Comments (1)
eincs
commented on August 17, 2024
해인사에서 트랜잭션을 커밋 할 때에는 RowLock의 상태를 Prewrite로 만들고, 여러 Mutation을 차례로 적용하고, 마지막으로 RowLock의 상태를 Stable상태로 만듭니다. 이 때, 각각의 연산은 다른 Timestamp에 값을 적게 됩니다. Prewrite할 때에는 RowLock을 PrewriteTimestamp에 값을 적고 Mutation을 차례로 적용할 때에는 PrewriteTimestamp를 1씩 더하여 차례로 값을 적습니다. 마지막으로 Stable상태로 바꿀 때에는 RowLock을 CommitTimestamp에 적게 됩니다. 따라서, 모두 다른 Timestamp를 이용하게 되는데, 편의상 두 개의 변수에 값을 저장하여 사용하는 것입니다.
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