risingwave_stream/from_proto/
hash_agg.rs

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1// Copyright 2025 RisingWave Labs
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
15//! Streaming Hash Aggregator
16
17use std::sync::Arc;
18
19use risingwave_common::hash::{HashKey, HashKeyDispatcher};
20use risingwave_common::types::DataType;
21use risingwave_expr::aggregate::AggCall;
22use risingwave_pb::stream_plan::HashAggNode;
23
24use super::agg_common::{
25    build_agg_state_storages_from_proto, build_distinct_dedup_table_from_proto,
26};
27use super::*;
28use crate::common::table::state_table::StateTable;
29use crate::executor::aggregate::{AggExecutorArgs, HashAggExecutor, HashAggExecutorExtraArgs};
30
31pub struct HashAggExecutorDispatcherArgs<S: StateStore> {
32    args: AggExecutorArgs<S, HashAggExecutorExtraArgs>,
33    group_key_types: Vec<DataType>,
34}
35
36impl<S: StateStore> HashKeyDispatcher for HashAggExecutorDispatcherArgs<S> {
37    type Output = StreamResult<Box<dyn Execute>>;
38
39    fn dispatch_impl<K: HashKey>(self) -> Self::Output {
40        Ok(HashAggExecutor::<K, S>::new(self.args)?.boxed())
41    }
42
43    fn data_types(&self) -> &[DataType] {
44        &self.group_key_types
45    }
46}
47
48pub struct HashAggExecutorBuilder;
49
50impl ExecutorBuilder for HashAggExecutorBuilder {
51    type Node = HashAggNode;
52
53    async fn new_boxed_executor(
54        params: ExecutorParams,
55        node: &Self::Node,
56        store: impl StateStore,
57    ) -> StreamResult<Executor> {
58        let group_key_indices = node
59            .get_group_key()
60            .iter()
61            .map(|key| *key as usize)
62            .collect::<Vec<_>>();
63        let [input]: [_; 1] = params.input.try_into().unwrap();
64        let group_key_types = group_key_indices
65            .iter()
66            .map(|idx| input.schema().fields[*idx].data_type())
67            .collect_vec();
68
69        let agg_calls: Vec<AggCall> = node
70            .get_agg_calls()
71            .iter()
72            .map(AggCall::from_protobuf)
73            .try_collect()?;
74
75        let vnodes = Some(Arc::new(
76            params.vnode_bitmap.expect("vnodes not set for hash agg"),
77        ));
78        let storages = build_agg_state_storages_from_proto(
79            node.get_agg_call_states(),
80            store.clone(),
81            vnodes.clone(),
82        )
83        .await;
84        // disable sanity check so that old value is not required when updating states
85        let intermediate_state_table = StateTable::from_table_catalog(
86            node.get_intermediate_state_table().unwrap(),
87            store.clone(),
88            vnodes.clone(),
89        )
90        .await;
91        let distinct_dedup_tables =
92            build_distinct_dedup_table_from_proto(node.get_distinct_dedup_tables(), store, vnodes)
93                .await;
94
95        let exec = HashAggExecutorDispatcherArgs {
96            args: AggExecutorArgs {
97                version: node.version(),
98
99                input,
100                actor_ctx: params.actor_context,
101                info: params.info.clone(),
102
103                extreme_cache_size: params.env.config().developer.unsafe_extreme_cache_size,
104
105                agg_calls,
106                row_count_index: node.get_row_count_index() as usize,
107                storages,
108                intermediate_state_table,
109                distinct_dedup_tables,
110                watermark_epoch: params.watermark_epoch,
111                extra: HashAggExecutorExtraArgs {
112                    group_key_indices,
113                    chunk_size: params.env.config().developer.chunk_size,
114                    max_dirty_groups_heap_size: params
115                        .env
116                        .config()
117                        .developer
118                        .hash_agg_max_dirty_groups_heap_size,
119                    emit_on_window_close: node.get_emit_on_window_close(),
120                },
121            },
122            group_key_types,
123        }
124        .dispatch()?;
125        Ok((params.info, exec).into())
126    }
127}
risingwave_stream/from_proto/hash_agg.rs

risingwave_stream/from_proto/
hash_agg.rs
