Module tikv::storage::mvcc[−][src]

Multi-version concurrency control functionality.

Modules

Error
GC_DELETE_VERSIONS_HISTOGRAM
GcInfo
Key	Key type.
Lock
MVCC_VERSIONS_HISTOGRAM
MvccConsistencyCheckObserver
MvccInfoIterator
MvccReader
MvccTxn	An abstraction of a locally-transactional MVCC key-value store
OverlappedWrite
PointGetter	This struct can be used to get the value of user keys. Internally, rollbacks are ignored and smaller version will be tried. If the isolation level is Si, locks will be checked first.
PointGetterBuilder	`PointGetter` factory.
ReleasedLock	`ReleasedLock` contains the information of the lock released by `commit`, `rollback` and so on. It’s used by `LockManager` to wake up transactions waiting for locks.
ScannerBuilder
SnapshotReader	Read from an MVCC snapshot, i.e., a logical view of the database at a specific timestamp (the start_ts).
TimeStamp
Write
WriteRef

ErrorInner
LockType
Mutation	A row mutation.
NewerTsCheckState
Scanner
TxnCommitRecord	The result of `get_txn_commit_record`, which is used to get the status of a specified transaction from write cf.
WriteType

MAX_TXN_WRITE_SIZE
SHORT_VALUE_MAX_LEN

default_not_found_error	Generates `DefaultNotFound` error or panic directly based on config.
has_data_in_range
seek_for_valid_write	Seek for the next valid (write type == Put or Delete) write record. The write cursor must indicate a data key of the user key of which ts <= after_ts. Return None if cannot find any valid write record.

DeltaScanner	This scanner scans all entries whose commit_ts (or locks’ start_ts) is in range (from_ts, cfg.ts].
EntryScanner	This scanner is like `ForwardKvScanner` but outputs `TxnEntry`.
Result
Value	Value type which is essentially raw bytes.