org.apache.hadoop.hbase.master.procedure

类 ProcedurePrepareLatch

java.lang.Object

org.apache.hadoop.hbase.master.procedure.ProcedurePrepareLatch

直接已知子类:

ProcedurePrepareLatch.CompatibilityLatch

@InterfaceAudience.Private
 @InterfaceStability.Evolving
public abstract class ProcedurePrepareLatch
extends Object

Latch used by the Master to have the prepare() sync behaviour for old clients, that can only get exceptions in a synchronous way.

嵌套类概要

嵌套类

限定符和类型	类和说明
protected static class	ProcedurePrepareLatch.CompatibilityLatch

构造器概要

构造器

构造器和说明
ProcedurePrepareLatch()

方法概要

限定符和类型	方法和说明
abstract void	await()
protected abstract void	countDown(Procedure proc)
static ProcedurePrepareLatch	createBlockingLatch() Creates a latch which blocks.
static ProcedurePrepareLatch	createLatch() Create a latch if the client does not have async proc support.
static ProcedurePrepareLatch	createLatch(int major, int minor) Create a latch if the client does not have async proc support
static ProcedurePrepareLatch	getNoopLatch() Returns the singleton latch which does nothing.
static void	releaseLatch(ProcedurePrepareLatch latch, Procedure proc)

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

ProcedurePrepareLatch

public ProcedurePrepareLatch()

方法详细资料

createLatch

public static ProcedurePrepareLatch createLatch()

Create a latch if the client does not have async proc support. This uses the default 1.1 version.

返回:

a CompatibilityLatch or a NoopLatch if the client has async proc support

createLatch

public static ProcedurePrepareLatch createLatch(int major,
                                                int minor)

Create a latch if the client does not have async proc support

参数:

major - major version with async proc support

minor - minor version with async proc support

返回:

a CompatibilityLatch or a NoopLatch if the client has async proc support

createBlockingLatch

public static ProcedurePrepareLatch createBlockingLatch()

Creates a latch which blocks.

getNoopLatch

public static ProcedurePrepareLatch getNoopLatch()

Returns the singleton latch which does nothing.

countDown

protected abstract void countDown(Procedure proc)

await

public abstract void await()
                    throws IOException

抛出:

IOException

releaseLatch

public static void releaseLatch(ProcedurePrepareLatch latch,
                                Procedure proc)