Replication refactor part 7 (#1550)

* Split queries into system and data queries
* System queries are sequentially executed and generate separate transaction deltas
* System transaction try locks for 100ms
* last_commited_system_ts saved to DBMS durability
* Replicating CREATE/DROP DATABASE
* Sending a system snapshot if REPLICA behind
* Passing a copy of the gatekeeper::access as std::any to all functions that could call an async execution
* Removed delete_on_drop flag (we now always delete on drop)
* Using UUID as the directory name for databases
* DBMS durability update (added versioning and salient information)
* Automatic migration from previous version
* Interpreter can run some queries without a target database
* SHOW REPLICA returns the status of the currently active DB
* Returning UUID instead of db name in the RPC responses
* Using UUIDs for database specification in RPC (not name)
* FrequentCheck forces update on reconnect
* TimestampRpc will detect if a replica is behind, and will update client's state
* Safer SLK reads
* Split SHOW DATABASES in two SHOW DATABASES (list of current databases) and SHOW DATABASE a single string naming the current database

---------

Co-authored-by: Gareth Lloyd <gareth.lloyd@memgraph.io>
This commit is contained in:
andrejtonev
2024-01-23 12:06:10 +01:00
committed by GitHub
parent 7f10636470
commit 071df2f439
154 changed files with 4896 additions and 1390 deletions

View File

@@ -707,12 +707,11 @@ int main(int argc, char *argv[]) {
std::unordered_map<NodeId, memgraph::storage::Gid> node_id_map;
memgraph::storage::Config config{
.items = {.properties_on_edges = FLAGS_storage_properties_on_edges},
.durability = {.storage_directory = FLAGS_data_directory,
.recover_on_startup = false,
.snapshot_wal_mode = memgraph::storage::Config::Durability::SnapshotWalMode::DISABLED,
.snapshot_on_exit = true},
.salient = {.items = {.properties_on_edges = FLAGS_storage_properties_on_edges}},
};
memgraph::replication::ReplicationState repl_state{memgraph::storage::ReplicationStateRootPath(config)};
auto store = memgraph::dbms::CreateInMemoryStorage(config, repl_state);