Hadoop族版本变化

lfz_carlos

于 2016-02-26 01:54:22 发布

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本文链接：https://blog.youkuaiyun.com/lfz_carlos/article/details/50744987

版权

org.apache.hadoop.hbase.client.Put

变化：

0.94.6时public class Put extends Mutation implements HeapSize, Writable, Comparable<Row>
0.95.2时public class Put extends Mutation implements HeapSize, Comparable<Row>

影响：

public static class Map extends

‘ Mapper<ImmutableBytesWritable, Result, ImmutableBytesWritable, Writable{ 
.....
 @Override  
   protected void map(ImmutableBytesWritable rowKey, Result result, Context context)  
       throws IOException, InterruptedException {  
.....
 Put put = new Put(value);  
context.write(tableName, put);  
   	}  
   	}

解决

context.write 报语法错误，因为put不再继承Writable了

需要将输出的Writable改为Put类型