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多选题 :  查询获取 Hadoop 全部的配置信息官方网址是()

（A）http://hadoop.apache.org/docs/current/hadoop- project-dist/hadoop-common/core-default.xml

（B）http://hadoop.apache.org/docs/current/hadoop- project-dist/hadoop-hdfs/hdfs-default.xml

（C）http://hadoop.apache.org/docs/current/hadoop- mapreduce-client/hadoop-mapreduce-client- core/mapred-default.xml

（D）http://hadoop.apache.org/docs/current/hadoop- yarn/hadoop-yarn-common/yarn-default.xml