Package org.apache.druid.indexer.partitions

Enum SecondaryPartitionType

java.lang.Object

java.lang.Enum<SecondaryPartitionType>

org.apache.druid.indexer.partitions.SecondaryPartitionType

All Implemented Interfaces:

Serializable, Comparable<SecondaryPartitionType>

public enum SecondaryPartitionType
extends Enum<SecondaryPartitionType>

In Druid, ingested data are primarily partitioned based on time range (@link GranularitySpec#getSegmentGranularity), and then secondly partitioned based on the given PartitionsSpec. This enum lists all supported types for the secondary partitioning.

Enum Constant Summary

Enum Constants

Enum Constant	Description
HASH	Hash partitioning partitions segments in the same time chunk based on the hash value of the partition dimensions.
LINEAR	Linear partitioning partitions segments in the same time chunk based on their size or number of rows in them.
RANGE	Range partitioning partitions segments in the same time chunk based on the value range of the partition dimension.

Method Summary

Modifier and Type	Method	Description
static SecondaryPartitionType	valueOf(String name)	Returns the enum constant of this type with the specified name.
static SecondaryPartitionType[]	values()	Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

LINEAR

public static final SecondaryPartitionType LINEAR

Linear partitioning partitions segments in the same time chunk based on their size or number of rows in them.

See Also:

• DynamicPartitionsSpec
• NumberedShardSpec

HASH

public static final SecondaryPartitionType HASH

Hash partitioning partitions segments in the same time chunk based on the hash value of the partition dimensions.

See Also:

• HashedPartitionsSpec
• HashBasedNumberedShardSpec

RANGE

public static final SecondaryPartitionType RANGE

Range partitioning partitions segments in the same time chunk based on the value range of the partition dimension.

See Also:

• DimensionRangePartitionsSpec
• DimensionRangeShardSpec

Method Details

values

public static SecondaryPartitionType[] values()

Returns an array containing the constants of this enum type, in the order they are declared.

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static SecondaryPartitionType valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null