1. 配置NameNode和DataNode的目录 ()
说明:配置dfs.name.dir 和 dfs.data.dir
<property> <name>dfs.namenode.name.dir</name> <value>file://${hadoop.tmp.dir}/dfs/name</value> <description>Determines where on the local filesystem the DFS name node should store the name table(fsimage). If this is a comma-delimited list of directories then the name table is replicated in all of the directories, for redundancy. </description> </property> <property> <name>dfs.datanode.data.dir</name> <value>file://${hadoop.tmp.dir}/dfs/data</value> <description>Determines where on the local filesystem an DFS data node should store its blocks. If this is a comma-delimited list of directories, then data will be stored in all named directories, typically on different devices. Directories that do not exist are ignored. </description> </property>
2. 配置副本度
<property> <name>dfs.replication</name> <value>2</value> </property>
3. 设置块大小
<property> <name>dfs.block.size</name> <value>134217728</value> </property> 64M: 67108864 32M: 33554432 16M: 16777216 8M: 8388608 4M: 4194304