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7TeraValidate (Hadoop 0.20.1 API)
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91org.apache.hadoop.examples.terasort</FONT>
92<BR>
93Class TeraValidate</H2>
94<PRE>
95<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</A>
96  <IMG SRC="../../../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../../../org/apache/hadoop/conf/Configured.html" title="class in org.apache.hadoop.conf">org.apache.hadoop.conf.Configured</A>
97      <IMG SRC="../../../../../resources/inherit.gif" ALT="extended by "><B>org.apache.hadoop.examples.terasort.TeraValidate</B>
98</PRE>
99<DL>
100<DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../../org/apache/hadoop/conf/Configurable.html" title="interface in org.apache.hadoop.conf">Configurable</A>, <A HREF="../../../../../org/apache/hadoop/util/Tool.html" title="interface in org.apache.hadoop.util">Tool</A></DD>
101</DL>
102<HR>
103<DL>
104<DT><PRE>public class <B>TeraValidate</B><DT>extends <A HREF="../../../../../org/apache/hadoop/conf/Configured.html" title="class in org.apache.hadoop.conf">Configured</A><DT>implements <A HREF="../../../../../org/apache/hadoop/util/Tool.html" title="interface in org.apache.hadoop.util">Tool</A></DL>
105</PRE>
106
107<P>
108Generate 1 mapper per a file that checks to make sure the keys
109 are sorted within each file. The mapper also generates
110 "$file:begin", first key and "$file:end", last key. The reduce verifies that
111 all of the start/end items are in order.
112 Any output from the reduce is problem report.
113 <p>
114 To run the program:
115 <b>bin/hadoop jar hadoop-*-examples.jar teravalidate out-dir report-dir</b>
116 <p>
117 If there is any output, something is wrong and the output of the reduce
118 will have the problem report.
119<P>
120
121<P>
122<HR>
123
124<P>
125
126<!-- ======== CONSTRUCTOR SUMMARY ======== -->
127
128<A NAME="constructor_summary"><!-- --></A>
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130<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
131<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
132<B>Constructor Summary</B></FONT></TH>
133</TR>
134<TR BGCOLOR="white" CLASS="TableRowColor">
135<TD><CODE><B><A HREF="../../../../../org/apache/hadoop/examples/terasort/TeraValidate.html#TeraValidate()">TeraValidate</A></B>()</CODE>
136
137<BR>
138&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
139</TR>
140</TABLE>
141&nbsp;
142<!-- ========== METHOD SUMMARY =========== -->
143
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148<B>Method Summary</B></FONT></TH>
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151<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
152<CODE>static&nbsp;void</CODE></FONT></TD>
153<TD><CODE><B><A HREF="../../../../../org/apache/hadoop/examples/terasort/TeraValidate.html#main(java.lang.String[])">main</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>[]&nbsp;args)</CODE>
154
155<BR>
156&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
157</TR>
158<TR BGCOLOR="white" CLASS="TableRowColor">
159<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
160<CODE>&nbsp;int</CODE></FONT></TD>
161<TD><CODE><B><A HREF="../../../../../org/apache/hadoop/examples/terasort/TeraValidate.html#run(java.lang.String[])">run</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>[]&nbsp;args)</CODE>
162
163<BR>
164&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Execute the command with the given arguments.</TD>
165</TR>
166</TABLE>
167&nbsp;<A NAME="methods_inherited_from_class_org.apache.hadoop.conf.Configured"><!-- --></A>
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170<TH ALIGN="left"><B>Methods inherited from class org.apache.hadoop.conf.<A HREF="../../../../../org/apache/hadoop/conf/Configured.html" title="class in org.apache.hadoop.conf">Configured</A></B></TH>
171</TR>
172<TR BGCOLOR="white" CLASS="TableRowColor">
173<TD><CODE><A HREF="../../../../../org/apache/hadoop/conf/Configured.html#getConf()">getConf</A>, <A HREF="../../../../../org/apache/hadoop/conf/Configured.html#setConf(org.apache.hadoop.conf.Configuration)">setConf</A></CODE></TD>
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189</TR>
190<TR BGCOLOR="white" CLASS="TableRowColor">
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192</TR>
193</TABLE>
194&nbsp;
195<P>
196
197<!-- ========= CONSTRUCTOR DETAIL ======== -->
198
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202<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
203<B>Constructor Detail</B></FONT></TH>
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205</TABLE>
206
207<A NAME="TeraValidate()"><!-- --></A><H3>
208TeraValidate</H3>
209<PRE>
210public <B>TeraValidate</B>()</PRE>
211<DL>
212</DL>
213
214<!-- ============ METHOD DETAIL ========== -->
215
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220<B>Method Detail</B></FONT></TH>
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223
224<A NAME="run(java.lang.String[])"><!-- --></A><H3>
225run</H3>
226<PRE>
227public int <B>run</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>[]&nbsp;args)
228        throws <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</A></PRE>
229<DL>
230<DD><B>Description copied from interface: <CODE><A HREF="../../../../../org/apache/hadoop/util/Tool.html#run(java.lang.String[])">Tool</A></CODE></B></DD>
231<DD>Execute the command with the given arguments.
232<P>
233<DD><DL>
234<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../org/apache/hadoop/util/Tool.html#run(java.lang.String[])">run</A></CODE> in interface <CODE><A HREF="../../../../../org/apache/hadoop/util/Tool.html" title="interface in org.apache.hadoop.util">Tool</A></CODE></DL>
235</DD>
236<DD><DL>
237<DT><B>Parameters:</B><DD><CODE>args</CODE> - command specific arguments.
238<DT><B>Returns:</B><DD>exit code.
239<DT><B>Throws:</B>
240<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</A></CODE></DL>
241</DD>
242</DL>
243<HR>
244
245<A NAME="main(java.lang.String[])"><!-- --></A><H3>
246main</H3>
247<PRE>
248public static void <B>main</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>[]&nbsp;args)
249                 throws <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</A></PRE>
250<DL>
251<DD><DL>
252</DL>
253</DD>
254<DD><DL>
255<DT><B>Parameters:</B><DD><CODE>args</CODE> -
256<DT><B>Throws:</B>
257<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</A></CODE></DL>
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