org.apache.iceberg.spark.actions

Class ExpireSnapshotsSparkAction

java.lang.Object

org.apache.iceberg.spark.actions.ExpireSnapshotsSparkAction

All Implemented Interfaces:

org.apache.iceberg.actions.Action<org.apache.iceberg.actions.ExpireSnapshots,org.apache.iceberg.actions.ExpireSnapshots.Result>, org.apache.iceberg.actions.ExpireSnapshots

public class ExpireSnapshotsSparkAction
extends java.lang.Object
implements org.apache.iceberg.actions.ExpireSnapshots

An action that performs the same operation as ExpireSnapshots but uses Spark to determine the delta in files between the pre and post-expiration table metadata. All of the same restrictions of ExpireSnapshots also apply to this action.

This action first leverages ExpireSnapshots to expire snapshots and then uses metadata tables to find files that can be safely deleted. This is done by anti-joining two Datasets that contain all manifest and content files before and after the expiration. The snapshot expiration will be fully committed before any deletes are issued.

This operation performs a shuffle so the parallelism can be controlled through 'spark.sql.shuffle.partitions'.

Deletes are still performed locally after retrieving the results from the Spark executors.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.iceberg.actions.ExpireSnapshots

org.apache.iceberg.actions.ExpireSnapshots.Result

Field Summary

Fields

Modifier and Type	Field and Description
protected static org.apache.iceberg.relocated.com.google.common.base.Joiner	COMMA_JOINER
protected static org.apache.iceberg.relocated.com.google.common.base.Splitter	COMMA_SPLITTER
protected static java.lang.String	FILE_PATH
protected static java.lang.String	LAST_MODIFIED
protected static java.lang.String	MANIFEST
protected static java.lang.String	MANIFEST_LIST
protected static java.lang.String	OTHERS
protected static java.lang.String	STATISTICS_FILES
static java.lang.String	STREAM_RESULTS
static boolean	STREAM_RESULTS_DEFAULT

Method Summary

Modifier and Type	Method and Description
protected org.apache.spark.sql.Dataset<FileInfo>	allReachableOtherMetadataFileDS(org.apache.iceberg.Table table)
protected org.apache.spark.sql.Dataset<FileInfo>	contentFileDS(org.apache.iceberg.Table table)
protected org.apache.spark.sql.Dataset<FileInfo>	contentFileDS(org.apache.iceberg.Table table, java.util.Set<java.lang.Long> snapshotIds)
protected org.apache.iceberg.spark.actions.BaseSparkAction.DeleteSummary	deleteFiles(java.util.concurrent.ExecutorService executorService, java.util.function.Consumer<java.lang.String> deleteFunc, java.util.Iterator<FileInfo> files) Deletes files and keeps track of how many files were removed for each file type.
protected org.apache.iceberg.spark.actions.BaseSparkAction.DeleteSummary	deleteFiles(org.apache.iceberg.io.SupportsBulkOperations io, java.util.Iterator<FileInfo> files)
ExpireSnapshotsSparkAction	deleteWith(java.util.function.Consumer<java.lang.String> newDeleteFunc)
org.apache.iceberg.actions.ExpireSnapshots.Result	execute()
ExpireSnapshotsSparkAction	executeDeleteWith(java.util.concurrent.ExecutorService executorService)
org.apache.spark.sql.Dataset<FileInfo>	expireFiles() Expires snapshots and commits the changes to the table, returning a Dataset of files to delete.
ExpireSnapshotsSparkAction	expireOlderThan(long timestampMillis)
ExpireSnapshotsSparkAction	expireSnapshotId(long snapshotId)
protected org.apache.spark.sql.Dataset<org.apache.spark.sql.Row>	loadMetadataTable(org.apache.iceberg.Table table, org.apache.iceberg.MetadataTableType type)
protected org.apache.spark.sql.Dataset<FileInfo>	manifestDS(org.apache.iceberg.Table table)
protected org.apache.spark.sql.Dataset<FileInfo>	manifestDS(org.apache.iceberg.Table table, java.util.Set<java.lang.Long> snapshotIds)
protected org.apache.spark.sql.Dataset<FileInfo>	manifestListDS(org.apache.iceberg.Table table)
protected org.apache.spark.sql.Dataset<FileInfo>	manifestListDS(org.apache.iceberg.Table table, java.util.Set<java.lang.Long> snapshotIds)
protected JobGroupInfo	newJobGroupInfo(java.lang.String groupId, java.lang.String desc)
protected org.apache.iceberg.Table	newStaticTable(org.apache.iceberg.TableMetadata metadata, org.apache.iceberg.io.FileIO io)
ThisT	option(java.lang.String name, java.lang.String value)
protected java.util.Map<java.lang.String,java.lang.String>	options()
ThisT	options(java.util.Map<java.lang.String,java.lang.String> newOptions)
protected org.apache.spark.sql.Dataset<FileInfo>	otherMetadataFileDS(org.apache.iceberg.Table table)
ExpireSnapshotsSparkAction	retainLast(int numSnapshots)
protected ExpireSnapshotsSparkAction	self()
protected org.apache.spark.sql.SparkSession	spark()
protected org.apache.spark.api.java.JavaSparkContext	sparkContext()
protected org.apache.spark.sql.Dataset<FileInfo>	statisticsFileDS(org.apache.iceberg.Table table, java.util.Set<java.lang.Long> snapshotIds)
protected <T> T	withJobGroupInfo(JobGroupInfo info, java.util.function.Supplier<T> supplier)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.iceberg.actions.Action

option, options

Field Detail

STREAM_RESULTS

public static final java.lang.String STREAM_RESULTS

See Also:

Constant Field Values

STREAM_RESULTS_DEFAULT

public static final boolean STREAM_RESULTS_DEFAULT

See Also:

Constant Field Values

MANIFEST

protected static final java.lang.String MANIFEST

See Also:

Constant Field Values

MANIFEST_LIST

protected static final java.lang.String MANIFEST_LIST

See Also:

Constant Field Values

STATISTICS_FILES

protected static final java.lang.String STATISTICS_FILES

See Also:

Constant Field Values

OTHERS

protected static final java.lang.String OTHERS

See Also:

Constant Field Values

FILE_PATH

protected static final java.lang.String FILE_PATH

See Also:

Constant Field Values

LAST_MODIFIED

protected static final java.lang.String LAST_MODIFIED

See Also:

Constant Field Values

COMMA_SPLITTER

protected static final org.apache.iceberg.relocated.com.google.common.base.Splitter COMMA_SPLITTER

COMMA_JOINER

protected static final org.apache.iceberg.relocated.com.google.common.base.Joiner COMMA_JOINER

Method Detail

self

protected ExpireSnapshotsSparkAction self()

executeDeleteWith

public ExpireSnapshotsSparkAction executeDeleteWith(java.util.concurrent.ExecutorService executorService)

Specified by:

executeDeleteWith in interface org.apache.iceberg.actions.ExpireSnapshots

expireSnapshotId

public ExpireSnapshotsSparkAction expireSnapshotId(long snapshotId)

Specified by:

expireSnapshotId in interface org.apache.iceberg.actions.ExpireSnapshots

expireOlderThan

public ExpireSnapshotsSparkAction expireOlderThan(long timestampMillis)

Specified by:

expireOlderThan in interface org.apache.iceberg.actions.ExpireSnapshots

retainLast

public ExpireSnapshotsSparkAction retainLast(int numSnapshots)

Specified by:

retainLast in interface org.apache.iceberg.actions.ExpireSnapshots

deleteWith

public ExpireSnapshotsSparkAction deleteWith(java.util.function.Consumer<java.lang.String> newDeleteFunc)

Specified by:

deleteWith in interface org.apache.iceberg.actions.ExpireSnapshots

expireFiles

public org.apache.spark.sql.Dataset<FileInfo> expireFiles()

Expires snapshots and commits the changes to the table, returning a Dataset of files to delete.

This does not delete data files. To delete data files, run execute().

This may be called before or after execute() to return the expired files.

Returns:

a Dataset of files that are no longer referenced by the table

execute

public org.apache.iceberg.actions.ExpireSnapshots.Result execute()

Specified by:

execute in interface org.apache.iceberg.actions.Action<org.apache.iceberg.actions.ExpireSnapshots,org.apache.iceberg.actions.ExpireSnapshots.Result>

spark

protected org.apache.spark.sql.SparkSession spark()

sparkContext

protected org.apache.spark.api.java.JavaSparkContext sparkContext()

option

public ThisT option(java.lang.String name,
                    java.lang.String value)

options

public ThisT options(java.util.Map<java.lang.String,java.lang.String> newOptions)

options

protected java.util.Map<java.lang.String,java.lang.String> options()

withJobGroupInfo

protected <T> T withJobGroupInfo(JobGroupInfo info,
                                 java.util.function.Supplier<T> supplier)

newJobGroupInfo

protected JobGroupInfo newJobGroupInfo(java.lang.String groupId,
                                       java.lang.String desc)

newStaticTable

protected org.apache.iceberg.Table newStaticTable(org.apache.iceberg.TableMetadata metadata,
                                                  org.apache.iceberg.io.FileIO io)

contentFileDS

protected org.apache.spark.sql.Dataset<FileInfo> contentFileDS(org.apache.iceberg.Table table)

contentFileDS

protected org.apache.spark.sql.Dataset<FileInfo> contentFileDS(org.apache.iceberg.Table table,
                                                               java.util.Set<java.lang.Long> snapshotIds)

manifestDS

protected org.apache.spark.sql.Dataset<FileInfo> manifestDS(org.apache.iceberg.Table table)

manifestDS

protected org.apache.spark.sql.Dataset<FileInfo> manifestDS(org.apache.iceberg.Table table,
                                                            java.util.Set<java.lang.Long> snapshotIds)

manifestListDS

protected org.apache.spark.sql.Dataset<FileInfo> manifestListDS(org.apache.iceberg.Table table)

manifestListDS

protected org.apache.spark.sql.Dataset<FileInfo> manifestListDS(org.apache.iceberg.Table table,
                                                                java.util.Set<java.lang.Long> snapshotIds)

statisticsFileDS

protected org.apache.spark.sql.Dataset<FileInfo> statisticsFileDS(org.apache.iceberg.Table table,
                                                                  java.util.Set<java.lang.Long> snapshotIds)

otherMetadataFileDS

protected org.apache.spark.sql.Dataset<FileInfo> otherMetadataFileDS(org.apache.iceberg.Table table)

allReachableOtherMetadataFileDS

protected org.apache.spark.sql.Dataset<FileInfo> allReachableOtherMetadataFileDS(org.apache.iceberg.Table table)

loadMetadataTable

protected org.apache.spark.sql.Dataset<org.apache.spark.sql.Row> loadMetadataTable(org.apache.iceberg.Table table,
                                                                                   org.apache.iceberg.MetadataTableType type)

deleteFiles

protected org.apache.iceberg.spark.actions.BaseSparkAction.DeleteSummary deleteFiles(java.util.concurrent.ExecutorService executorService,
                                                                                     java.util.function.Consumer<java.lang.String> deleteFunc,
                                                                                     java.util.Iterator<FileInfo> files)

Deletes files and keeps track of how many files were removed for each file type.

Parameters:

executorService - an executor service to use for parallel deletes

deleteFunc - a delete func

files - an iterator of Spark rows of the structure (path: String, type: String)

Returns:

stats on which files were deleted

deleteFiles

protected org.apache.iceberg.spark.actions.BaseSparkAction.DeleteSummary deleteFiles(org.apache.iceberg.io.SupportsBulkOperations io,
                                                                                     java.util.Iterator<FileInfo> files)