org.apache.hadoop.hbase.master.procedure

Class ProcedurePrepareLatch

java.lang.Object

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

Direct Known Subclasses:

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.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	ProcedurePrepareLatch.CompatibilityLatch

Constructor Summary

Constructors

Constructor and Description
ProcedurePrepareLatch()

Method Summary

Modifier and Type	Method and Description
abstract void	await()
protected abstract void	countDown(Procedure proc)
static ProcedurePrepareLatch	createLatch()
static boolean	hasProcedureSupport()
protected static void	releaseLatch(ProcedurePrepareLatch latch, Procedure proc)

Methods inherited from class java.lang.Object

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

Constructor Detail

ProcedurePrepareLatch

public ProcedurePrepareLatch()

Method Detail

createLatch

public static ProcedurePrepareLatch createLatch()

hasProcedureSupport

public static boolean hasProcedureSupport()

countDown

protected abstract void countDown(Procedure proc)

await

public abstract void await()
                    throws IOException

Throws:

IOException

releaseLatch

protected static void releaseLatch(ProcedurePrepareLatch latch,
                                   Procedure proc)