接口 org.apache.hadoop.hdfs.server.namenode.FSClusterStats
的使用

使用FSClusterStats的程序包

程序包	说明
org.apache.hadoop.hdfs.server.namenode

org.apache.hadoop.hdfs.server.namenode中FSClusterStats的使用

实现FSClusterStats的org.apache.hadoop.hdfs.server.namenode中的类

限定符和类型	类和说明
class	FSNamesystem FSNamesystem does the actual bookkeeping work for the DataNode.

参数类型为FSClusterStats的org.apache.hadoop.hdfs.server.namenode中的方法

限定符和类型	方法和说明
static BlockPlacementPolicy	BlockPlacementPolicy.getInstance(Configuration conf, FSClusterStats stats, NetworkTopology clusterMap) Get an instance of the configured Block Placement Policy based on the value of the configuration paramater dfs.block.replicator.classname.
void	BlockPlacementPolicyWithNodeGroup.initialize(Configuration conf, FSClusterStats stats, NetworkTopology clusterMap)
void	BlockPlacementPolicyDefault.initialize(Configuration conf, FSClusterStats stats, NetworkTopology clusterMap) Used to setup a BlockPlacementPolicy object.
protected abstract void	BlockPlacementPolicy.initialize(Configuration conf, FSClusterStats stats, NetworkTopology clusterMap) Used to setup a BlockPlacementPolicy object.