org.apache.ignite.internal.processors.hadoop.impl.v2

Class HadoopShutdownHookManager

java.lang.Object

org.apache.ignite.internal.processors.hadoop.impl.v2.HadoopShutdownHookManager

public class HadoopShutdownHookManager
extends Object

Fake manager for shutdown hooks.

Method Summary

Modifier and Type	Method and Description
void	addShutdownHook(Runnable shutdownHook, int priority) Adds a shutdownHook with a priority, the higher the priority the earlier will run.
static HadoopShutdownHookManager	get() Return ShutdownHookManager singleton.
boolean	hasShutdownHook(Runnable shutdownHook) Indicates if a shutdownHook is registered or not.
boolean	isShutdownInProgress() Indicates if shutdown is in progress or not.
boolean	removeShutdownHook(Runnable shutdownHook) Removes a shutdownHook.

Methods inherited from class java.lang.Object

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

Method Detail

get

public static HadoopShutdownHookManager get()

Return ShutdownHookManager singleton.

Returns:

ShutdownHookManager singleton.

addShutdownHook

public void addShutdownHook(Runnable shutdownHook,
                            int priority)

Adds a shutdownHook with a priority, the higher the priority the earlier will run. ShutdownHooks with same priority run in a non-deterministic order.

Parameters:

shutdownHook - shutdownHook Runnable

priority - priority of the shutdownHook.

removeShutdownHook

public boolean removeShutdownHook(Runnable shutdownHook)

Removes a shutdownHook.

Parameters:

shutdownHook - shutdownHook to remove.

Returns:

TRUE if the shutdownHook was registered and removed, FALSE otherwise.

hasShutdownHook

public boolean hasShutdownHook(Runnable shutdownHook)

Indicates if a shutdownHook is registered or not.

Parameters:

shutdownHook - shutdownHook to check if registered.

Returns:

TRUE/FALSE depending if the shutdownHook is is registered.

isShutdownInProgress

public boolean isShutdownInProgress()

Indicates if shutdown is in progress or not.

Returns:

TRUE if the shutdown is in progress, otherwise FALSE.