org.apache.hudi.common.table.timeline.versioning

Class MetadataMigrator<T>

java.lang.Object

org.apache.hudi.common.table.timeline.versioning.MetadataMigrator<T>

Type Parameters:

T -

Direct Known Subclasses:

CleanMetadataMigrator, CleanPlanMigrator, CompactionPlanMigrator

public class MetadataMigrator<T>
extends Object

Migrates a specific metadata type stored in .hoodie folder to latest version.

Constructor Summary

Constructors

Constructor and Description
MetadataMigrator(HoodieTableMetaClient metaClient, List<VersionMigrator<T>> migratorList)

Method Summary

Modifier and Type	Method and Description
T	migrateToVersion(T metadata, int metadataVersion, int targetVersion) Migrate metadata to a specific version.
T	upgradeToLatest(T metadata, int metadataVersion) Upgrade Metadata version to its latest.

Methods inherited from class java.lang.Object

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

Constructor Detail

MetadataMigrator

public MetadataMigrator(HoodieTableMetaClient metaClient,
                        List<VersionMigrator<T>> migratorList)

Method Detail

upgradeToLatest

public T upgradeToLatest(T metadata,
                         int metadataVersion)

Upgrade Metadata version to its latest.

Parameters:

metadata - Metadata

metadataVersion - Current version of metadata

Returns:

Metadata conforming to the latest version of this metadata

migrateToVersion

public T migrateToVersion(T metadata,
                          int metadataVersion,
                          int targetVersion)

Migrate metadata to a specific version.

Parameters:

metadata - Hoodie Table Meta Client

metadataVersion - Metadata Version

targetVersion - Target Version

Returns:

Metadata conforming to the target version