micropelago/garage
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Don't send items...

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...if syncer doesn't need them because he's going to delete the partition anyway.
Also, fix block resync queue
This commit is contained in:
Alex Auvolat 2020-04-17 18:51:29 +02:00
parent 4bacaaf53f
commit db1c4222ce
4 changed files with 89 additions and 40 deletions
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1
Makefile
View File

@ -1,2 +1,3 @@
all:
cargo fmt
cargo build

23
src/block.rs
View File

@ -2,11 +2,11 @@ use std::path::PathBuf;
use std::sync::Arc;
use std::time::Duration;
use arc_swap::ArcSwapOption;
use futures::stream::*;
use tokio::fs;
use tokio::prelude::*;
use tokio::sync::{watch, Mutex};
use arc_swap::ArcSwapOption;
use crate::data;
use crate::data::*;
@ -48,8 +48,7 @@ impl BlockManager {
pub async fn spawn_background_worker(self: Arc<Self>) {
let bm2 = self.clone();
self
.system
self.system
.background
.spawn_worker(move |must_exit| bm2.resync_loop(must_exit))
.await;
@ -139,7 +138,11 @@ impl BlockManager {
while !*must_exit.borrow() {
if let Some((time_bytes, hash_bytes)) = self.resync_queue.get_gt(&[])? {
let time_msec = u64_from_bytes(&time_bytes[0..8]);
eprintln!("First in resync queue: {} (now = {})", time_msec, now_msec());
eprintln!(
"First in resync queue: {} (now = {})",
time_msec,
now_msec()
);
if now_msec() >= time_msec {
let mut hash = [0u8; 32];
hash.copy_from_slice(hash_bytes.as_ref());
@ -147,7 +150,7 @@ impl BlockManager {
match self.resync_iter(&hash).await {
Ok(_) => {
self.resync_queue.remove(&hash_bytes)?;
self.resync_queue.remove(&time_bytes)?;
}
Err(e) => {
eprintln!(
@ -175,11 +178,17 @@ impl BlockManager {
.map(|x| u64_from_bytes(x.as_ref()) > 0)
.unwrap_or(false);
eprintln!("Resync block {:?}: exists {}, needed {}", hash, exists, needed);
eprintln!(
"Resync block {:?}: exists {}, needed {}",
hash, exists, needed
);
if exists && !needed {
let garage = self.garage.load_full().unwrap();
let active_refs = garage.block_ref_table.get_range(&hash, &[0u8; 32].into(), Some(()), 1).await?;
let active_refs = garage
.block_ref_table
.get_range(&hash, &[0u8; 32].into(), Some(()), 1)
.await?;
let needed_by_others = !active_refs.is_empty();
if needed_by_others {
// TODO check they have it and send it if not

43
src/table.rs
View File

@ -1,12 +1,12 @@
use std::collections::{HashMap, BTreeMap};
use std::collections::{BTreeMap, HashMap};
use std::sync::Arc;
use std::time::Duration;
use arc_swap::ArcSwapOption;
use async_trait::async_trait;
use futures::stream::*;
use serde::{Deserialize, Serialize};
use serde_bytes::ByteBuf;
use arc_swap::ArcSwapOption;
use crate::data::*;
use crate::error::Error;
@ -122,7 +122,9 @@ pub trait TableSchema: Send + Sync {
type Filter: Clone + Serialize + for<'de> Deserialize<'de> + Send + Sync;
async fn updated(&self, old: Option<Self::E>, new: Option<Self::E>);
fn matches_filter(_entry: &Self::E, _filter: &Self::Filter) -> bool { true }
fn matches_filter(_entry: &Self::E, _filter: &Self::Filter) -> bool {
true
}
}
impl<F: TableSchema + 'static> Table<F> {
@ -244,9 +246,7 @@ impl<F: TableSchema + 'static> Table<F> {
let ent2 = ret_entry.clone();
self.system
.background
.spawn(async move {
self2.repair_on_read(&who[..], ent2).await
});
.spawn(async move { self2.repair_on_read(&who[..], ent2).await });
}
}
Ok(ret)
@ -263,7 +263,8 @@ impl<F: TableSchema + 'static> Table<F> {
let ring = self.system.ring.borrow().clone();
let who = ring.walk_ring(&hash, self.param.replication_factor);
let rpc = &TableRPC::<F>::ReadRange(partition_key.clone(), begin_sort_key.clone(), filter, limit);
let rpc =
&TableRPC::<F>::ReadRange(partition_key.clone(), begin_sort_key.clone(), filter, limit);
let resps = self
.rpc_try_call_many(&who[..], &rpc, self.param.read_quorum)
.await?;
@ -273,7 +274,8 @@ impl<F: TableSchema + 'static> Table<F> {
for resp in resps {
if let TableRPC::Update(entries) = resp {
for entry_bytes in entries.iter() {
let entry = rmp_serde::decode::from_read_ref::<_, F::E>(entry_bytes.as_slice())?;
let entry =
rmp_serde::decode::from_read_ref::<_, F::E>(entry_bytes.as_slice())?;
let entry_key = self.tree_key(entry.partition_key(), entry.sort_key());
match ret.remove(&entry_key) {
None => {
@ -294,16 +296,18 @@ impl<F: TableSchema + 'static> Table<F> {
}
if !to_repair.is_empty() {
let self2 = self.clone();
self.system
.background
.spawn(async move {
for (_, v) in to_repair.iter_mut() {
self2.repair_on_read(&who[..], v.take().unwrap()).await?;
}
Ok(())
});
self.system.background.spawn(async move {
for (_, v) in to_repair.iter_mut() {
self2.repair_on_read(&who[..], v.take().unwrap()).await?;
}
Ok(())
});
}
let ret_vec = ret.iter_mut().take(limit).map(|(_k, v)| v.take().unwrap()).collect::<Vec<_>>();
let ret_vec = ret
.iter_mut()
.take(limit)
.map(|(_k, v)| v.take().unwrap())
.collect::<Vec<_>>();
Ok(ret_vec)
}
@ -408,7 +412,10 @@ impl<F: TableSchema + 'static> Table<F> {
}
}
pub async fn handle_update(self: &Arc<Self>, mut entries: Vec<Arc<ByteBuf>>) -> Result<(), Error> {
pub async fn handle_update(
self: &Arc<Self>,
mut entries: Vec<Arc<ByteBuf>>,
) -> Result<(), Error> {
for update_bytes in entries.drain(..) {
let update = rmp_serde::decode::from_read_ref::<_, F::E>(update_bytes.as_slice())?;

62
src/table_sync.rs
View File

@ -29,7 +29,7 @@ pub struct TableSyncer<F: TableSchema> {
#[derive(Serialize, Deserialize)]
pub enum SyncRPC {
Checksums(Vec<RangeChecksum>),
Checksums(Vec<RangeChecksum>, bool),
Difference(Vec<SyncRange>, Vec<Arc<ByteBuf>>),
}
@ -179,8 +179,12 @@ impl<F: TableSchema + 'static> TableSyncer<F> {
.iter()
.filter(|node| **node != my_id)
.map(|node| {
self.clone()
.do_sync_with(root_cks.clone(), node.clone(), must_exit.clone())
self.clone().do_sync_with(
root_cks.clone(),
node.clone(),
partition.retain,
must_exit.clone(),
)
})
.collect::<FuturesUnordered<_>>();
@ -344,6 +348,7 @@ impl<F: TableSchema + 'static> TableSyncer<F> {
self: Arc<Self>,
root_ck: RangeChecksum,
who: UUID,
retain: bool,
mut must_exit: watch::Receiver<bool>,
) -> Result<(), Error> {
let mut todo = VecDeque::new();
@ -364,10 +369,21 @@ impl<F: TableSchema + 'static> TableSyncer<F> {
let rpc_resp = self
.table
.rpc_call(&who, &TableRPC::<F>::SyncRPC(SyncRPC::Checksums(step)))
.rpc_call(
&who,
&TableRPC::<F>::SyncRPC(SyncRPC::Checksums(step, retain)),
)
.await?;
if let TableRPC::<F>::SyncRPC(SyncRPC::Difference(mut diff_ranges, diff_items)) = rpc_resp {
eprintln!("({}) Sync with {:?}: difference {} ranges, {} items", self.table.name, who, diff_ranges.len(), diff_items.len());
if let TableRPC::<F>::SyncRPC(SyncRPC::Difference(mut diff_ranges, diff_items)) =
rpc_resp
{
eprintln!(
"({}) Sync with {:?}: difference {} ranges, {} items",
self.table.name,
who,
diff_ranges.len(),
diff_items.len()
);
let mut items_to_send = vec![];
for differing in diff_ranges.drain(..) {
if differing.level == 0 {
@ -377,7 +393,7 @@ impl<F: TableSchema + 'static> TableSyncer<F> {
todo.push_back(checksum);
}
}
if diff_items.len() > 0 {
if retain && diff_items.len() > 0 {
self.table.handle_update(diff_items).await?;
}
if items_to_send.len() > 0 {
@ -429,7 +445,7 @@ impl<F: TableSchema + 'static> TableSyncer<F> {
message: &SyncRPC,
mut must_exit: watch::Receiver<bool>,
) -> Result<SyncRPC, Error> {
if let SyncRPC::Checksums(checksums) = message {
if let SyncRPC::Checksums(checksums, retain) = message {
let mut ret_ranges = vec![];
let mut ret_items = vec![];
for ckr in checksums.iter() {
@ -437,7 +453,12 @@ impl<F: TableSchema + 'static> TableSyncer<F> {
for (range, hash) in ckr.children.iter() {
// Only consider items that are in the intersection of the two ranges
// (other ranges will be exchanged at some point)
if our_ckr.found_limit.as_ref().map(|x| range.begin.as_slice() >= x.as_slice()).unwrap_or(false) {
if our_ckr
.found_limit
.as_ref()
.map(|x| range.begin.as_slice() >= x.as_slice())
.unwrap_or(false)
{
break;
}
@ -450,15 +471,22 @@ impl<F: TableSchema + 'static> TableSyncer<F> {
};
if differs {
ret_ranges.push(range.clone());
if range.level == 0 {
if let Some(item_bytes) = self.table.store.get(range.begin.as_slice())? {
if *retain && range.level == 0 {
if let Some(item_bytes) =
self.table.store.get(range.begin.as_slice())?
{
ret_items.push(Arc::new(ByteBuf::from(item_bytes.to_vec())));
}
}
}
}
for (range, _hash) in our_ckr.children.iter() {
if ckr.found_limit.as_ref().map(|x| range.begin.as_slice() >= x.as_slice()).unwrap_or(false) {
if ckr
.found_limit
.as_ref()
.map(|x| range.begin.as_slice() >= x.as_slice())
.unwrap_or(false)
{
break;
}
@ -467,9 +495,13 @@ impl<F: TableSchema + 'static> TableSyncer<F> {
.binary_search_by(|(their_range, _)| their_range.begin.cmp(&range.begin))
.is_err();
if not_present {
ret_ranges.push(range.clone());
if range.level == 0 {
if let Some(item_bytes) = self.table.store.get(range.begin.as_slice())? {
if range.level > 0 {
ret_ranges.push(range.clone());
}
if *retain && range.level == 0 {
if let Some(item_bytes) =
self.table.store.get(range.begin.as_slice())?
{
ret_items.push(Arc::new(ByteBuf::from(item_bytes.to_vec())));
}
}