Package org.apache.druid.indexer.partitions

Class DimensionRangePartitionsSpec

java.lang.Object

org.apache.druid.indexer.partitions.DimensionRangePartitionsSpec

All Implemented Interfaces:

DimensionBasedPartitionsSpec, PartitionsSpec

Direct Known Subclasses:

SingleDimensionPartitionsSpec

public class DimensionRangePartitionsSpec
extends Object
implements DimensionBasedPartitionsSpec

Spec to create partitions based on value ranges of multiple dimensions.

A MultiDimensionPartitionSpec has the following fields:

• either targetRowsPerSegment or maxRowsPerSegment
• partitionDimensions: List of dimension names to be used for partitioning
• assumeGrouped: true if input data has already been grouped on time and dimensions

Field Summary

Fields

Modifier and Type	Field	Description
static String	NAME

Fields inherited from interface org.apache.druid.indexer.partitions.DimensionBasedPartitionsSpec

ASSUME_GROUPED, FORCE_GUARANTEED_ROLLUP_COMPATIBLE, MAX_PARTITION_SIZE, PARTITION_DIMENSIONS, TARGET_PARTITION_SIZE, TARGET_ROWS_PER_SEGMENT

Fields inherited from interface org.apache.druid.indexer.partitions.PartitionsSpec

DEFAULT_MAX_ROWS_PER_SEGMENT, HISTORICAL_NULL, MAX_ROWS_PER_SEGMENT

Constructor Summary

Constructors

Constructor	Description
DimensionRangePartitionsSpec(Integer targetRowsPerSegment, Integer maxRowsPerSegment, List<String> partitionDimensions, boolean assumeGrouped)

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object o)
String	getForceGuaranteedRollupIncompatiblityReason()
@NotNull Integer	getMaxRowsPerSegment()	Returns the max number of rows per segment.
protected Integer	getMaxRowsPerSegmentForJson()
List<String>	getPartitionDimensions()
Integer	getTargetRowsPerSegment()
SecondaryPartitionType	getType()
int	hashCode()
boolean	isAssumeGrouped()
boolean	needsDeterminePartitions(boolean useForHadoopTask)	Returns true if this partitionsSpec needs to determine the number of partitions to start data ingestion.
String	toString()

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.druid.indexer.partitions.PartitionsSpec

isForceGuaranteedRollupCompatible, isForceGuaranteedRollupCompatibleType

Field Detail

NAME

public static final String NAME

See Also:

Constant Field Values

Constructor Detail

DimensionRangePartitionsSpec

public DimensionRangePartitionsSpec(@Nullable
                                    Integer targetRowsPerSegment,
                                    @Nullable
                                    Integer maxRowsPerSegment,
                                    List<String> partitionDimensions,
                                    boolean assumeGrouped)

Method Detail

getTargetRowsPerSegment

@Nullable
public Integer getTargetRowsPerSegment()

Specified by:

getTargetRowsPerSegment in interface DimensionBasedPartitionsSpec

getType

public SecondaryPartitionType getType()

Specified by:

getType in interface PartitionsSpec

getMaxRowsPerSegment

@NotNull
public @NotNull Integer getMaxRowsPerSegment()

Description copied from interface: PartitionsSpec

Returns the max number of rows per segment. Implementations can have different default values which it could be even null. Callers should use the right value depending on the context if this returns null.

Specified by:

getMaxRowsPerSegment in interface PartitionsSpec

Returns:

Resolved value of max rows per segment.

getMaxRowsPerSegmentForJson

protected Integer getMaxRowsPerSegmentForJson()

isAssumeGrouped

public boolean isAssumeGrouped()

getPartitionDimensions

public List<String> getPartitionDimensions()

Specified by:

getPartitionDimensions in interface DimensionBasedPartitionsSpec

getForceGuaranteedRollupIncompatiblityReason

public String getForceGuaranteedRollupIncompatiblityReason()

Specified by:

getForceGuaranteedRollupIncompatiblityReason in interface PartitionsSpec

Returns:

Message describing why this partitionSpec is incompatible with forceGuaranteedRollup=true. Empty string if the partitionSpec is compatible.

needsDeterminePartitions

public boolean needsDeterminePartitions(boolean useForHadoopTask)

Description copied from interface: PartitionsSpec

Returns true if this partitionsSpec needs to determine the number of partitions to start data ingestion. It should usually return true if perfect rollup is enforced but number of partitions is not specified.

Specified by:

needsDeterminePartitions in interface PartitionsSpec

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object