* Interpreter transaction ID decoupled from storage transaction ID
* Transactional scope for indices, statistics and constraints
* Storage::Accessor now has 2 modes (unique and shared)
* Introduced ResourceLock to fix pthread mutex problems
* Split InfoQuery in two: non-transactional SystemInfoQuery and transactional DatabaseInfoQuery
* Replicable and durable statistics
* Bumped WAL/Snapshot versions
* Initial implementation of the Lamport clock
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Co-authored-by: Andreja Tonev <andreja.tonev@memgraph.io>
Unique/global InterpreterContext that is Storage agnostic (has a reference to the DbmsHandler instead)
* InterpreterContext is no longer the owner of Storage
* New Database structure that handles Storage, Triggers, Streams
* Renamed SessinContextHandler to DbmsHandler and simplified the multi-tenant logic
* Added Gatekeeper and updated handlers to use it
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Co-authored-by: Gareth Lloyd <gareth.lloyd@memgraph.io>
It is possible for multiple read only queries to be accessing the same
sequence of vertices/edges. The reader mode of the spin lock will ensure
multiple threads can make progress at the same time.
Add timestamp to DELETE_DESERIALIZED_OBJECT delta at which this object was created.
RocksDB currently doesn't provide timestamp() functionality in iterators of TransationDB.
Because of that we are using constant "0" timestamp for DELETE_DESERIALIZED_OBJECT.
Add supernode vertex cache to account for long delta chains and modifications in the same module being independent of scanning of the nodes in the next iteration of the pulling mechanism.
The parallel_exec_info should have been passed to this function before,
otherwise, the recovery of label-property indices would never have been
parallelized.
* Decouple BoltSession and communication::bolt::Session
* Add CREATE/USE/DROP DATABASE
* Add SHOW DATABASES
* Cover WebSocket session
* Simple session safety implemented via RWLock
* Storage symlinks for backward. compatibility
* Extend the audit log with the DB info
* Add auth part
* Add tenant recovery
* Parallelize edge recovery
* Load vertex labels and properties parallel
* Add parallel connectivity loading
* Add batches information to snapshot
* Introduce `items_per_batch` and `recovery_thread_count` flags
* Make possible to load snapshots with old version
* Add vertex batches to `RecoveryInfo`
* Extend durability integration tests with v15 test cases
* Add `std::vector` based `InitProperties`
* Use `InitProperties` in snapshot loading
* Added check if there is invalid reference to the underlying edge
* Added fix and e2e tests
* Isolation levels tracking based on from_vertex_
* Added explicit transaction test + edge accessor changes based on the vertex_edge
* Autocommit on tests, initialize deleted by checking out_edges
Co-authored-by: Marko Budiselić <marko.budiselic@memgraph.com>
Add a report for the case where a sync replica does not confirm within a timeout:
-Add a new exception: ReplicationException to be returned when one sync replica does not confirm the reception of messages (new data, new constraint/index, or for triggers)
-Update the logic to throw the ReplicationException when needed for insertion of new data, triggers, or creation of new constraint/index
-Add end-to-end tests to cover the loss of connection with sync/async replicas when adding new data, adding new constraint/indexes, and triggers
Add end-to-end tests to cover the creation and drop of indexes, existence constraints, and uniqueness constraints
Improved tooling function mg_sleep_and_assert to also show the last result when duration is exceeded
* Storage takes care of the saving of setting when a new replica is added
* Restore replicas at startup
* Modify interactive_mg_runner + memgraph to support that data-directory can be configured in CONTEXT
* Extend e2e test
* Correct typo
* Add flag to config to specify when replication should be stored (true by default when starting Memgraph)
* Remove un-necessary "--" in yaml file
* Make sure Memgraph stops if a replica can't be restored.
* Add UT covering the parsing of ReplicaStatus to/from json
* Add assert in e2e script to check that a port is free before using it
* Add test covering crash on Jepsen
* Make sure applciaiton crashes if it starts on corrupted replications' info
Starting with a non-reponsive replica is allowed.
* Add temporary startup flag: this is needed so jepsen do not automatically restore replica on startup of main. This will be removed in T0835
* Add test
* Add implementation and adapted test
* Update workloads.yaml to have a timeout > 0
* Update tests (failing due to merging of "add replica state")
This PR introduces READ COMMITTED and READ UNCOMMITTED isolation levels.
The isolation level can be set with a config or with a query for different scopes.
* Throw OOMException while creating vertices and edges
* Throw on indices creation
* Throw on setting a property
* Throw oom exception while recovering
* Throw exception when query engine asks for extra memory
* Block out of memor exception during skip list GC
* Define additional commit log constructor which takes an oldest active id
* Delay commit log construction until the recovery process is finished
* Add test for commit log with initial id
* Silence the macro redefinition warning
