类 org.apache.hadoop.hdfs.server.protocol.DatanodeRegistration
的使用

使用DatanodeRegistration的程序包

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

org.apache.hadoop.hdfs.server.datanode中DatanodeRegistration的使用

声明为DatanodeRegistration的org.apache.hadoop.hdfs.server.datanode中的字段

限定符和类型	字段和说明
DatanodeRegistration	DataNode.dnRegistration

参数类型为DatanodeRegistration的org.apache.hadoop.hdfs.server.datanode中的方法

限定符和类型	方法和说明
static void	DataNode.setNewStorageID(DatanodeRegistration dnReg)

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

返回DatanodeRegistration的org.apache.hadoop.hdfs.server.namenode中的方法

限定符和类型	方法和说明
DatanodeRegistration	NameNode.register(DatanodeRegistration nodeReg)

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

限定符和类型	方法和说明
void	NameNode.blockReceived(DatanodeRegistration nodeReg, Block[] blocks, String[] delHints)
DatanodeCommand	NameNode.blockReport(DatanodeRegistration nodeReg, long[] blocks)
void	NameNode.blocksBeingWrittenReport(DatanodeRegistration nodeReg, long[] blocks) add new replica blocks to the Inode to target mapping also add the Inode file to DataNodeDesc
void	NameNode.errorReport(DatanodeRegistration nodeReg, int errorCode, String msg)
DatanodeRegistration	NameNode.register(DatanodeRegistration nodeReg)
void	FSNamesystem.registerDatanode(DatanodeRegistration nodeReg) Register Datanode.
DatanodeCommand[]	NameNode.sendHeartbeat(DatanodeRegistration nodeReg, long capacity, long dfsUsed, long remaining, int xmitsInProgress, int xceiverCount) Data node notify the name node that it is alive Return an array of block-oriented commands for the datanode to execute.
void	NameNode.verifyRequest(DatanodeRegistration nodeReg) Verify request.

org.apache.hadoop.hdfs.server.protocol中DatanodeRegistration的使用

返回DatanodeRegistration的org.apache.hadoop.hdfs.server.protocol中的方法

限定符和类型	方法和说明
DatanodeRegistration	DatanodeProtocol.register(DatanodeRegistration registration) Register Datanode.

参数类型为DatanodeRegistration的org.apache.hadoop.hdfs.server.protocol中的方法

限定符和类型	方法和说明
void	DatanodeProtocol.blockReceived(DatanodeRegistration registration, Block[] blocks, String[] delHints) blockReceived() allows the DataNode to tell the NameNode about recently-received block data, with a hint for pereferred replica to be deleted when there is any excessive blocks.
DatanodeCommand	DatanodeProtocol.blockReport(DatanodeRegistration registration, long[] blocks) blockReport() tells the NameNode about all the locally-stored blocks.
void	DatanodeProtocol.blocksBeingWrittenReport(DatanodeRegistration registration, long[] blocks) blocksBeingWrittenReport() tells the NameNode about the blocks-being- written information
void	DatanodeProtocol.errorReport(DatanodeRegistration registration, int errorCode, String msg) errorReport() tells the NameNode about something that has gone awry.
DatanodeRegistration	DatanodeProtocol.register(DatanodeRegistration registration) Register Datanode.
DatanodeCommand[]	DatanodeProtocol.sendHeartbeat(DatanodeRegistration registration, long capacity, long dfsUsed, long remaining, int xmitsInProgress, int xceiverCount) sendHeartbeat() tells the NameNode that the DataNode is still alive and well.