rust/neon
1
0
Fork 0
mirror of https://github.com/neondatabase/neon.git synced 2026-05-16 12:40:36 +00:00
Code Issues Packages Projects Releases Wiki Activity

Hold CLOG for prepared transactions

Browse Source
This commit is contained in:
Konstantin Knizhnik
2021-07-13 14:24:12 +03:00
parent 46e613f423
commit 386403dcd1
1 changed files with 10 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
pageserver/src/object_repository.rs
View File

@@ -621,7 +621,7 @@ impl Timeline for ObjectTimeline {
if let Some(horizon) = last_lsn.checked_sub(horizon) {
// WAL is large enough to perform GC
let now = Instant::now();
let mut prepared_horizon = Lsn(u64::MAX);
// Iterate through all objects in timeline
for obj in self
.obj_store
@@ -636,10 +636,11 @@ impl Timeline for ObjectTimeline {
tag: obj,
};
for vers in self.obj_store.object_versions(&key, horizon)? {
let lsn = vers.0;
prepared_horizon = Lsn::min(lsn, prepared_horizon);
if self.get_tx_status(prepare.xid, horizon)?
!= pg_constants::TRANSACTION_STATUS_IN_PROGRESS
{
let lsn = vers.0;
self.obj_store.unlink(&key, lsn)?;
result.prep_deleted += 1;
}
@@ -687,7 +688,9 @@ impl Timeline for ObjectTimeline {
if last_version {
result.truncated += 1;
last_version = false;
if let Some(rel_size) = self.relsize_get_nowait(tag.rel, last_lsn)? {
if let Some(rel_size) =
self.relsize_get_nowait(tag.rel, last_lsn)?
{
if rel_size > tag.blknum {
// preserve and materialize last version before deleting all preceeding
self.get_page_at_lsn_nowait(obj, lsn)?;
@@ -719,7 +722,10 @@ impl Timeline for ObjectTimeline {
timeline: self.timelineid,
tag: obj,
};
for vers in self.obj_store.object_versions(&key, horizon)? {
for vers in self
.obj_store
.object_versions(&key, Lsn::min(prepared_horizon, horizon))?
{
let lsn = vers.0;
if last_version {
let content = vers.1;