org.apache.hadoop.hdfs.server.protocol

类 BalancerBandwidthCommand

java.lang.Object

org.apache.hadoop.hdfs.server.protocol.DatanodeCommand

org.apache.hadoop.hdfs.server.protocol.BalancerBandwidthCommand

所有已实现的接口:

Writable

public class BalancerBandwidthCommand
extends DatanodeCommand

Balancer bandwidth command instructs each datanode to change its value for the max amount of network bandwidth it may use during the block balancing operation. The Balancer Bandwidth Command contains the new bandwidth value as its payload. The bandwidth value is in bytes per second.

字段概要

字段

限定符和类型	字段和说明
static int	BBC_VERSION

从类继承的字段 org.apache.hadoop.hdfs.server.protocol.DatanodeCommand

FINALIZE, REGISTER

构造器概要

构造器

构造器和说明
BalancerBandwidthCommand(long bandwidth) Balancer Bandwidth Command constructor.

方法概要

方法

限定符和类型	方法和说明
long	getBalancerBandwidthValue() Get current value of the max balancer bandwidth in bytes per second.
int	getBalancerBandwidthVersion() Get current value of the balancer bandwidth version.
void	readFields(DataInput in) Reads the bandwidth payload from the Balancer Bandwidth Command packet.
void	write(DataOutput out) Writes the bandwidth payload to the Balancer Bandwidth Command packet.

从类继承的方法 org.apache.hadoop.hdfs.server.protocol.DatanodeCommand

getAction

从类继承的方法 java.lang.Object

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

字段详细资料

BBC_VERSION

public static final int BBC_VERSION

另请参阅:

常量字段值

构造器详细资料

BalancerBandwidthCommand

public BalancerBandwidthCommand(long bandwidth)

Balancer Bandwidth Command constructor.

参数:

bandwidth - Blanacer bandwidth in bytes per second.

方法详细资料

getBalancerBandwidthVersion

public int getBalancerBandwidthVersion()

Get current value of the balancer bandwidth version.

返回:

version blanacer bandwidth command version

getBalancerBandwidthValue

public long getBalancerBandwidthValue()

Get current value of the max balancer bandwidth in bytes per second.

返回:

bandwidth Blanacer bandwidth in bytes per second for this datanode.

write

public void write(DataOutput out)
           throws IOException

Writes the bandwidth payload to the Balancer Bandwidth Command packet.

指定者:

write 在接口中 Writable

覆盖:

write 在类中 DatanodeCommand

参数:

out - DataOutput stream used for writing commands to the datanode.

抛出:

IOException

readFields

public void readFields(DataInput in)
                throws IOException

Reads the bandwidth payload from the Balancer Bandwidth Command packet.

指定者:

readFields 在接口中 Writable

覆盖:

readFields 在类中 DatanodeCommand

参数:

in - DataInput stream used for reading commands to the datanode.

抛出:

IOException