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sequential index snapshot

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This commit is contained in:
mpostma 2021-03-20 11:50:57 +01:00
parent 35a7b800eb
commit 520f7c09ba
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GPG Key ID: CBC8A7C1D7A28C3A
4 changed files with 75 additions and 53 deletions
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39
meilisearch-http/src/index_controller/index_actor.rs
View File

@ -104,7 +104,7 @@ enum IndexMsg {
ret: oneshot::Sender<Result<IndexMeta>>,
},
Snapshot {
uuids: Vec<Uuid>,
uuid: Uuid,
path: PathBuf,
ret: oneshot::Sender<Result<()>>,
}
@ -256,8 +256,8 @@ impl<S: IndexStore + Sync + Send> IndexActor<S> {
} => {
let _ = ret.send(self.handle_update_index(uuid, index_settings).await);
}
Snapshot { uuids, path, ret } => {
let _ = ret.send(self.handle_snapshot(uuids, path).await);
Snapshot { uuid, path, ret } => {
let _ = ret.send(self.handle_snapshot(uuid, path).await);
}
}
}
@ -412,7 +412,7 @@ impl<S: IndexStore + Sync + Send> IndexActor<S> {
.map_err(|e| IndexError::Error(e.into()))?
}
async fn handle_snapshot(&self, uuids: Vec<Uuid>, mut path: PathBuf) -> Result<()> {
async fn handle_snapshot(&self, uuid: Uuid, mut path: PathBuf) -> Result<()> {
use tokio::fs::create_dir_all;
path.push("indexes");
@ -421,25 +421,14 @@ impl<S: IndexStore + Sync + Send> IndexActor<S> {
.await
.map_err(|e| IndexError::Error(e.into()))?;
let mut handles = Vec::new();
for uuid in uuids {
if let Some(index) = self.store.get(uuid).await? {
let index_path = path.join(format!("index-{}", uuid));
let handle = spawn_blocking(move || -> anyhow::Result<()> {
// Get write txn to wait for ongoing write transaction before snapshot.
let _txn = index.write_txn()?;
index.env.copy_to_path(index_path, CompactionOption::Enabled)?;
Ok(())
});
handles.push(handle);
}
}
for handle in handles {
handle
.await
.map_err(|e| IndexError::Error(e.into()))?
.map_err(|e| IndexError::Error(e.into()))?;
if let Some(index) = self.store.get(uuid).await? {
let index_path = path.join(format!("index-{}", uuid));
spawn_blocking(move || -> anyhow::Result<()> {
// Get write txn to wait for ongoing write transaction before snapshot.
let _txn = index.write_txn()?;
index.env.copy_to_path(index_path, CompactionOption::Enabled)?;
Ok(())
});
}
Ok(())
@ -567,10 +556,10 @@ impl IndexActorHandle {
Ok(receiver.await.expect("IndexActor has been killed")?)
}
pub async fn snapshot(&self, uuids: Vec<Uuid>, path: PathBuf) -> Result<()> {
pub async fn snapshot(&self, uuid: Uuid, path: PathBuf) -> Result<()> {
let (ret, receiver) = oneshot::channel();
let msg = IndexMsg::Snapshot {
uuids,
uuid,
path,
ret,
};

7
meilisearch-http/src/index_controller/snapshot.rs
View File

@ -50,10 +50,9 @@ impl<B> SnapshotService<B> {
.join(format!("tmp-{}", Uuid::new_v4()));
create_dir_all(&temp_snapshot_path)?;
let uuids = self.uuid_resolver_handle.snapshot(temp_snapshot_path.clone()).await?;
let index_snapshot = self.index_handle.snapshot(uuids.clone(), temp_snapshot_path.clone());
let updates_snapshot = self.update_handle.snapshot(uuids.clone(), temp_snapshot_path.clone());
let (first, second) = tokio::join!(updates_snapshot, index_snapshot);
println!("results: {:?}, {:?}", first, second);
for uuid in uuids {
self.update_handle.snapshot(uuid, temp_snapshot_path.clone()).await?;
}
Ok(())
}
}

80
meilisearch-http/src/index_controller/update_actor.rs
View File

@ -1,15 +1,16 @@
use std::collections::{hash_map::Entry, HashMap};
use std::io::SeekFrom;
use std::fs::{create_dir_all, remove_dir_all};
use std::io::SeekFrom;
use std::path::{Path, PathBuf};
use std::sync::Arc;
use super::index_actor::IndexActorHandle;
use heed::CompactionOption;
use log::info;
use oxidized_json_checker::JsonChecker;
use super::index_actor::IndexActorHandle;
use thiserror::Error;
use tokio::fs::OpenOptions;
use tokio::io::{AsyncWriteExt, AsyncSeekExt};
use tokio::io::{AsyncSeekExt, AsyncWriteExt};
use tokio::sync::{mpsc, oneshot, RwLock};
use uuid::Uuid;
@ -56,16 +57,17 @@ enum UpdateMsg<D> {
ret: oneshot::Sender<Result<()>>,
},
Snapshot {
uuids: Vec<Uuid>,
uuid: Uuid,
path: PathBuf,
ret: oneshot::Sender<Result<()>>,
}
},
}
struct UpdateActor<D, S> {
path: PathBuf,
store: S,
inbox: mpsc::Receiver<UpdateMsg<D>>,
index_handle: IndexActorHandle,
}
#[async_trait::async_trait]
@ -84,11 +86,17 @@ where
store: S,
inbox: mpsc::Receiver<UpdateMsg<D>>,
path: impl AsRef<Path>,
index_handle: IndexActorHandle,
) -> anyhow::Result<Self> {
let path = path.as_ref().to_owned().join("update_files");
create_dir_all(&path)?;
let path = path.as_ref().to_owned();
create_dir_all(path.join("update_files"))?;
assert!(path.exists());
Ok(Self { store, inbox, path })
Ok(Self {
store,
inbox,
path,
index_handle,
})
}
async fn run(mut self) {
@ -118,8 +126,8 @@ where
Some(Create { uuid, ret }) => {
let _ = ret.send(self.handle_create(uuid).await);
}
Some(Snapshot { uuids, path, ret }) => {
let _ = ret.send(self.handle_snapshot(uuids, path).await);
Some(Snapshot { uuid, path, ret }) => {
let _ = ret.send(self.handle_snapshot(uuid, path).await);
}
None => break,
}
@ -134,7 +142,9 @@ where
) -> Result<UpdateStatus> {
let update_store = self.store.get_or_create(uuid).await?;
let update_file_id = uuid::Uuid::new_v4();
let path = self.path.join(format!("update_{}", update_file_id));
let path = self
.path
.join(format!("update_files/update_{}", update_file_id));
let mut file = OpenOptions::new()
.read(true)
.write(true)
@ -167,10 +177,15 @@ where
let mut file = file.into_std().await;
tokio::task::spawn_blocking(move || {
use std::io::{BufReader, sink, copy, Seek};
use std::io::{copy, sink, BufReader, Seek};
// If the payload is empty, ignore the check.
if file.metadata().map_err(|e| UpdateError::Error(Box::new(e)))?.len() > 0 {
if file
.metadata()
.map_err(|e| UpdateError::Error(Box::new(e)))?
.len()
> 0
{
// Check that the json payload is valid:
let reader = BufReader::new(&mut file);
let mut checker = JsonChecker::new(reader);
@ -241,13 +256,32 @@ where
Ok(())
}
async fn handle_snapshot(&self, uuids: Vec<Uuid>, path: PathBuf) -> Result<()> {
use tokio::time;
use std::time::Duration;
async fn handle_snapshot(&self, uuid: Uuid, path: PathBuf) -> Result<()> {
use tokio::fs;
let update_path = path.join("updates");
fs::create_dir_all(&update_path)
.await
.map_err(|e| UpdateError::Error(e.into()))?;
let index_handle = self.index_handle.clone();
if let Some(update_store) = self.store.get(uuid).await? {
let snapshot_path = update_path.join(format!("update-{}", uuid));
tokio::task::spawn_blocking(move || -> anyhow::Result<()> {
let _txn = update_store.env.write_txn()?;
update_store
.env
.copy_to_path(&snapshot_path, CompactionOption::Enabled)?;
futures::executor::block_on(
async move { index_handle.snapshot(uuid, path).await },
)?;
Ok(())
})
.await
.map_err(|e| UpdateError::Error(e.into()))?
.map_err(|e| UpdateError::Error(e.into()))?;
}
println!("performing update snapshot");
time::sleep(Duration::from_secs(2)).await;
println!("Update snapshot done");
Ok(())
}
}
@ -268,8 +302,8 @@ where
) -> anyhow::Result<Self> {
let path = path.as_ref().to_owned().join("updates");
let (sender, receiver) = mpsc::channel(100);
let store = MapUpdateStoreStore::new(index_handle, &path, update_store_size);
let actor = UpdateActor::new(store, receiver, path)?;
let store = MapUpdateStoreStore::new(index_handle.clone(), &path, update_store_size);
let actor = UpdateActor::new(store, receiver, path, index_handle)?;
tokio::task::spawn(actor.run());
@ -323,9 +357,9 @@ impl<D> UpdateActorHandle<D> {
receiver.await.expect("update actor killed.")
}
pub async fn snapshot(&self, uuids: Vec<Uuid>, path: PathBuf) -> Result<()> {
pub async fn snapshot(&self, uuid: Uuid, path: PathBuf) -> Result<()> {
let (ret, receiver) = oneshot::channel();
let msg = UpdateMsg::Snapshot { uuids, path, ret };
let msg = UpdateMsg::Snapshot { uuid, path, ret };
let _ = self.sender.send(msg).await;
receiver.await.expect("update actor killed.")
}

2
meilisearch-http/src/index_controller/update_store.rs
View File

@ -16,7 +16,7 @@ type BEU64 = heed::zerocopy::U64<heed::byteorder::BE>;
#[derive(Clone)]
pub struct UpdateStore<M, N, E> {
env: Env,
pub env: Env,
pending_meta: Database<OwnedType<BEU64>, SerdeJson<Pending<M>>>,
pending: Database<OwnedType<BEU64>, SerdeJson<PathBuf>>,
processed_meta: Database<OwnedType<BEU64>, SerdeJson<Processed<M, N>>>,