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现在我正在编写一个 Java 程序来使用 Hadoop MapReduce 将输出写入 HBase。问题是关于Combiner 类的。因为现在我的 reduce 类扩展了 TableReducer,而不是 Reducer。那么我的组合器类呢,它应该也扩展 TableReducer,还是仍然扩展 Reducer?
您的组合器类应该扩展 TableReducer 本身而不是 Reducer。