risingwave_meta/hummock/manager/
worker.rs

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
15use risingwave_hummock_sdk::HummockVersionId;
16use risingwave_pb::common::WorkerType;
17use sync_point::sync_point;
18use thiserror_ext::AsReport;
19use tokio::task::JoinHandle;
20
21use crate::hummock::{HummockManager, HummockManagerRef};
22use crate::manager::LocalNotification;
23
24pub type HummockManagerEventSender = tokio::sync::mpsc::UnboundedSender<HummockManagerEvent>;
25pub type HummockManagerEventReceiver = tokio::sync::mpsc::UnboundedReceiver<HummockManagerEvent>;
26
27pub enum HummockManagerEvent {
28    DropSafePoint(HummockVersionId),
29    #[allow(dead_code)]
30    Shutdown,
31}
32
33impl HummockManager {
34    pub async fn start_worker(
35        self: &HummockManagerRef,
36        mut receiver: HummockManagerEventReceiver,
37    ) -> JoinHandle<()> {
38        let (local_notification_tx, mut local_notification_rx) =
39            tokio::sync::mpsc::unbounded_channel();
40        self.env
41            .notification_manager()
42            .insert_local_sender(local_notification_tx)
43            .await;
44        let hummock_manager = self.clone();
45        tokio::spawn(async move {
46            loop {
47                tokio::select! {
48                    notification = local_notification_rx.recv() => {
49                        match notification {
50                            Some(notification) => {
51                                hummock_manager
52                                    .handle_local_notification(notification)
53                                    .await;
54                            }
55                            None => {
56                                return;
57                            }
58                        }
59                    }
60                    hummock_manager_event = receiver.recv() => {
61                        match hummock_manager_event {
62                            Some(hummock_manager_event) => {
63                                if !hummock_manager
64                                    .handle_hummock_manager_event(hummock_manager_event)
65                                    .await {
66                                    return;
67                                }
68                            }
69                            None => {
70                                return;
71                            }
72                        }
73                    }
74                }
75            }
76        })
77    }
78
79    /// Returns false indicates to shutdown worker
80    async fn handle_hummock_manager_event(&self, event: HummockManagerEvent) -> bool {
81        match event {
82            HummockManagerEvent::DropSafePoint(id) => {
83                self.unregister_safe_point(id).await;
84                sync_point!("UNREGISTER_HUMMOCK_VERSION_SAFE_POINT");
85            }
86            HummockManagerEvent::Shutdown => {
87                tracing::info!("Hummock manager worker is stopped");
88                return false;
89            }
90        }
91        true
92    }
93
94    async fn handle_local_notification(&self, notification: LocalNotification) {
95        if let LocalNotification::WorkerNodeDeleted(worker_node) = notification {
96            if worker_node.get_type().unwrap() == WorkerType::Compactor {
97                self.compactor_manager.remove_compactor(worker_node.id);
98            }
99            self.release_contexts(vec![worker_node.id])
100                .await
101                .unwrap_or_else(|err| {
102                    panic!(
103                        "Failed to release hummock context {}, error={}",
104                        worker_node.id,
105                        err.as_report()
106                    )
107                });
108            tracing::info!("Released hummock context {}", worker_node.id);
109            sync_point!("AFTER_RELEASE_HUMMOCK_CONTEXTS_ASYNC");
110        }
111    }
112}
risingwave_meta/hummock/manager/worker.rs

risingwave_meta/hummock/manager/
worker.rs
