hdfs默认副本策略

机架感知(副本存储节点选择) 1. 官方ip地址 http://hadoop.apache.org/docs/r2.7.2/hadoop-project-dist/hadoop-hdfs/HdfsDesign.html#Data_Replication 机架感知说明 For the common case, when the replication factor is three, HDFS’s
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