Changes between Version 18 and Version 19 of jazz/Hadoop_Lab2


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Timestamp:
Mar 24, 2009, 2:18:31 PM (15 years ago)
Author:
waue
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  • jazz/Hadoop_Lab2

    v18 v19  
    348348{{{
    349349#!html
     350<html lang="zh-tw"><head>
     351
     352<meta content="text/html; charset=ISO-8859-1" http-equiv="content-type"><title>a.html</title>
     353
     354</head><body>
    350355<br>
    351356
    352 <p style="text-align: center;">
    353 
    354 <font size="+2">
    355 <b>Class Summary</b></font></p><table style="text-align: left; width: 100%;" border="1" cellpadding="2" cellspacing="2"><tbody><tr><td><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><td>This is an example Aggregated Hadoop Map/Reduce application. It reads
    356 the text input files, breaks each line into words and counts them. The
    357 output is a locally sorted list of words and the count of how often
    358 they occurred. To run: bin/hadoop jar hadoop-*-examples.jar
    359 aggregatewordcount in-dir out-dir numOfReducers textinputformat</td></tr><tr><td><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><td>This is an example Aggregated Hadoop Map/Reduce application. Computes
    360 the histogram of the words in the input texts. To run: bin/hadoop jar
    361 hadoop-*-examples.jar aggregatewordhist in-dir out-dir numOfReducers
    362 textinputformat</td></tr><tr><td><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><td>A description of an example program based on its class and a human-readable description.</td></tr><tr><td><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><td></td></tr><tr><td><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><td>This is the trivial map/reduce program that does absolutely nothing
     357<p>
     358</p><table summary="" border="1" cellpadding="3" cellspacing="0" width="100%">
     359<tbody><tr class="TableHeadingColor" bgcolor="#ccccff">
     360<th colspan="2" align="left"><font size="+2">
     361<b>Class Summary</b></font></th>
     362</tr>
     363<tr class="TableRowColor" bgcolor="white">
     364
     365<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>
     366<td>This is an example Aggregated Hadoop Map/Reduce application. It
     367reads the text input files, breaks each line into words and counts
     368them. The output is a locally sorted list of words and the count of how
     369often they occurred. To run: bin/hadoop jar hadoop-*-examples.jar
     370aggregatewordcount in-dir out-dir numOfReducers textinputformat </td>
     371</tr>
     372<tr class="TableRowColor" bgcolor="white">
     373<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>
     374<td>This is an example Aggregated Hadoop Map/Reduce application.
     375Computes the histogram of the words in the input texts. To run:
     376bin/hadoop jar hadoop-*-examples.jar aggregatewordhist in-dir out-dir
     377numOfReducers textinputformat </td>
     378</tr>
     379<tr class="TableRowColor" bgcolor="white">
     380<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>
     381<td>A description of an example program based on its class and a human-readable description.</td>
     382</tr>
     383
     384<tr class="TableRowColor" bgcolor="white">
     385<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>
     386<td>&nbsp;</td>
     387</tr>
     388<tr class="TableRowColor" bgcolor="white">
     389<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>
     390<td>This is the trivial map/reduce program that does absolutely nothing
    363391other than use the framework to fragment and sort the input values. To
    364392run: bin/hadoop jar build/hadoop-examples.jar join [-m maps] [-r
    365393reduces] [-inFormat input format class] [-outFormat output format
    366394class] [-outKey output key class] [-outValue output value class]
    367 [-joinOp ] [in-dir]* in-dir out-dir</inner></td></tr><tr><td><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><td>This program uses map/reduce to just run a distributed job where there
    368 is
     395[-joinOp <inner |outer|override>] [in-dir]* in-dir out-dir</inner></td>
     396</tr>
     397<tr class="TableRowColor" bgcolor="white">
     398<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>
     399<td>This program uses map/reduce to just run a distributed job where
     400there is
    369401no interaction between the tasks and each task writes a large unsorted
    370402random sequence of words.To run: bin/hadoop jar
    371403hadoop-${version}-examples.jar randomtextwriter [-outFormat output
    372 format class] output</td></tr><tr><td><b><a href="http://hadoop.apache.org/core/docs/current/api/org/apache/hadoop/examples/RandomWriter.html" title="class in org.apache.hadoop.examples">RandomWriter</a></b></td><td>This program uses map/reduce to just run a distributed job where there
    373 is
     404format class] output</td>
     405
     406</tr>
     407<tr class="TableRowColor" bgcolor="white">
     408<td width="15%"><b><a href="http://hadoop.apache.org/core/docs/current/api/org/apache/hadoop/examples/RandomWriter.html" title="class in org.apache.hadoop.examples">RandomWriter</a></b></td>
     409<td>This program uses map/reduce to just run a distributed job where
     410there is
    374411no interaction between the tasks and each task write a large unsorted
    375412random binary sequence file of BytesWritable.To run: bin/hadoop jar
    376413hadoop-${version}-examples.jar randomwriter [-outFormat output format
    377 class] output</td></tr><tr><td><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&lt;K,V&gt;</a></b></td><td>This is the trivial map/reduce program that does absolutely nothing
     414class] output</td>
     415</tr>
     416<tr class="TableRowColor" bgcolor="white">
     417<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&lt;K,V&gt;</a></b></td>
     418<td>This is the trivial map/reduce program that does absolutely nothing
    378419other than use the framework to fragment and sort the input values.To
    379420run: bin/hadoop jar build/hadoop-examples.jar sort [-m maps] [-r
    380421reduces] [-inFormat input format class] [-outFormat output format
    381422class] [-outKey output key class] [-outValue output value class]
    382 [-totalOrder pcnt num samples max splits] in-dir out-dir</td></tr><tr><td><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><td>This is an example Hadoop Map/Reduce application.</td></tr></tbody></table>
     423[-totalOrder pcnt num samples max splits] in-dir out-dir</td>
     424</tr>
     425<tr class="TableRowColor" bgcolor="white">
     426<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>
     427
     428<td>This is an example Hadoop Map/Reduce application.</td>
     429</tr>
     430</tbody></table>
     431</body></html>
    383432}}}
    384433