Author: omalley
Date: Thu Aug 27 23:22:28 2009
New Revision: 808676
URL: http://svn.apache.org/viewvc?rev=808676&view=rev
Log:
Preparing for release 0.20.1
Modified:
hadoop/common/branches/branch-0.20/CHANGES.txt
hadoop/common/branches/branch-0.20/build.xml
hadoop/common/branches/branch-0.20/src/docs/releasenotes.html
Modified: hadoop/common/branches/branch-0.20/CHANGES.txt
URL:
http://svn.apache.org/viewvc/hadoop/common/branches/branch-0.20/CHANGES.txt?rev=808676&r1=808675&r2=808676&view=diff
==============================================================================
--- hadoop/common/branches/branch-0.20/CHANGES.txt (original)
+++ hadoop/common/branches/branch-0.20/CHANGES.txt Thu Aug 27 23:22:28 2009
@@ -1,6 +1,6 @@
Hadoop Change Log
-Release 0.20.1 - Unreleased
+Release 0.20.1 - 2009-08-27
INCOMPATIBLE CHANGES
Modified: hadoop/common/branches/branch-0.20/build.xml
URL:
http://svn.apache.org/viewvc/hadoop/common/branches/branch-0.20/build.xml?rev=808676&r1=808675&r2=808676&view=diff
==============================================================================
--- hadoop/common/branches/branch-0.20/build.xml (original)
+++ hadoop/common/branches/branch-0.20/build.xml Thu Aug 27 23:22:28 2009
@@ -27,7 +27,7 @@
<property name="Name" value="Hadoop"/>
<property name="name" value="hadoop"/>
- <property name="version" value="0.20.1-dev"/>
+ <property name="version" value="0.20.2-dev"/>
<property name="final.name" value="${name}-${version}"/>
<property name="year" value="2009"/>
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=808676&r1=808675&r2=808676&view=diff
==============================================================================
--- hadoop/common/branches/branch-0.20/src/docs/releasenotes.html (original)
+++ hadoop/common/branches/branch-0.20/src/docs/releasenotes.html Thu Aug 27
23:22:28 2009
@@ -2,7 +2,7 @@
<html>
<head>
<META http-equiv="Content-Type" content="text/html; charset=UTF-8">
-<title>Hadoop 0.20.0 Release Notes</title>
+<title>Hadoop 0.20.1 Release Notes</title>
<STYLE type="text/css">
H1 {font-family: sans-serif}
H2 {font-family: sans-serif; margin-left: 7mm}
@@ -10,141 +10,199 @@
</STYLE>
</head>
<body>
-<h1>Hadoop 0.20.0 Release Notes</h1>
+<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.
-
- <a name="changes"></a>
-<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>
+<h1>Common</h1>
+
+<h2> Sub-task
+</h2>
+<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>
+<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>
+<li>[<a
href='https://issues.apache.org/jira/browse/HADOOP-4674'>HADOOP-4674</a>] -
hadoop fs -help should list detailed help info for the following commands:
test, text, tail, stat & touchz
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/HADOOP-4856'>HADOOP-4856</a>] -
Document JobInitializationPoller configuration in capacity scheduler
forrest documentation.
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/HADOOP-4931'>HADOOP-4931</a>] -
Document TaskTracker's memory management functionality and
CapacityScheduler's memory based scheduling.
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/HADOOP-5210'>HADOOP-5210</a>] -
Reduce Task Progress shows > 100% when the total size of map outputs
(for a single reducer) is high
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/HADOOP-5213'>HADOOP-5213</a>] -
BZip2CompressionOutputStream NullPointerException
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/HADOOP-5349'>HADOOP-5349</a>] -
When the size required for a path is -1,
LocalDirAllocator.getLocalPathForWrite fails with a DiskCheckerException when
the disk it selects is bad.
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/HADOOP-5533'>HADOOP-5533</a>] -
Recovery duration shown on the jobtracker webpage is inaccurate
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/HADOOP-5539'>HADOOP-5539</a>] -
o.a.h.mapred.Merger not maintaining map out compression on intermediate
files
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/HADOOP-5636'>HADOOP-5636</a>] -
Job is left in Running state after a killJob
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/HADOOP-5641'>HADOOP-5641</a>] -
Possible NPE in CapacityScheduler's MemoryMatcher
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/HADOOP-5646'>HADOOP-5646</a>] -
TestQueueCapacities is failing Hudson tests for the last few builds
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/HADOOP-5648'>HADOOP-5648</a>] -
Not able to generate gridmix.jar on already compiled version of hadoop
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/HADOOP-5654'>HADOOP-5654</a>] -
TestReplicationPolicy.<init> fails on java.net.BindException
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/HADOOP-5655'>HADOOP-5655</a>] -
TestMRServerPorts fails on java.net.BindException
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/HADOOP-5688'>HADOOP-5688</a>] -
HftpFileSystem.getChecksum(..) does not work for the paths with scheme and
authority
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/HADOOP-5691'>HADOOP-5691</a>] -
org.apache.hadoop.mapreduce.Reducer should not be abstract.
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/HADOOP-5711'>HADOOP-5711</a>] -
Change Namenode file close log to info
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/HADOOP-5718'>HADOOP-5718</a>] -
Capacity Scheduler should not check for presence of default queue while
starting up.
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/HADOOP-5719'>HADOOP-5719</a>] -
Jobs failed during job initalization are never removed from Capacity
Schedulers waiting list
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/HADOOP-5736'>HADOOP-5736</a>] -
Update CapacityScheduler documentation to reflect latest changes
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/HADOOP-5746'>HADOOP-5746</a>] -
Errors encountered in MROutputThread after the last map/reduce call can go
undetected
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/HADOOP-5796'>HADOOP-5796</a>] -
DFS Write pipeline does not detect defective datanode correctly in some
cases (HADOOP-3339)
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/HADOOP-5828'>HADOOP-5828</a>] -
Use absolute path for JobTracker's mapred.local.dir in MiniMRCluster
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/HADOOP-5850'>HADOOP-5850</a>] -
map/reduce doesn't run jobs with 0 maps
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/HADOOP-5863'>HADOOP-5863</a>] -
mapred metrics shows negative count of waiting maps and reduces
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/HADOOP-5869'>HADOOP-5869</a>] -
TestQueueCapacitisues.apache.org/jjira/browse/HADOOP-OP-6017</a>] -
NameNode and SecondaryNameNode fail to restart because of abnormal filenames.
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/HADOOP-6097'>HADOOP-6097</a>] -
Multiple bugs w/ Hadoop archives
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/HADOOP-6139'>HADOOP-6139</a>] -
Incomplete help message is displayed for rm and rmr options.
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/HADOOP-6141'>HADOOP-6141</a>] -
hadoop 0.20 branch "test-patch" is broken
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/HADOOP-6145'>HADOOP-6145</a>] -
No error message for deleting non-existant file or directory.
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/HADOOP-6215'>HADOOP-6215</a>] -
fix GenericOptionParser to deal with -D with '=' in the value
+</li>
+</ul>
+
+<h2> Improvement
+</h2>
+<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>
+<ul>
+<li>[<a
href='https://issues.apache.org/jira/browse/HADOOP-3315'>HADOOP-3315</a>] -
New binary file format
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/HADOOP-5714'>HADOOP-5714</a>] -
Metric to show number of fs.exists (or number of getFileInfo) calls
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/HADOOP-6080'>HADOOP-6080</a>] -
Handling of Trash with quota
+</li>
+</ul>
+
+<h1>HDFS</h1>
+
+<h2> Bug
+</h2>
+<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>
+<li>[<a href='https://issues.apache.org/jira/browse/HDFS-167'>HDFS-167</a>] -
DFSClient continues to retry indefinitely
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HDFS-438'>HDFS-438</a>] -
Improve help message for quotas
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HDFS-442'>HDFS-442</a>] -
dfsthroughput in test.jar throws NPE
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HDFS-485'>HDFS-485</a>] -
error : too many fetch failures
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HDFS-495'>HDFS-495</a>] -
Hadoop FSNamesystem startFileInternal() getLease() has bug
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HDFS-525'>HDFS-525</a>] -
ListPathsServlet.java uses static SimpleDateFormat that has threading
issues
+</li>
+</ul>
+
+<h2> Improvement
+</h2>
+<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>
+<li>[<a href='https://issues.apache.org/jira/browse/HDFS-527'>HDFS-527</a>] -
Refactor DFSClient constructors
+</li>
+</ul>
+
+<h1>Map/Reduce</h1>
+
+<h2> Bug
+</h2>
+<ul>
+<li>[<a
href='https://issues.apache.org/jira/browse/MAPREDUCE-2'>MAPREDUCE-2</a>] -
ArrayOutOfIndex error in KeyFieldBasedPartitioner on empty key
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/MAPREDUCE-18'>MAPREDUCE-18</a>] -
Under load the shuffle sometimes gets incorrect data
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/MAPREDUCE-40'>MAPREDUCE-40</a>] -
Memory management variables need a backwards compatibility option after
HADOOP-5881
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/MAPREDUCE-112'>MAPREDUCE-112</a>] -
Reduce Input Records and Reduce Output Records counters are not being
set when using the new Mapreduce reducer API
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/MAPREDUCE-124'>MAPREDUCE-124</a>] -
When abortTask of OutputCommitter fails with an Exception for a
map-only job, the task is marked as success
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/MAPREDUCE-130'>MAPREDUCE-130</a>] -
Delete the jobconf copy from the log directory of the JobTracker when
the job is retired
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/MAPREDUCE-179'>MAPREDUCE-179</a>] -
setProgress not called for new RecordReaders
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/MAPREDUCE-383'>MAPREDUCE-383</a>] -
pipes combiner does not reset properly after a spill
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/MAPREDUCE-421'>MAPREDUCE-421</a>] -
mapred pipes might return exit code 0 even when failing
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/MAPREDUCE-430'>MAPREDUCE-430</a>] -
Task stuck in cleanup with OutOfMemoryErrors
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/MAPREDUCE-565'>MAPREDUCE-565</a>] -
Partitioner does not work with new API
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/MAPREDUCE-657'>MAPREDUCE-657</a>] -
CompletedJobStatusStore hardcodes filesystem to hdfs
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/MAPREDUCE-735'>MAPREDUCE-735</a>] -
ArrayIndexOutOfBoundsException is thrown by KeyFieldBasedPartitioner
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/MAPREDUCE-745'>MAPREDUCE-745</a>] -
TestRecoveryManager fails sometimes
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/MAPREDUCE-796'>MAPREDUCE-796</a>] -
Encountered "ClassCastException" on tasktracker while running
wordcount with MultithreadedMapRunner
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/MAPREDUCE-805'>MAPREDUCE-805</a>] -
Deadlock in Jobtracker
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/MAPREDUCE-806'>MAPREDUCE-806</a>] -
WordCount example does not compile given the current instructions
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/MAPREDUCE-807'>MAPREDUCE-807</a>] -
Stray user files in mapred.system.dir with permissions other than 777
can prevent the jobtracker from starting up.
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/MAPREDUCE-818'>MAPREDUCE-818</a>] -
org.apache.hadoop.mapreduce.Counters.getGroup returns null if the group
name doesnt exist.
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/MAPREDUCE-827'>MAPREDUCE-827</a>] -
"hadoop job -status <jobid>" command should display
job's completion status also.
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/MAPREDUCE-832'>MAPREDUCE-832</a>] -
Too many WARN messages about deprecated memorty config variables in
JobTacker log
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/MAPREDUCE-834'>MAPREDUCE-834</a>] -
When TaskTracker config use old memory management values its memory
monitoring is diabled.
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/MAPREDUCE-838'>MAPREDUCE-838</a>] -
Task succeeds even when committer.commitTask fails with IOException
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/MAPREDUCE-911'>MAPREDUCE-911</a>] -
TestTaskFail fail sometimes
+</li>
+</ul>
+
+<h2> Improvement
+</h2>
+<ul>
+<li>[<a
href='https://issues.apache.org/jira/browse/MAPREDUCE-465'>MAPREDUCE-465</a>] -
Deprecate org.apache.hadoop.mapred.lib.MultithreadedMapRunner
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/MAPREDUCE-487'>MAPREDUCE-487</a>] -
DBInputFormat support for Oracle
+</li>
+<li>[<a
href='https://issues.apache.org/jira/browse/MAPREDUCE-767'>MAPREDUCE-767</a>] -
to remove mapreduce dependency on commons-cli2
+</li>
+</ul>
+
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