Changes between Version 1 and Version 2 of III140705/Lab18


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Timestamp:
Feb 1, 2016, 5:29:37 PM (10 years ago)
Author:
jazz
Comment:

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  • III140705/Lab18

    v1 v2  
    3030  * http://hadoop.apache.org/docs/r1.0.4/api/org/apache/hadoop/mapreduce/Job.html#setNumReduceTasks(int)
    3131
     32 * 實際上 lab010 的程式碼與 lab009 的程式碼只差了以下幾行
     33{{{
     34#!diff
     35diff -Naur lab009/src/WordCount.java lab010/src/WordCount.java
     36--- lab009/src/WordCount.java   2015-03-08 09:33:01.207452767 +0800
     37+++ lab010/src/WordCount.java   2015-03-08 09:33:01.207452767 +0800
     38@@ -28,6 +28,7 @@
     39     job.setReducerClass(IntSumReducer.class);
     40     job.setOutputKeyClass(Text.class);
     41     job.setOutputValueClass(IntWritable.class);
     42+    job.setNumReduceTasks(2);
     43     FileInputFormat.addInputPath(job, new Path(otherArgs[0]));
     44     FileOutputFormat.setOutputPath(job, new Path(otherArgs[1]));
     45     System.exit(job.waitForCompletion(true) ? 0 : 1);
     46}}}
    3247== 實作習題 ==
    3348