Package io.deephaven.iceberg.util

Class TableParquetWriterOptions

java.lang.Object

io.deephaven.iceberg.util.TableWriterOptions

io.deephaven.iceberg.util.TableParquetWriterOptions

@Immutable
public abstract class TableParquetWriterOptions
extends TableWriterOptions

This class provides instructions for building IcebergTableWriter intended for writing Iceberg tables as Parquet data files. The default values documented in this class may change in the future. As such, callers may wish to explicitly set the values.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	TableParquetWriterOptions.Builder

Constructor Summary

Constructors

Constructor	Description
TableParquetWriterOptions()

Method Summary

Modifier and Type	Method	Description
static TableParquetWriterOptions.Builder	builder()
String	compressionCodecName()	The name of the compression codec to use when writing Parquet files; defaults to ParquetInstructions.DEFAULT_COMPRESSION_CODEC_NAME.
int	maximumDictionaryKeys()	The maximum number of unique keys the parquet file writer should add to a dictionary page before switching to non-dictionary encoding; defaults to 1048576; never evaluated for non-String columns.
int	maximumDictionarySize()	The maximum number of bytes the parquet file writer should add to a dictionary before switching to non-dictionary encoding; defaults to 1048576; never evaluated for non-String columns.
int	targetPageSize()	The target page size for writing the parquet files; defaults to ParquetInstructions.DEFAULT_TARGET_PAGE_SIZE, should be greater than or equal to ParquetInstructions.MIN_TARGET_PAGE_SIZE.

Methods inherited from class io.deephaven.iceberg.util.TableWriterOptions

dataInstructions, fieldIdToColumnName, schemaProvider, tableDefinition

Methods inherited from class java.lang.Object

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

Constructor Details

TableParquetWriterOptions

public TableParquetWriterOptions()

Method Details

builder

public static TableParquetWriterOptions.Builder builder()

compressionCodecName

@Default
public String compressionCodecName()

The name of the compression codec to use when writing Parquet files; defaults to ParquetInstructions.DEFAULT_COMPRESSION_CODEC_NAME.

maximumDictionaryKeys

@Default
public int maximumDictionaryKeys()

The maximum number of unique keys the parquet file writer should add to a dictionary page before switching to non-dictionary encoding; defaults to 1048576; never evaluated for non-String columns.

maximumDictionarySize

@Default
public int maximumDictionarySize()

The maximum number of bytes the parquet file writer should add to a dictionary before switching to non-dictionary encoding; defaults to 1048576; never evaluated for non-String columns.

targetPageSize

@Default
public int targetPageSize()

The target page size for writing the parquet files; defaults to ParquetInstructions.DEFAULT_TARGET_PAGE_SIZE, should be greater than or equal to ParquetInstructions.MIN_TARGET_PAGE_SIZE.