query/options.rs
1// Copyright 2023 Greptime Team
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7// http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15use serde::{Deserialize, Serialize};
16
17/// Query engine config
18#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
19#[serde(default)]
20pub struct QueryOptions {
21 /// Parallelism of query engine. Default to 0, which implies the number of logical CPUs.
22 pub parallelism: usize,
23 /// Whether to allow query fallback when push down fails.
24 pub allow_query_fallback: bool,
25}
26
27#[allow(clippy::derivable_impls)]
28impl Default for QueryOptions {
29 fn default() -> Self {
30 Self {
31 parallelism: 0,
32 allow_query_fallback: false,
33 }
34 }
35}