org.apache.hadoop.hdfs.server.datanode

类 UpgradeObjectDatanode

java.lang.Object

org.apache.hadoop.hdfs.server.common.UpgradeObject

org.apache.hadoop.hdfs.server.datanode.UpgradeObjectDatanode

所有已实现的接口:

Comparable<Upgradeable>, Runnable, Upgradeable

public abstract class UpgradeObjectDatanode
extends UpgradeObject
implements Runnable

Base class for data-node upgrade objects. Data-node upgrades are run in separate threads.

字段概要

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

status

构造器概要

构造器

构造器和说明
UpgradeObjectDatanode()

方法概要

方法

限定符和类型	方法和说明
UpgradeCommand	completeUpgrade() Complete upgrade and return a status complete command for broadcasting.
abstract void	doUpgrade() Specifies how the upgrade is performed.
protected DataNode	getDatanode()
HdfsConstants.NodeType	getType() Get the type of the software component, which this object is upgrading.
void	run()

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

compareTo, equals, getDescription, getUpgradeStatus, getUpgradeStatusReport, hashCode

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.apache.hadoop.hdfs.server.common.Upgradeable

getVersion, startUpgrade

构造器详细资料

UpgradeObjectDatanode

public UpgradeObjectDatanode()

方法详细资料

getType

public HdfsConstants.NodeType getType()

从接口复制的说明: Upgradeable

Get the type of the software component, which this object is upgrading.

指定者:

getType 在接口中 Upgradeable

返回:

type

getDatanode

protected DataNode getDatanode()

doUpgrade

public abstract void doUpgrade()
                        throws IOException

Specifies how the upgrade is performed.

抛出:

IOException

run

public void run()

指定者:

run 在接口中 Runnable

completeUpgrade

public UpgradeCommand completeUpgrade()
                               throws IOException

Complete upgrade and return a status complete command for broadcasting. Data-nodes finish upgrade at different times. The data-node needs to re-confirm with the name-node that the upgrade is complete while other nodes are still upgrading.

指定者:

completeUpgrade 在接口中 Upgradeable

抛出:

IOException