// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

syntax = "proto2";

package quickstep.serialization;

message BloomFilter {
  // The default values were determined from empirical experiments.
  // These values control the amount of false positivity that
  // is expected from Bloom Filter.
  // - Default seed for initializing family of hashes = 0xA5A5A5A55A5A5A5A.
  // - Default bloom filter size = 10 KB.
  // - Default number of hash functions used in bloom filter = 5.
  optional fixed64 bloom_filter_seed = 1 [default = 0xA5A5A5A55A5A5A5A];
  optional uint32 bloom_filter_size = 2 [default = 10000];
  optional uint32 number_of_hashes = 3 [default = 5];
}