kudu::client::KuduBloomFilterBuilder Class Reference

Builder class to help build KuduBloomFilter to be used with IN Bloom filter predicate. More...

#include <scan_predicate.h>

Public Member Functions
	KuduBloomFilterBuilder (size_t num_keys)
KuduBloomFilterBuilder &	false_positive_probability (double fpp)
KuduBloomFilterBuilder &	hash_algorithm (HashAlgorithm hash_algorithm)
KuduBloomFilterBuilder &	hash_seed (uint32_t hash_seed)
Status	Build (KuduBloomFilter **bloom_filter)

Detailed Description

Builder class to help build KuduBloomFilter to be used with IN Bloom filter predicate.

Constructor & Destructor Documentation

KuduBloomFilterBuilder()

kudu::client::KuduBloomFilterBuilder::KuduBloomFilterBuilder ( size_t num_keys )

explicit

Parameters

[in]

num_keys

Expected number of elements to be inserted in the Bloom filter.

Member Function Documentation

Build()

Status kudu::client::KuduBloomFilterBuilder::Build

(

KuduBloomFilter **

bloom_filter

)

Build a new Bloom filter to be used with IN Bloom filter predicate.

Parameters

[out]

bloom_filter

On success, the created Bloom filter raw pointer. Caller owns the Bloom filter until it's passed to KuduTable::NewInBloomFilterPredicate().

Returns

On success, Status::OK() with the created Bloom filter in bloom_filter output parameter. On failure to allocate memory or invalid arguments, corresponding error status.

false_positive_probability()

KuduBloomFilterBuilder & kudu::client::KuduBloomFilterBuilder::false_positive_probability

(

double

fpp

)

Parameters

[in]

fpp

Desired false positive probability between 0.0 and 1.0. If not provided, defaults to 0.01.

Returns

Reference to the updated object.

hash_algorithm()

KuduBloomFilterBuilder & kudu::client::KuduBloomFilterBuilder::hash_algorithm

(

HashAlgorithm

hash_algorithm

)

Parameters

[in]

hash_algorithm

Hash algorithm used to hash keys before inserting to the Bloom filter. If not provided, defaults to FAST_HASH.

Note

Currently only FAST_HASH is supported.

Returns

Reference to the updated object.

hash_seed()

KuduBloomFilterBuilder & kudu::client::KuduBloomFilterBuilder::hash_seed

(

uint32_t

hash_seed

)

Parameters

[in]

hash_seed

Seed used with hash algorithm to hash the keys before inserting to the Bloom filter. If not provided, defaults to 0.

Returns

Reference to the updated object.

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The documentation for this class was generated from the following file:

• include/kudu/client/scan_predicate.h