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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

A.修改Master 節(jié)點(diǎn)authorized_keys 文件
B.修改Slave 節(jié)點(diǎn)authorized_keys 文件
C.驗(yàn)證Master 到每個(gè)Slave節(jié)點(diǎn)無(wú)密碼登錄
D.驗(yàn)證兩個(gè)Slave 節(jié)點(diǎn)到Master 節(jié)點(diǎn)無(wú)密碼登錄