You are viewing a plain text version of this content. The canonical link for it is here.
Posted to common-commits@hadoop.apache.org by sz...@apache.org on 2008/12/02 20:23:35 UTC
svn commit: r722582 [2/2] - in /hadoop/core/trunk: ./ conf/ docs/
docs/jdiff/ src/docs/src/documentation/content/xdocs/
src/mapred/org/apache/hadoop/mapred/
Modified: hadoop/core/trunk/docs/mapred_tutorial.pdf
URL: http://svn.apache.org/viewvc/hadoop/core/trunk/docs/mapred_tutorial.pdf?rev=722582&r1=722581&r2=722582&view=diff
==============================================================================
--- hadoop/core/trunk/docs/mapred_tutorial.pdf (original)
+++ hadoop/core/trunk/docs/mapred_tutorial.pdf Tue Dec 2 11:23:34 2008
@@ -1855,10 +1855,10 @@
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%%EOF
Modified: hadoop/core/trunk/docs/native_libraries.html
URL: http://svn.apache.org/viewvc/hadoop/core/trunk/docs/native_libraries.html?rev=722582&r1=722581&r2=722582&view=diff
==============================================================================
--- hadoop/core/trunk/docs/native_libraries.html (original)
+++ hadoop/core/trunk/docs/native_libraries.html Tue Dec 2 11:23:34 2008
@@ -150,6 +150,9 @@
<a href="SLG_user_guide.html">HDFS Utilities</a>
</div>
<div class="menuitem">
+<a href="libhdfs.html">HDFS C API</a>
+</div>
+<div class="menuitem">
<a href="hod_user_guide.html">HOD User 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=722582&r1=722581&r2=722582&view=diff
==============================================================================
--- hadoop/core/trunk/docs/quickstart.html (original)
+++ hadoop/core/trunk/docs/quickstart.html Tue Dec 2 11:23:34 2008
@@ -150,6 +150,9 @@
<a href="SLG_user_guide.html">HDFS Utilities</a>
</div>
<div class="menuitem">
+<a href="libhdfs.html">HDFS C API</a>
+</div>
+<div class="menuitem">
<a href="hod_user_guide.html">HOD User 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=722582&r1=722581&r2=722582&view=diff
==============================================================================
--- hadoop/core/trunk/docs/streaming.html (original)
+++ hadoop/core/trunk/docs/streaming.html Tue Dec 2 11:23:34 2008
@@ -153,6 +153,9 @@
<a href="SLG_user_guide.html">HDFS Utilities</a>
</div>
<div class="menuitem">
+<a href="libhdfs.html">HDFS C API</a>
+</div>
+<div class="menuitem">
<a href="hod_user_guide.html">HOD User Guide</a>
</div>
<div class="menuitem">
@@ -322,11 +325,11 @@
</p>
<p>
When an executable is specified for mappers, each mapper task will launch the executable as a separate process when the mapper is initialized. As the mapper task runs, it converts its inputs into lines and feed the lines to the stdin of the process. In the meantime, the mapper collects the line oriented outputs from the stdout of the process and converts each line into a key/value pair, which is collected as the output of the mapper. By default, the
- <em>prefix of a line up to the first tab character</em> is the <strong>key</strong> and the the rest of the line (excluding the tab character) will be the <strong>value</strong>.
+ <em>prefix of a line up to the first tab character</em> is the <strong>key</strong> and the rest of the line (excluding the tab character) will be the <strong>value</strong>.
If there is no tab character in the line, then entire line is considered as key and the value is null. However, this can be customized, as discussed later.
</p>
<p>
-When an executable is specified for reducers, each reducer task will launch the executable as a separate process then the reducer is initialized. As the reducer task runs, it converts its input key/values pairs into lines and feeds the lines to the stdin of the process. In the meantime, the reducer collects the line oriented outputs from the stdout of the process, converts each line into a key/value pair, which is collected as the output of the reducer. By default, the prefix of a line up to the first tab character is the key and the the rest of the line (excluding the tab character) is the value. However, this can be customized, as discussed later.
+When an executable is specified for reducers, each reducer task will launch the executable as a separate process then the reducer is initialized. As the reducer task runs, it converts its input key/values pairs into lines and feeds the lines to the stdin of the process. In the meantime, the reducer collects the line oriented outputs from the stdout of the process, converts each line into a key/value pair, which is collected as the output of the reducer. By default, the prefix of a line up to the first tab character is the key and the rest of the line (excluding the tab character) is the value. However, this can be customized, as discussed later.
</p>
<p>
This is the basis for the communication protocol between the Map/Reduce framework and the streaming mapper/reducer.
@@ -604,7 +607,7 @@
<a name="N101C3"></a><a name="Customizing+the+Way+to+Split+Lines+into+Key%2FValue+Pairs"></a>
<h3 class="h4">Customizing the Way to Split Lines into Key/Value Pairs </h3>
<p>
-As noted earlier, when the Map/Reduce framework reads a line from the stdout of the mapper, it splits the line into a key/value pair. By default, the prefix of the line up to the first tab character is the key and the the rest of the line (excluding the tab character) is the value.
+As noted earlier, when the Map/Reduce framework reads a line from the stdout of the mapper, it splits the line into a key/value pair. By default, the prefix of the line up to the first tab character is the key and the rest of the line (excluding the tab character) is the value.
</p>
<p>
However, you can customize this default. You can specify a field separator other than the tab character (the default), and you can specify the nth (n >= 1) character rather than the first character in a line (the default) as the separator between the key and value. For example:
Modified: hadoop/core/trunk/docs/streaming.pdf
URL: http://svn.apache.org/viewvc/hadoop/core/trunk/docs/streaming.pdf?rev=722582&r1=722581&r2=722582&view=diff
==============================================================================
--- hadoop/core/trunk/docs/streaming.pdf (original)
+++ hadoop/core/trunk/docs/streaming.pdf Tue Dec 2 11:23:34 2008
@@ -386,10 +386,10 @@
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trailer
<<
/Size 144
@@ -1299,5 +1299,5 @@
/Info 4 0 R
>>
startxref
-52848
+52837
%%EOF
Modified: hadoop/core/trunk/src/docs/src/documentation/content/xdocs/cluster_setup.xml
URL: http://svn.apache.org/viewvc/hadoop/core/trunk/src/docs/src/documentation/content/xdocs/cluster_setup.xml?rev=722582&r1=722581&r2=722582&view=diff
==============================================================================
--- hadoop/core/trunk/src/docs/src/documentation/content/xdocs/cluster_setup.xml (original)
+++ hadoop/core/trunk/src/docs/src/documentation/content/xdocs/cluster_setup.xml Tue Dec 2 11:23:34 2008
@@ -99,7 +99,7 @@
<section>
<title>Site Configuration</title>
- <p>To configure the the Hadoop cluster you will need to configure the
+ <p>To configure the Hadoop cluster you will need to configure the
<em>environment</em> in which the Hadoop daemons execute as well as
the <em>configuration parameters</em> for the Hadoop daemons.</p>
Modified: hadoop/core/trunk/src/docs/src/documentation/content/xdocs/hdfs_permissions_guide.xml
URL: http://svn.apache.org/viewvc/hadoop/core/trunk/src/docs/src/documentation/content/xdocs/hdfs_permissions_guide.xml?rev=722582&r1=722581&r2=722582&view=diff
==============================================================================
--- hadoop/core/trunk/src/docs/src/documentation/content/xdocs/hdfs_permissions_guide.xml (original)
+++ hadoop/core/trunk/src/docs/src/documentation/content/xdocs/hdfs_permissions_guide.xml Tue Dec 2 11:23:34 2008
@@ -43,12 +43,12 @@
Else if the group of <code>foo</code> matches any of member of the groups list, then the group permissions are tested;
</li>
<li>
- Otherwise the the other permissions of <code>foo</code> are tested.
+ Otherwise the other permissions of <code>foo</code> are tested.
</li>
</ul>
<p>
- If a permissions check fails, the the client operation fails.
+ If a permissions check fails, the client operation fails.
</p>
</section>
Modified: hadoop/core/trunk/src/docs/src/documentation/content/xdocs/mapred_tutorial.xml
URL: http://svn.apache.org/viewvc/hadoop/core/trunk/src/docs/src/documentation/content/xdocs/mapred_tutorial.xml?rev=722582&r1=722581&r2=722582&view=diff
==============================================================================
--- hadoop/core/trunk/src/docs/src/documentation/content/xdocs/mapred_tutorial.xml (original)
+++ hadoop/core/trunk/src/docs/src/documentation/content/xdocs/mapred_tutorial.xml Tue Dec 2 11:23:34 2008
@@ -1871,7 +1871,7 @@
<a href="ext:api/org/apache/hadoop/mapred/jobconf/setprofileenabled">
JobConf.setProfileEnabled(boolean)</a>. If the value is set
<code>true</code>, the task profiling is enabled. The profiler
- information is stored in the the user log directory. By default,
+ information is stored in the user log directory. By default,
profiling is not enabled for the job. </p>
<p>Once user configures that profiling is needed, she/he can use
Modified: hadoop/core/trunk/src/docs/src/documentation/content/xdocs/streaming.xml
URL: http://svn.apache.org/viewvc/hadoop/core/trunk/src/docs/src/documentation/content/xdocs/streaming.xml?rev=722582&r1=722581&r2=722582&view=diff
==============================================================================
--- hadoop/core/trunk/src/docs/src/documentation/content/xdocs/streaming.xml (original)
+++ hadoop/core/trunk/src/docs/src/documentation/content/xdocs/streaming.xml Tue Dec 2 11:23:34 2008
@@ -48,11 +48,11 @@
In the above example, both the mapper and the reducer are executables that read the input from stdin (line by line) and emit the output to stdout. The utility will create a Map/Reduce job, submit the job to an appropriate cluster, and monitor the progress of the job until it completes.
</p><p>
When an executable is specified for mappers, each mapper task will launch the executable as a separate process when the mapper is initialized. As the mapper task runs, it converts its inputs into lines and feed the lines to the stdin of the process. In the meantime, the mapper collects the line oriented outputs from the stdout of the process and converts each line into a key/value pair, which is collected as the output of the mapper. By default, the
- <em>prefix of a line up to the first tab character</em> is the <strong>key</strong> and the the rest of the line (excluding the tab character) will be the <strong>value</strong>.
+ <em>prefix of a line up to the first tab character</em> is the <strong>key</strong> and the rest of the line (excluding the tab character) will be the <strong>value</strong>.
If there is no tab character in the line, then entire line is considered as key and the value is null. However, this can be customized, as discussed later.
</p>
<p>
-When an executable is specified for reducers, each reducer task will launch the executable as a separate process then the reducer is initialized. As the reducer task runs, it converts its input key/values pairs into lines and feeds the lines to the stdin of the process. In the meantime, the reducer collects the line oriented outputs from the stdout of the process, converts each line into a key/value pair, which is collected as the output of the reducer. By default, the prefix of a line up to the first tab character is the key and the the rest of the line (excluding the tab character) is the value. However, this can be customized, as discussed later.
+When an executable is specified for reducers, each reducer task will launch the executable as a separate process then the reducer is initialized. As the reducer task runs, it converts its input key/values pairs into lines and feeds the lines to the stdin of the process. In the meantime, the reducer collects the line oriented outputs from the stdout of the process, converts each line into a key/value pair, which is collected as the output of the reducer. By default, the prefix of a line up to the first tab character is the key and the rest of the line (excluding the tab character) is the value. However, this can be customized, as discussed later.
</p><p>
This is the basis for the communication protocol between the Map/Reduce framework and the streaming mapper/reducer.
</p><p>
@@ -292,7 +292,7 @@
<section>
<title>Customizing the Way to Split Lines into Key/Value Pairs </title>
<p>
-As noted earlier, when the Map/Reduce framework reads a line from the stdout of the mapper, it splits the line into a key/value pair. By default, the prefix of the line up to the first tab character is the key and the the rest of the line (excluding the tab character) is the value.
+As noted earlier, when the Map/Reduce framework reads a line from the stdout of the mapper, it splits the line into a key/value pair. By default, the prefix of the line up to the first tab character is the key and the rest of the line (excluding the tab character) is the value.
</p>
<p>
However, you can customize this default. You can specify a field separator other than the tab character (the default), and you can specify the nth (n >= 1) character rather than the first character in a line (the default) as the separator between the key and value. For example:
Modified: hadoop/core/trunk/src/mapred/org/apache/hadoop/mapred/ReduceTask.java
URL: http://svn.apache.org/viewvc/hadoop/core/trunk/src/mapred/org/apache/hadoop/mapred/ReduceTask.java?rev=722582&r1=722581&r2=722582&view=diff
==============================================================================
--- hadoop/core/trunk/src/mapred/org/apache/hadoop/mapred/ReduceTask.java (original)
+++ hadoop/core/trunk/src/mapred/org/apache/hadoop/mapred/ReduceTask.java Tue Dec 2 11:23:34 2008
@@ -2512,7 +2512,7 @@
//earlier when we invoked cloneFileAttributes
localFileSys.delete(outputPath, true);
throw (IOException)new IOException
- ("Intermedate merge failed").initCause(e);
+ ("Intermediate merge failed").initCause(e);
}
// Note the output of the merge