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Update Hadoop-MapReduce.md

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heibaiying
2020-09-14 17:41:09 +08:00
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@@ -149,7 +149,7 @@ public class WordCountMapper extends Mapper<LongWritable, Text, Text, IntWritabl
`WordCountMapper` 继承自 `Mappe` 类，这是一个泛型类，定义如下：
`WordCountMapper` 继承自 `Mapper` 类，这是一个泛型类，定义如下：
```java
WordCountMapper extends Mapper<LongWritable, Text, Text, IntWritable>
@@ -384,4 +384,4 @@ job.setNumReduceTasks(WordCountDataUtils.WORD_LIST.size());
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