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7ValueAggregatorJobBase (Hadoop 0.20.1 API)
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89<H2>
90<FONT SIZE="-1">
91org.apache.hadoop.mapred.lib.aggregate</FONT>
92<BR>
93Class ValueAggregatorJobBase&lt;K1 extends <A HREF="../../../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</A>,V1 extends <A HREF="../../../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</A>&gt;</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 "><B>org.apache.hadoop.mapred.lib.aggregate.ValueAggregatorJobBase&lt;K1,V1&gt;</B>
97</PRE>
98<DL>
99<DT><B>All Implemented Interfaces:</B> <DD><A HREF="http://java.sun.com/javase/6/docs/api/java/io/Closeable.html?is-external=true" title="class or interface in java.io">Closeable</A>, <A HREF="../../../../../../org/apache/hadoop/mapred/JobConfigurable.html" title="interface in org.apache.hadoop.mapred">JobConfigurable</A>, <A HREF="../../../../../../org/apache/hadoop/mapred/Mapper.html" title="interface in org.apache.hadoop.mapred">Mapper</A>&lt;K1,V1,<A HREF="../../../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</A>,<A HREF="../../../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</A>&gt;, <A HREF="../../../../../../org/apache/hadoop/mapred/Reducer.html" title="interface in org.apache.hadoop.mapred">Reducer</A>&lt;<A HREF="../../../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</A>,<A HREF="../../../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</A>,<A HREF="../../../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</A>,<A HREF="../../../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</A>&gt;</DD>
100</DL>
101<DL>
102<DT><B>Direct Known Subclasses:</B> <DD><A HREF="../../../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorCombiner.html" title="class in org.apache.hadoop.mapred.lib.aggregate">ValueAggregatorCombiner</A>, <A HREF="../../../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorMapper.html" title="class in org.apache.hadoop.mapred.lib.aggregate">ValueAggregatorMapper</A>, <A HREF="../../../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorReducer.html" title="class in org.apache.hadoop.mapred.lib.aggregate">ValueAggregatorReducer</A></DD>
103</DL>
104<HR>
105<DL>
106<DT><PRE>public abstract class <B>ValueAggregatorJobBase&lt;K1 extends <A HREF="../../../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</A>,V1 extends <A HREF="../../../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</A>&gt;</B><DT>extends <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A><DT>implements <A HREF="../../../../../../org/apache/hadoop/mapred/Mapper.html" title="interface in org.apache.hadoop.mapred">Mapper</A>&lt;K1,V1,<A HREF="../../../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</A>,<A HREF="../../../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</A>&gt;, <A HREF="../../../../../../org/apache/hadoop/mapred/Reducer.html" title="interface in org.apache.hadoop.mapred">Reducer</A>&lt;<A HREF="../../../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</A>,<A HREF="../../../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</A>,<A HREF="../../../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</A>,<A HREF="../../../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</A>&gt;</DL>
107</PRE>
108
109<P>
110This abstract class implements some common functionalities of the
111 the generic mapper, reducer and combiner classes of Aggregate.
112<P>
113
114<P>
115<HR>
116
117<P>
118<!-- =========== FIELD SUMMARY =========== -->
119
120<A NAME="field_summary"><!-- --></A>
121<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
122<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
123<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
124<B>Field Summary</B></FONT></TH>
125</TR>
126<TR BGCOLOR="white" CLASS="TableRowColor">
127<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
128<CODE>protected &nbsp;<A HREF="http://java.sun.com/javase/6/docs/api/java/util/ArrayList.html?is-external=true" title="class or interface in java.util">ArrayList</A>&lt;<A HREF="../../../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorDescriptor.html" title="interface in org.apache.hadoop.mapred.lib.aggregate">ValueAggregatorDescriptor</A>&gt;</CODE></FONT></TD>
129<TD><CODE><B><A HREF="../../../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorJobBase.html#aggregatorDescriptorList">aggregatorDescriptorList</A></B></CODE>
130
131<BR>
132&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
133</TR>
134</TABLE>
135&nbsp;
136<!-- ======== CONSTRUCTOR SUMMARY ======== -->
137
138<A NAME="constructor_summary"><!-- --></A>
139<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
140<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
141<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
142<B>Constructor Summary</B></FONT></TH>
143</TR>
144<TR BGCOLOR="white" CLASS="TableRowColor">
145<TD><CODE><B><A HREF="../../../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorJobBase.html#ValueAggregatorJobBase()">ValueAggregatorJobBase</A></B>()</CODE>
146
147<BR>
148&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
149</TR>
150</TABLE>
151&nbsp;
152<!-- ========== METHOD SUMMARY =========== -->
153
154<A NAME="method_summary"><!-- --></A>
155<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
156<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
157<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
158<B>Method Summary</B></FONT></TH>
159</TR>
160<TR BGCOLOR="white" CLASS="TableRowColor">
161<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
162<CODE>&nbsp;void</CODE></FONT></TD>
163<TD><CODE><B><A HREF="../../../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorJobBase.html#close()">close</A></B>()</CODE>
164
165<BR>
166&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
167</TR>
168<TR BGCOLOR="white" CLASS="TableRowColor">
169<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
170<CODE>&nbsp;void</CODE></FONT></TD>
171<TD><CODE><B><A HREF="../../../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorJobBase.html#configure(org.apache.hadoop.mapred.JobConf)">configure</A></B>(<A HREF="../../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</A>&nbsp;job)</CODE>
172
173<BR>
174&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Initializes a new instance from a <A HREF="../../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred"><CODE>JobConf</CODE></A>.</TD>
175</TR>
176<TR BGCOLOR="white" CLASS="TableRowColor">
177<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
178<CODE>protected &nbsp;void</CODE></FONT></TD>
179<TD><CODE><B><A HREF="../../../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorJobBase.html#logSpec()">logSpec</A></B>()</CODE>
180
181<BR>
182&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
183</TR>
184</TABLE>
185&nbsp;<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
186<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
187<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
188<TH ALIGN="left"><B>Methods inherited from class java.lang.<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></B></TH>
189</TR>
190<TR BGCOLOR="white" CLASS="TableRowColor">
191<TD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD>
192</TR>
193</TABLE>
194&nbsp;<A NAME="methods_inherited_from_class_org.apache.hadoop.mapred.Mapper"><!-- --></A>
195<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
196<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
197<TH ALIGN="left"><B>Methods inherited from interface org.apache.hadoop.mapred.<A HREF="../../../../../../org/apache/hadoop/mapred/Mapper.html" title="interface in org.apache.hadoop.mapred">Mapper</A></B></TH>
198</TR>
199<TR BGCOLOR="white" CLASS="TableRowColor">
200<TD><CODE><A HREF="../../../../../../org/apache/hadoop/mapred/Mapper.html#map(K1, V1, org.apache.hadoop.mapred.OutputCollector, org.apache.hadoop.mapred.Reporter)">map</A></CODE></TD>
201</TR>
202</TABLE>
203&nbsp;<A NAME="methods_inherited_from_class_org.apache.hadoop.mapred.Reducer"><!-- --></A>
204<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
205<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
206<TH ALIGN="left"><B>Methods inherited from interface org.apache.hadoop.mapred.<A HREF="../../../../../../org/apache/hadoop/mapred/Reducer.html" title="interface in org.apache.hadoop.mapred">Reducer</A></B></TH>
207</TR>
208<TR BGCOLOR="white" CLASS="TableRowColor">
209<TD><CODE><A HREF="../../../../../../org/apache/hadoop/mapred/Reducer.html#reduce(K2, java.util.Iterator, org.apache.hadoop.mapred.OutputCollector, org.apache.hadoop.mapred.Reporter)">reduce</A></CODE></TD>
210</TR>
211</TABLE>
212&nbsp;
213<P>
214
215<!-- ============ FIELD DETAIL =========== -->
216
217<A NAME="field_detail"><!-- --></A>
218<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
219<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
220<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
221<B>Field Detail</B></FONT></TH>
222</TR>
223</TABLE>
224
225<A NAME="aggregatorDescriptorList"><!-- --></A><H3>
226aggregatorDescriptorList</H3>
227<PRE>
228protected <A HREF="http://java.sun.com/javase/6/docs/api/java/util/ArrayList.html?is-external=true" title="class or interface in java.util">ArrayList</A>&lt;<A HREF="../../../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorDescriptor.html" title="interface in org.apache.hadoop.mapred.lib.aggregate">ValueAggregatorDescriptor</A>&gt; <B>aggregatorDescriptorList</B></PRE>
229<DL>
230<DL>
231</DL>
232</DL>
233
234<!-- ========= CONSTRUCTOR DETAIL ======== -->
235
236<A NAME="constructor_detail"><!-- --></A>
237<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
238<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
239<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
240<B>Constructor Detail</B></FONT></TH>
241</TR>
242</TABLE>
243
244<A NAME="ValueAggregatorJobBase()"><!-- --></A><H3>
245ValueAggregatorJobBase</H3>
246<PRE>
247public <B>ValueAggregatorJobBase</B>()</PRE>
248<DL>
249</DL>
250
251<!-- ============ METHOD DETAIL ========== -->
252
253<A NAME="method_detail"><!-- --></A>
254<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
255<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
256<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
257<B>Method Detail</B></FONT></TH>
258</TR>
259</TABLE>
260
261<A NAME="configure(org.apache.hadoop.mapred.JobConf)"><!-- --></A><H3>
262configure</H3>
263<PRE>
264public void <B>configure</B>(<A HREF="../../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</A>&nbsp;job)</PRE>
265<DL>
266<DD><B>Description copied from interface: <CODE><A HREF="../../../../../../org/apache/hadoop/mapred/JobConfigurable.html#configure(org.apache.hadoop.mapred.JobConf)">JobConfigurable</A></CODE></B></DD>
267<DD>Initializes a new instance from a <A HREF="../../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred"><CODE>JobConf</CODE></A>.
268<P>
269<DD><DL>
270<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../../org/apache/hadoop/mapred/JobConfigurable.html#configure(org.apache.hadoop.mapred.JobConf)">configure</A></CODE> in interface <CODE><A HREF="../../../../../../org/apache/hadoop/mapred/JobConfigurable.html" title="interface in org.apache.hadoop.mapred">JobConfigurable</A></CODE></DL>
271</DD>
272<DD><DL>
273<DT><B>Parameters:</B><DD><CODE>job</CODE> - the configuration</DL>
274</DD>
275</DL>
276<HR>
277
278<A NAME="logSpec()"><!-- --></A><H3>
279logSpec</H3>
280<PRE>
281protected void <B>logSpec</B>()</PRE>
282<DL>
283<DD><DL>
284</DL>
285</DD>
286<DD><DL>
287</DL>
288</DD>
289</DL>
290<HR>
291
292<A NAME="close()"><!-- --></A><H3>
293close</H3>
294<PRE>
295public void <B>close</B>()
296           throws <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE>
297<DL>
298<DD><DL>
299<DT><B>Specified by:</B><DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/Closeable.html?is-external=true#close()" title="class or interface in java.io">close</A></CODE> in interface <CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/Closeable.html?is-external=true" title="class or interface in java.io">Closeable</A></CODE></DL>
300</DD>
301<DD><DL>
302
303<DT><B>Throws:</B>
304<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE></DL>
305</DD>
306</DL>
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319  <TR ALIGN="center" VALIGN="top">
320  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../../../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A>&nbsp;</TD>
321  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A>&nbsp;</TD>
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