org.apache.hadoop.hdfs.server.protocol

类 NamespaceInfo

java.lang.Object

org.apache.hadoop.hdfs.server.common.StorageInfo

org.apache.hadoop.hdfs.server.protocol.NamespaceInfo

所有已实现的接口:

Writable

public class NamespaceInfo
extends StorageInfo
implements Writable

NamespaceInfo is returned by the name-node in reply to a data-node handshake.

字段概要

从类继承的字段 org.apache.hadoop.hdfs.server.common.StorageInfo

cTime, layoutVersion, namespaceID

构造器概要

构造器

构造器和说明
NamespaceInfo()
NamespaceInfo(int nsID, long cT, int duVersion)

方法概要

方法

限定符和类型	方法和说明
int	getDistributedUpgradeVersion()
String	getRevision()
String	getVersion()
void	readFields(DataInput in) Deserialize the fields of this object from in.
void	write(DataOutput out) Serialize the fields of this object to out.

从类继承的方法 org.apache.hadoop.hdfs.server.common.StorageInfo

getCTime, getLayoutVersion, getNamespaceID, setStorageInfo

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

NamespaceInfo

public NamespaceInfo()

NamespaceInfo

public NamespaceInfo(int nsID,
             long cT,
             int duVersion)

方法详细资料

getVersion

public String getVersion()

getRevision

public String getRevision()

getDistributedUpgradeVersion

public int getDistributedUpgradeVersion()

write

public void write(DataOutput out)
           throws IOException

从接口复制的说明: Writable

Serialize the fields of this object to out.

指定者:

write 在接口中 Writable

参数:

out - DataOuput to serialize this object into.

抛出:

IOException

readFields

public void readFields(DataInput in)
                throws IOException

从接口复制的说明: Writable

Deserialize the fields of this object from in.

For efficiency, implementations should attempt to re-use storage in the existing object where possible.

指定者:

readFields 在接口中 Writable

参数:

in - DataInput to deseriablize this object from.

抛出:

IOException