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Gc cutoff rwlock (#1139)

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* Reproduce github issue #1047.

* Use RwLock to protect gc_cuttof_lsn

* Eeduce number of updates in test_gc_aggressive

* Change  test_prohibit_get_page_at_lsn_for_garbage_collected_pages test

* Change  test_prohibit_get_page_at_lsn_for_garbage_collected_pages

* Lock latest_gc_cutoff_lsn in all operations accessing storage to prevent race conditions with GC

* Remove random sleep between wait_for_lsn and get_page_at_lsn

* Initialize latest_gc_cutoff with initdb_lsn and remove separate check that lsn >= initdb_lsn

* Update test_prohibit_branch_creation_on_pre_initdb_lsn test

Co-authored-by: Heikki Linnakangas <heikki@zenith.tech>
This commit is contained in:
Konstantin Knizhnik
2022-01-27 14:41:16 +03:00
committed by GitHub
parent c44695f34b
commit 79f0e44a20
5 changed files with 152 additions and 45 deletions
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4
zenith_utils/src/postgres_backend.rs
View File

@@ -366,6 +366,10 @@ impl PostgresBackend {
AuthType::Trust => {
self.write_message_noflush(&BeMessage::AuthenticationOk)?
.write_message_noflush(&BeParameterStatusMessage::encoding())?
// The async python driver requires a valid server_version
.write_message_noflush(&BeMessage::ParameterStatus(
BeParameterStatusMessage::ServerVersion("14.1"),
))?
.write_message(&BeMessage::ReadyForQuery)?;
self.state = ProtoState::Established;
}