程序包 org.apache.hadoop.hdfs.server.protocol
的使用

使用org.apache.hadoop.hdfs.server.protocol的程序包

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

org.apache.hadoop.hdfs.server.common使用的org.apache.hadoop.hdfs.server.protocol中的类

类和说明
UpgradeCommand This as a generic distributed upgrade command.

org.apache.hadoop.hdfs.server.datanode使用的org.apache.hadoop.hdfs.server.protocol中的类

类和说明
BlockMetaDataInfo Meta data information for a block
BlockRecoveryInfo
DatanodeProtocol Protocol that a DFS datanode uses to communicate with the NameNode.
DatanodeRegistration DatanodeRegistration class conatins all information the Namenode needs to identify and verify a Datanode when it contacts the Namenode.
InterDatanodeProtocol An inter-datanode protocol for updating generation stamp
UpgradeCommand This as a generic distributed upgrade command.

org.apache.hadoop.hdfs.server.namenode使用的org.apache.hadoop.hdfs.server.protocol中的类

类和说明
BlocksWithLocations A class to implement an array of BlockLocations It provide efficient customized serialization/deserialization methods in stead of using the default array (de)serialization provided by RPC
DatanodeCommand
DatanodeProtocol Protocol that a DFS datanode uses to communicate with the NameNode.
DatanodeRegistration DatanodeRegistration class conatins all information the Namenode needs to identify and verify a Datanode when it contacts the Namenode.
NamenodeProtocol Protocol that a secondary NameNode uses to communicate with the NameNode.
NamespaceInfo NamespaceInfo is returned by the name-node in reply to a data-node handshake.
UpgradeCommand This as a generic distributed upgrade command.

org.apache.hadoop.hdfs.server.protocol使用的org.apache.hadoop.hdfs.server.protocol中的类

类和说明
BlockMetaDataInfo Meta data information for a block
BlockRecoveryInfo
BlocksWithLocations A class to implement an array of BlockLocations It provide efficient customized serialization/deserialization methods in stead of using the default array (de)serialization provided by RPC
BlocksWithLocations.BlockWithLocations A class to keep track of a block and its locations
DatanodeCommand
DatanodeRegistration DatanodeRegistration class conatins all information the Namenode needs to identify and verify a Datanode when it contacts the Namenode.
NamespaceInfo NamespaceInfo is returned by the name-node in reply to a data-node handshake.
UpgradeCommand This as a generic distributed upgrade command.