallel ch{mod, own, grp}.</td>
+</tr>
+</table>
 </body>
 </html>



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