[Bug] Fix bug that runningTxnNum does not equal to the real running txn num #3674
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
This is because the logic for modifying the number of txn running is wrong.
Because we did not persist the previous status(preStatus) of a transaction.
Therefore, when replaying the metadata log, we cannot decide whether to modify
the
runningTxnNumvalue based onpreStatus. This info is lost.Fix #3673