org.apache.hadoop.hbase.procedure2

Interface ProcedureRunnableSet

All Known Implementing Classes:

MasterProcedureQueue, ProcedureSimpleRunQueue

@InterfaceAudience.Private
 @InterfaceStability.Evolving
public interface ProcedureRunnableSet

Keep track of the runnable procedures

Method Summary

Modifier and Type	Method and Description
void	addBack(Procedure proc) Inserts the specified element at the end of this queue.
void	addFront(Procedure proc) Inserts the specified element at the front of this queue.
void	clear() Removes all of the elements from this collection.
void	completionCleanup(Procedure proc) The procedure in execution completed.
Long	poll() Fetch one Procedure from the queue
void	signalAll() In case the class is blocking on poll() waiting for items to be added, this method should awake poll() and poll() should return.
int	size() Returns the number of elements in this collection.
void	yield(Procedure proc) The procedure can't run at the moment.

Method Detail

addFront

void addFront(Procedure proc)

Inserts the specified element at the front of this queue.

Parameters:

proc - the Procedure to add

addBack

void addBack(Procedure proc)

Inserts the specified element at the end of this queue.

Parameters:

proc - the Procedure to add

yield

void yield(Procedure proc)

The procedure can't run at the moment. add it back to the queue, giving priority to someone else.

Parameters:

proc - the Procedure to add back to the list

completionCleanup

void completionCleanup(Procedure proc)

The procedure in execution completed. This can be implemented to perform cleanups.

Parameters:

proc - the Procedure that completed the execution.

poll

Long poll()

Fetch one Procedure from the queue

Returns:

the Procedure ID to execute, or null if nothing present.

signalAll

void signalAll()

In case the class is blocking on poll() waiting for items to be added, this method should awake poll() and poll() should return.

size

int size()

Returns the number of elements in this collection.

Returns:

the number of elements in this collection.

clear

void clear()

Removes all of the elements from this collection.