Error: 10 ABORTED: Too much contention on these documents. Please try again

Question

What does this error mean?

Especially, what do they mean by : Please try again

Does it mean that the transaction failed I have to re-run the

Answer 1

Found maxAttempts in the runTransaction code which should modify the 5 default attempts (but didn't tested yet).

Anyway, I think that random wait (plus eventually the queue) are still the better option.