org.apache.kudu.client

Class RangePartitionWithCustomHashSchema

java.lang.Object

org.apache.kudu.client.RangePartition

org.apache.kudu.client.RangePartitionWithCustomHashSchema

@InterfaceAudience.Public
 @InterfaceStability.Evolving
public class RangePartitionWithCustomHashSchema
extends org.apache.kudu.client.RangePartition

This class represents a range partition with custom hash bucketing schema. See also RangePartition.

Constructor Summary

Constructors

Constructor and Description
RangePartitionWithCustomHashSchema(PartialRow lowerBound, PartialRow upperBound, RangePartitionBound lowerBoundType, RangePartitionBound upperBoundType)

Method Summary

Modifier and Type	Method and Description
org.apache.kudu.client.RangePartition	addHashPartitions(List<String> columns, int numBuckets, int seed) Add a level of hash sub-partitioning for this range partition.
org.apache.kudu.Common.PartitionSchemaPB.RangeWithHashSchemaPB	toPB()

Methods inherited from class org.apache.kudu.client.RangePartition

getLowerBound, getLowerBoundType, getUpperBound, getUpperBoundType

Methods inherited from class java.lang.Object

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

Constructor Detail

RangePartitionWithCustomHashSchema

public RangePartitionWithCustomHashSchema(PartialRow lowerBound,
                                          PartialRow upperBound,
                                          RangePartitionBound lowerBoundType,
                                          RangePartitionBound upperBoundType)

Parameters:

lowerBound - upper bound of the range partition

upperBound - lower bound of the range partition

lowerBoundType - lower bound type: inclusive/exclusive

upperBoundType - upper bound type: inclusive/exclusive

Method Detail

addHashPartitions

public org.apache.kudu.client.RangePartition addHashPartitions(List<String> columns,
                                                               int numBuckets,
                                                               int seed)

Add a level of hash sub-partitioning for this range partition. The hash schema for the range partition is defined by the whole set of its hash sub-partitioning levels. A range partition can have zero or multiple levels of hash sub-partitioning: this method can be called many times on the same object to define a multi-dimensional hash bucketing structure for the range.

Parameters:

columns - name of table's columns to use for hash bucketing

numBuckets - number of buckets used by the hash function

seed - the seed for the hash function

Returns:

this RangePartition object modified accordingly

toPB

public org.apache.kudu.Common.PartitionSchemaPB.RangeWithHashSchemaPB toPB()