Package org.apache.zookeeper.server

Class DatadirCleanupManager

java.lang.Object

org.apache.zookeeper.server.DatadirCleanupManager

public class DatadirCleanupManager
extends Object

This class manages the cleanup of snapshots and corresponding transaction logs by scheduling the auto purge task with the specified 'autopurge.purgeInterval'. It keeps the most recent 'autopurge.snapRetainCount' number of snapshots and corresponding transaction logs.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	DatadirCleanupManager.PurgeTaskStatus	Status of the dataDir purge task

Constructor Summary

Constructors

Constructor	Description
DatadirCleanupManager(File snapDir, File dataLogDir, int snapRetainCount, int purgeInterval)	Constructor of DatadirCleanupManager.

Method Summary

Modifier and Type	Method	Description
File	getDataLogDir()	Returns transaction log directory.
int	getPurgeInterval()	Returns purge interval in hours.
DatadirCleanupManager.PurgeTaskStatus	getPurgeTaskStatus()	Returns the status of the purge task.
File	getSnapDir()	Returns the snapshot directory.
int	getSnapRetainCount()	Returns the number of snapshots to be retained after purge.
void	shutdown()	Shutdown the purge task.
void	start()	Validates the purge configuration and schedules the purge task.

Methods inherited from class java.lang.Object

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

Constructor Detail

DatadirCleanupManager

public DatadirCleanupManager(File snapDir,
                             File dataLogDir,
                             int snapRetainCount,
                             int purgeInterval)

Constructor of DatadirCleanupManager. It takes the parameters to schedule the purge task.

Parameters:

snapDir - snapshot directory

dataLogDir - transaction log directory

snapRetainCount - number of snapshots to be retained after purge

purgeInterval - purge interval in hours

Method Detail

start

public void start()

Validates the purge configuration and schedules the purge task. Purge task keeps the most recent snapRetainCount number of snapshots and deletes the remaining for every purgeInterval hour(s).

purgeInterval of 0 or negative integer will not schedule the purge task.

See Also:

PurgeTxnLog.purge(File, File, int)

shutdown

public void shutdown()

Shutdown the purge task.

getPurgeTaskStatus

public DatadirCleanupManager.PurgeTaskStatus getPurgeTaskStatus()

Returns the status of the purge task.

Returns:

the status of the purge task

getSnapDir

public File getSnapDir()

Returns the snapshot directory.

Returns:

the snapshot directory.

getDataLogDir

public File getDataLogDir()

Returns transaction log directory.

Returns:

the transaction log directory.

getPurgeInterval

public int getPurgeInterval()

Returns purge interval in hours.

Returns:

the purge interval in hours.

getSnapRetainCount

public int getSnapRetainCount()

Returns the number of snapshots to be retained after purge.

Returns:

the number of snapshots to be retained after purge.