| 143 | | {{{ |
| 144 | | #!html |
| 145 | | <html lang="zh-tw"><head> |
| 146 | | |
| 147 | | <meta content="text/html; charset=ISO-8859-1" http-equiv="content-type"><title>a.html</title> |
| 148 | | |
| 149 | | </head><body> |
| 150 | | <br> |
| 151 | | |
| 152 | | <p> |
| 153 | | </p><table summary="" border="1" cellpadding="3" cellspacing="0" width="100%"> |
| 154 | | <tbody><tr class="TableHeadingColor" bgcolor="#ccccff"> |
| 155 | | <th colspan="2" align="left"><font size="+2"> |
| 156 | | <b>Class Summary</b></font></th> |
| 157 | | </tr> |
| 158 | | <tr class="TableRowColor" bgcolor="white"> |
| 159 | | |
| 160 | | <td width="15%"><b><a href="http://hadoop.apache.org/core/docs/current/api/org/apache/hadoop/examples/AggregateWordCount.html" title="class in org.apache.hadoop.examples">AggregateWordCount</a></b></td> |
| 161 | | <td>This is an example Aggregated Hadoop Map/Reduce application. It |
| 162 | | reads the text input files, breaks each line into words and counts |
| 163 | | them. The output is a locally sorted list of words and the count of how |
| 164 | | often they occurred. To run: bin/hadoop jar hadoop-*-examples.jar |
| 165 | | aggregatewordcount in-dir out-dir numOfReducers textinputformat </td> |
| 166 | | </tr> |
| 167 | | <tr class="TableRowColor" bgcolor="white"> |
| 168 | | <td width="15%"><b><a href="http://hadoop.apache.org/core/docs/current/api/org/apache/hadoop/examples/AggregateWordHistogram.html" title="class in org.apache.hadoop.examples">AggregateWordHistogram</a></b></td> |
| 169 | | <td>This is an example Aggregated Hadoop Map/Reduce application. |
| 170 | | Computes the histogram of the words in the input texts. To run: |
| 171 | | bin/hadoop jar hadoop-*-examples.jar aggregatewordhist in-dir out-dir |
| 172 | | numOfReducers textinputformat </td> |
| 173 | | </tr> |
| 174 | | <tr class="TableRowColor" bgcolor="white"> |
| 175 | | <td width="15%"><b><a href="http://hadoop.apache.org/core/docs/current/api/org/apache/hadoop/examples/ExampleDriver.html" title="class in org.apache.hadoop.examples">ExampleDriver</a></b></td> |
| 176 | | <td>A description of an example program based on its class and a human-readable description.</td> |
| 177 | | </tr> |
| 178 | | |
| 179 | | <tr class="TableRowColor" bgcolor="white"> |
| 180 | | <td width="15%"><b><a href="http://hadoop.apache.org/core/docs/current/api/org/apache/hadoop/examples/Grep.html" title="class in org.apache.hadoop.examples">Grep</a></b></td> |
| 181 | | <td> </td> |
| 182 | | </tr> |
| 183 | | <tr class="TableRowColor" bgcolor="white"> |
| 184 | | <td width="15%"><b><a href="http://hadoop.apache.org/core/docs/current/api/org/apache/hadoop/examples/Join.html" title="class in org.apache.hadoop.examples">Join</a></b></td> |
| 185 | | <td>This is the trivial map/reduce program that does absolutely nothing |
| 186 | | other than use the framework to fragment and sort the input values. To |
| 187 | | run: bin/hadoop jar build/hadoop-examples.jar join [-m maps] [-r |
| 188 | | reduces] [-inFormat input format class] [-outFormat output format |
| 189 | | class] [-outKey output key class] [-outValue output value class] |
| 190 | | [-joinOp] [in-dir]* in-dir out-dir</inner></td> |
| 191 | | </tr> |
| 192 | | <tr class="TableRowColor" bgcolor="white"> |
| 193 | | <td width="15%"><b><a href="http://hadoop.apache.org/core/docs/current/api/org/apache/hadoop/examples/RandomTextWriter.html" title="class in org.apache.hadoop.examples">RandomTextWriter</a></b></td> |
| 194 | | <td>This program uses map/reduce to just run a distributed job where |
| 195 | | there is |
| 196 | | no interaction between the tasks and each task writes a large unsorted |
| 197 | | random sequence of words.To run: bin/hadoop jar |
| 198 | | hadoop-${version}-examples.jar randomtextwriter [-outFormat output |
| 199 | | format class] output</td> |
| 200 | | |
| 201 | | </tr> |
| 202 | | <tr class="TableRowColor" bgcolor="white"> |
| 203 | | <td width="15%"><b><a href="http://hadoop.apache.org/core/docs/current/api/org/apache/hadoop/examples/RandomWriter.html" title="class in org.apache.hadoop.examples">RandomWriter</a></b></td> |
| 204 | | <td>This program uses map/reduce to just run a distributed job where |
| 205 | | there is |
| 206 | | no interaction between the tasks and each task write a large unsorted |
| 207 | | random binary sequence file of BytesWritable.To run: bin/hadoop jar |
| 208 | | hadoop-${version}-examples.jar randomwriter [-outFormat output format |
| 209 | | class] output</td> |
| 210 | | </tr> |
| 211 | | <tr class="TableRowColor" bgcolor="white"> |
| 212 | | <td width="15%"><b><a href="http://hadoop.apache.org/core/docs/current/api/org/apache/hadoop/examples/Sort.html" title="class in org.apache.hadoop.examples">Sort<K,V></a></b></td> |
| 213 | | <td>This is the trivial map/reduce program that does absolutely nothing |
| 214 | | other than use the framework to fragment and sort the input values.To |
| 215 | | run: bin/hadoop jar build/hadoop-examples.jar sort [-m maps] [-r |
| 216 | | reduces] [-inFormat input format class] [-outFormat output format |
| 217 | | class] [-outKey output key class] [-outValue output value class] |
| 218 | | [-totalOrder pcnt num samples max splits] in-dir out-dir</td> |
| 219 | | </tr> |
| 220 | | <tr class="TableRowColor" bgcolor="white"> |
| 221 | | <td width="15%"><b><a href="http://hadoop.apache.org/core/docs/current/api/org/apache/hadoop/examples/WordCount.html" title="class in org.apache.hadoop.examples">WordCount</a></b></td> |
| 222 | | |
| 223 | | <td>This is an example Hadoop Map/Reduce application.</td> |
| 224 | | </tr> |
| 225 | | </tbody></table> |
| 226 | | </body></html> |
| 227 | | }}} |
| 228 | | |
