org.apache.ignite.internal.processors.cache.mvcc

Interface MvccVersion

All Superinterfaces:

Comparable<MvccVersion>

All Known Subinterfaces:

MvccSnapshot

All Known Implementing Classes:

MvccSnapshotResponse, MvccSnapshotWithoutTxs, MvccVersionImpl

public interface MvccVersion
extends Comparable<MvccVersion>

MVCC version. This is unique version allowing to order all reads and writes within a cluster. Consists of two parts: - coordinator version - number which increases on every coordinator change; - counter - local coordinator counter which is increased on every update.

Method Summary

Modifier and Type	Method and Description
default int	compareTo(MvccVersion another)
long	coordinatorVersion()
long	counter()
int	operationCounter()

Method Detail

coordinatorVersion

long coordinatorVersion()

Returns:

Coordinator version.

counter

long counter()

Returns:

Local counter.

operationCounter

int operationCounter()

Returns:

Operation id in scope of current transaction.

compareTo

default int compareTo(@NotNull
                      MvccVersion another)

Specified by:

compareTo in interface Comparable<MvccVersion>