io.druid.segment

Class IndexSpec

java.lang.Object

io.druid.segment.IndexSpec

public class IndexSpec
extends Object

IndexSpec defines segment storage format options to be used at indexing time, such as bitmap type, and column compression formats. IndexSpec is specified as part of the TuningConfig for the corresponding index task.

Field Summary

Fields

Modifier and Type	Field and Description
static String	DEFAULT_DIMENSION_COMPRESSION
static String	DEFAULT_METRIC_COMPRESSION
static String	UNCOMPRESSED

Constructor Summary

Constructors

Constructor and Description
IndexSpec() Creates an IndexSpec with default parameters
IndexSpec(BitmapSerdeFactory bitmapSerdeFactory, String dimensionCompression, String metricCompression) Creates an IndexSpec with the given storage format settings.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(Object o)
BitmapSerdeFactory	getBitmapSerdeFactory()
String	getDimensionCompression()
CompressedObjectStrategy.CompressionStrategy	getDimensionCompressionStrategy()
String	getMetricCompression()
CompressedObjectStrategy.CompressionStrategy	getMetricCompressionStrategy()
int	hashCode()

Methods inherited from class java.lang.Object

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

Field Detail

UNCOMPRESSED

public static final String UNCOMPRESSED

See Also:

Constant Field Values

DEFAULT_METRIC_COMPRESSION

public static final String DEFAULT_METRIC_COMPRESSION

DEFAULT_DIMENSION_COMPRESSION

public static final String DEFAULT_DIMENSION_COMPRESSION

Constructor Detail

IndexSpec

public IndexSpec()

Creates an IndexSpec with default parameters

IndexSpec

public IndexSpec(BitmapSerdeFactory bitmapSerdeFactory,
         String dimensionCompression,
         String metricCompression)

Creates an IndexSpec with the given storage format settings.

Parameters:

bitmapSerdeFactory - type of bitmap to use (e.g. roaring or concise), null to use the default. Defaults to the bitmap type specified by the (deprecated) "druid.processing.bitmap.type" setting, or, if none was set, uses the default @{link BitmapSerde.DefaultBitmapSerdeFactory}

dimensionCompression - compression format for dimension columns. The default, null, means no compression

metricCompression - compression format for metric columns, null to use the default. Defaults to @{link CompressedObjectStrategy.DEFAULT_COMPRESSION_STRATEGY}

Method Detail

getBitmapSerdeFactory

public BitmapSerdeFactory getBitmapSerdeFactory()

getDimensionCompression

public String getDimensionCompression()

getMetricCompression

public String getMetricCompression()

getMetricCompressionStrategy

public CompressedObjectStrategy.CompressionStrategy getMetricCompressionStrategy()

getDimensionCompressionStrategy

public CompressedObjectStrategy.CompressionStrategy getDimensionCompressionStrategy()

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object