Package org.apache.drill.metastore.iceberg.operate

Class ExpirationHandler

java.lang.Object

org.apache.drill.metastore.iceberg.operate.ExpirationHandler

public class ExpirationHandler
extends Object

Iceberg table generates metadata for each modification operation: snapshot, manifest file, table metadata file. Also when performing delete operation, previously stored data files are not deleted. These files with the time can occupy lots of space.

Table metadata in Iceberg is expired automatically if TableProperties.METADATA_DELETE_AFTER_COMMIT_ENABLED set to true. Number of metadata files to be retained is configured using TableProperties.METADATA_PREVIOUS_VERSIONS_MAX. Snapshots and data expiration should be called manually to align with metadata expiration process, the same table properties are used to determine if expiration is needed and which number of snapshots should be retained.

Constructor Summary

Constructors

Constructor	Description
ExpirationHandler(org.apache.iceberg.Table table)

Method Summary

Modifier and Type	Method	Description
void	expire()	Expires snapshots and related data if needed based on the given table properties values.
void	expireQuietly()	Expires snapshots and related data and ignores possible exceptions.

Methods inherited from class java.lang.Object

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

Constructor Details

ExpirationHandler

public ExpirationHandler(org.apache.iceberg.Table table)

Method Details

expire

public void expire()

Expires snapshots and related data if needed based on the given table properties values.

expireQuietly

public void expireQuietly()

Expires snapshots and related data and ignores possible exceptions.