* 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>
* 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
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.
* Add basic communication process using commit timestamp
* Add file number to req
* Add proper recovery handling
* Allow loading of WALs with same seq num
* Allow always desired commit timestamp
* Set replica timestamp for operation
* Mark non-transactional timestamp as finished
Summary:
This diff contains a necessary functionality to save and restore unique
constraint operations. The previous snapshot/WAL version is backward
compatible. Integration tests for migration from older snapshot and WAL
versions are also included.
Reviewers: mferencevic
Reviewed By: mferencevic
Subscribers: pullbot
Differential Revision: https://phabricator.memgraph.io/D2680
