org.apache.hudi.table.upgrade

Class FourToThreeDowngradeHandler

java.lang.Object

org.apache.hudi.table.upgrade.FourToThreeDowngradeHandler

All Implemented Interfaces:

DowngradeHandler

public class FourToThreeDowngradeHandler
extends Object
implements DowngradeHandler

DowngradeHandler to assist in downgrading HoodieTable from version 4 to 3.

Constructor Summary

Constructors

Constructor and Description
FourToThreeDowngradeHandler()

Method Summary

Modifier and Type	Method and Description
Map<ConfigProperty,String>	downgrade(HoodieWriteConfig config, HoodieEngineContext context, String instantTime, SupportsUpgradeDowngrade upgradeDowngradeHelper) to be invoked to downgrade hoodie table from one version to a lower version.

Methods inherited from class java.lang.Object

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

Constructor Detail

FourToThreeDowngradeHandler

public FourToThreeDowngradeHandler()

Method Detail

downgrade

public Map<ConfigProperty,String> downgrade(HoodieWriteConfig config,
                                            HoodieEngineContext context,
                                            String instantTime,
                                            SupportsUpgradeDowngrade upgradeDowngradeHelper)

Description copied from interface: DowngradeHandler

to be invoked to downgrade hoodie table from one version to a lower version.

Specified by:

downgrade in interface DowngradeHandler

Parameters:

config - instance of HoodieWriteConfig to be used.

context - instance of HoodieEngineContext to be used.

instantTime - current instant time that should not be touched.

upgradeDowngradeHelper - instance of SupportsUpgradeDowngrade to be used.

Returns:

Map of config properties and its values to be added to table properties.