org.apache.hive.common.util

Class ShutdownHookManager

java.lang.Object

org.apache.hive.common.util.ShutdownHookManager

public class ShutdownHookManager
extends Object

This is just a wrapper around hadoop's ShutdownHookManager but also manages delete on exit hook for temp files.

Constructor Summary

Constructors

Constructor and Description
ShutdownHookManager()

Method Summary

Modifier and Type	Method and Description
static void	addShutdownHook(Runnable shutdownHook) Adds shutdown hook with default priority (10)
static void	addShutdownHook(Runnable shutdownHook, int priority) Adds a shutdownHook with a priority, the higher the priority the earlier will run.
static void	cancelDeleteOnExit(File file) deregister file from delete-on-exit hook
static void	deleteOnExit(File file) register file to delete-on-exit hook FileUtils.createTempFile(java.lang.String, java.lang.String, java.lang.String)
static boolean	isShutdownInProgress() Indicates if shutdown is in progress or not.
static 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

Constructor Detail

ShutdownHookManager

public ShutdownHookManager()

Method Detail

addShutdownHook

public static void addShutdownHook(Runnable shutdownHook)

Adds shutdown hook with default priority (10)

Parameters:

shutdownHook - - shutdown hook

addShutdownHook

public static 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.

isShutdownInProgress

public static boolean isShutdownInProgress()

Indicates if shutdown is in progress or not.

Returns:

TRUE if the shutdown is in progress, otherwise FALSE.

removeShutdownHook

public static boolean removeShutdownHook(Runnable shutdownHook)

Removes a shutdownHook.

Parameters:

shutdownHook - shutdownHook to remove.

Returns:

TRUE if the shutdownHook was registered and removed, FALSE otherwise (including when shutdownHook == null)

deleteOnExit

public static void deleteOnExit(File file)

register file to delete-on-exit hook FileUtils.createTempFile(java.lang.String, java.lang.String, java.lang.String)

cancelDeleteOnExit

public static void cancelDeleteOnExit(File file)

deregister file from delete-on-exit hook