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".</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<? extends FileSystem> 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>
