mapper implements data table merging and cancels the processing of mapreducer. This solves the problem that the new file cannot find the path in the mapper and no pointer null pointer - Code World

mapper implements data table merging and cancels the processing of mapreducer. This solves the problem that the new file cannot find the path in the mapper and no pointer null pointer

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Origin blog.csdn.net/weixin_37056888/article/details/105499154

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