org.apache.iceberg.actions

Interface ConvertEqualityDeleteStrategy

public interface ConvertEqualityDeleteStrategy

A strategy for the action to convert equality delete to position deletes.

Method Summary

Modifier and Type	Method and Description
java.lang.Iterable<DeleteFile>	convertDeleteFiles(java.lang.Iterable<DeleteFile> deleteFilesToConvert) Define how to convert the deletes.
java.lang.String	name() Returns the name of this convert deletes strategy
RewritePositionDeleteStrategy	options(java.util.Map<java.lang.String,java.lang.String> options) Sets options to be used with this strategy
java.lang.Iterable<java.lang.Iterable<FileScanTask>>	planDeleteFileGroups(java.lang.Iterable<FileScanTask> dataFiles) Groups delete files into lists which will be processed in a single executable unit.
java.lang.Iterable<DeleteFile>	selectDeleteFiles(java.lang.Iterable<DeleteFile> deleteFiles) Select the delete files to convert.
Table	table() Returns the table being modified by this convert strategy
java.util.Set<java.lang.String>	validOptions() Returns a set of options which this convert strategy can use.

Method Detail

name

java.lang.String name()

Returns the name of this convert deletes strategy

table

Table table()

Returns the table being modified by this convert strategy

validOptions

java.util.Set<java.lang.String> validOptions()

Returns a set of options which this convert strategy can use. This is an allowed-list and any options not specified here will be rejected at runtime.

options

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

Sets options to be used with this strategy

selectDeleteFiles

java.lang.Iterable<DeleteFile> selectDeleteFiles(java.lang.Iterable<DeleteFile> deleteFiles)

Select the delete files to convert.

Parameters:

deleteFiles - iterable of delete files in a group.

Returns:

iterable of original delete file to be converted.

planDeleteFileGroups

java.lang.Iterable<java.lang.Iterable<FileScanTask>> planDeleteFileGroups(java.lang.Iterable<FileScanTask> dataFiles)

Groups delete files into lists which will be processed in a single executable unit. Each group will end up being committed as an independent set of changes. This creates the jobs which will eventually be run as by the underlying Action.

Parameters:

dataFiles - iterable of data files that contain the DeleteFile to be converted

Returns:

iterable of lists of FileScanTasks which will be processed together

convertDeleteFiles

java.lang.Iterable<DeleteFile> convertDeleteFiles(java.lang.Iterable<DeleteFile> deleteFilesToConvert)

Define how to convert the deletes.

Parameters:

deleteFilesToConvert - a group of files to be converted together

Returns:

iterable of delete files used to replace the original delete files.