Package com.linkedin.venice.controller

Class StoreBackupVersionCleanupService

java.lang.Object

com.linkedin.venice.service.AbstractVeniceService

com.linkedin.venice.controller.StoreBackupVersionCleanupService

All Implemented Interfaces:

Closeable, AutoCloseable

public class StoreBackupVersionCleanupService
extends AbstractVeniceService

This service is in charge of cleaning up backup versions based on retention policy defined on store basis. If it is not specified, the retention policy will be controlled by config: ConfigKeys.CONTROLLER_BACKUP_VERSION_DEFAULT_RETENTION_MS. The backup versions will become eligible for removal if the latest current version has been promoted for more than configured retention time period. If the specified retention time is 0, this service won't delete the backup version right after the latest version is promoted to the new current version since there could be a delay before Routers receive the new version promotion notification. Currently, the minimal retention time is hard-coded as 1 hour here: MINIMAL_BACKUP_VERSION_CLEANUP_DELAY to accommodate the delay between Controller and Router.

Nested Class Summary

Nested classes/interfaces inherited from class com.linkedin.venice.service.AbstractVeniceService

AbstractVeniceService.ServiceState

Field Summary

Fields

Modifier and Type	Field	Description
static final String	TYPE_CURRENT_VERSION

Fields inherited from class com.linkedin.venice.service.AbstractVeniceService

logger, serviceState

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	StoreBackupVersionCleanupService(VeniceHelixAdmin admin, VeniceControllerMultiClusterConfig multiClusterConfig, Time time, io.tehuti.metrics.MetricsRepository metricsRepository)
	StoreBackupVersionCleanupService(VeniceHelixAdmin admin, VeniceControllerMultiClusterConfig multiClusterConfig, io.tehuti.metrics.MetricsRepository metricsRepository)

Method Summary

Modifier and Type	Method	Description
protected boolean	cleanupBackupVersion(Store store, String clusterName)	Using a separate function for store cleanup is to make it easy for testing.
static void	setWaitTimeDeleteRepushSourceVersion(long waitTime)
boolean	startInner()
void	stopInner()
protected static boolean	whetherStoreReadyToBeCleanup(Store store, long defaultBackupVersionRetentionMs, Time time, int currentVersion)

Methods inherited from class com.linkedin.venice.service.AbstractVeniceService

close, getName, isRunning, start, stop

Methods inherited from class java.lang.Object

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

Field Details

TYPE_CURRENT_VERSION

public static final String TYPE_CURRENT_VERSION

See Also:

• Constant Field Values

Constructor Details

StoreBackupVersionCleanupService

public StoreBackupVersionCleanupService(VeniceHelixAdmin admin,
 VeniceControllerMultiClusterConfig multiClusterConfig,
 io.tehuti.metrics.MetricsRepository metricsRepository)

StoreBackupVersionCleanupService

protected StoreBackupVersionCleanupService(VeniceHelixAdmin admin,
 VeniceControllerMultiClusterConfig multiClusterConfig,
 Time time,
 io.tehuti.metrics.MetricsRepository metricsRepository)

Method Details

startInner

public boolean startInner()

Specified by:

startInner in class AbstractVeniceService

Returns:

true if the service is completely started, false if it is still starting asynchronously (in this case, it is the implementer's responsibility to set AbstractVeniceService.serviceState to AbstractVeniceService.ServiceState.STARTED upon completion of the async work).

See Also:

• AbstractVeniceService.startInner()

stopInner

public void stopInner()
               throws IOException

Specified by:

stopInner in class AbstractVeniceService

Throws:

IOException

See Also:

• AbstractVeniceService.stopInner()

setWaitTimeDeleteRepushSourceVersion

public static void setWaitTimeDeleteRepushSourceVersion(long waitTime)

whetherStoreReadyToBeCleanup

protected static boolean whetherStoreReadyToBeCleanup(Store store,
 long defaultBackupVersionRetentionMs,
 Time time,
 int currentVersion)

cleanupBackupVersion

protected boolean cleanupBackupVersion(Store store,
 String clusterName)

Using a separate function for store cleanup is to make it easy for testing.

Returns:

whether any backup version is removed or not