Changes between Version 4 and Version 5 of jazz/Hadoop_Lab2


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Timestamp:
Mar 24, 2009, 11:43:25 AM (15 years ago)
Author:
waue
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  • jazz/Hadoop_Lab2

    v4 v5  
    2424 === 2.3 更多運算命令 ===
    2525 
     26 可執行的指令一覽表：
     27 
     28 || aggregatewordcount: ||  An Aggregate based map/reduce program that counts the words in the input files. ||
     29
     30 ||  aggregatewordhist:  || An Aggregate based map/reduce program that computes the histogram of the words in the input files. ||
     31
     32 || grep: ||  A map/reduce program that counts the matches of a regex in the input. ||
     33
     34 ||  join:  || A job that effects a join over sorted, equally partitioned datasets ||
     35
     36 || multifilewc: ||  A job that counts words from several files. ||
     37
     38 || pentomino:  || A map/reduce tile laying program to find solutions to pentomino problems. ||
     39
     40 || pi: ||  A map/reduce program that estimates Pi using monte-carlo method. ||
     41
     42 || randomtextwriter: ||  A map/reduce program that writes 10GB of random textual data per node. ||
     43
     44 || randomwriter:  || A map/reduce program that writes 10GB of random data per node. ||
     45
     46 || sleep: ||  A job that sleeps at each map and reduce task. ||
     47
     48 || sort:  || A map/reduce program that sorts the data written by the random writer. ||
     49
     50 ||  sudoku: ||  A sudoku solver. ||
     51
     52 || wordcount:  || A map/reduce program that counts the words in the input files. ||
     53
     54
     55 
     56 
    2657 請參考 [http://hadoop.apache.org/core/docs/current/api/org/apache/hadoop/examples/package-summary.html org.apache.hadoop.examples]
    2758 
    28  
     59
    2960 
    3061{{{
    … …  
    3869<b>Class Summary</b></font></th>
    3970</tr>
     71
    4072<tr class="TableRowColor" bgcolor="white">
    4173<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>
    4274
    43 <td>This is an example Aggregated Hadoop Map/Reduce application.</td>
     75<td>This is an example Aggregated Hadoop Map/Reduce application. It reads the text input files, breaks each line into words and counts them. The output is a locally sorted list of words and the count of how often they occurred. To run: bin/hadoop jar hadoop-*-examples.jar aggregatewordcount in-dir  out-dir numOfReducers textinputformat </td>
    4476</tr>
    4577
    4678<tr class="TableRowColor" bgcolor="white">
    4779<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>
    48 <td>This is an example Aggregated Hadoop Map/Reduce application.</td>
     80<td>This is an example Aggregated Hadoop Map/Reduce application. Computes the histogram of the words in the input texts. To run: bin/hadoop jar hadoop-*-examples.jar aggregatewordhist in-dir  out-dir numOfReducers textinputformat </td>
     81</tr>
    4982
    50 </tr>
    51 <tr class="TableRowColor" bgcolor="white">
    52 <td width="15%"><b><a href="http://hadoop.apache.org/core/docs/current/api/org/apache/hadoop/examples/DBCountPageView.html" title="class in org.apache.hadoop.examples">DBCountPageView</a></b></td>
    53 <td>This is a demonstrative program, which uses DBInputFormat for reading
    54  the input data from a database, and DBOutputFormat for writing the data
    55  to the database.</td>
    56 </tr>
    5783<tr class="TableRowColor" bgcolor="white">
    5884<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>