我是Hadoop的初学者，最近我正在尝试运行reduce-sidejoinexample但它卡住了:Map100%andReduce100%但永远不会完成。进度、日志、代码、示例数据和配置文件如下:进度:12/10/0215:48:06INFOutil.NativeCodeLoader:Loadedthenative-hadooplibrary12/10/0215:48:06WARNsnappy.LoadSnappy:Snappynativelibrarynotloaded12/10/0215:48:06INFOmapred.FileInputFormat:Totalinputpath