I took hdpcd spark certification exam in june and It didn’t received results or any notification for 2 weeks. So, I sent an email to firstname.lastname@example.org regarding the same. Then I received email stating that I failed the examination and only 4 were correct out of 7 and the result was very surprising to me. So I again sent an email to team mentioning the same. Then they raised an ticket for re evaluation of my exam and mentioned that this process takes quite long. After 1 week I sent a reminder and after 2 days I got the email that I cleared the certification with 6 out of 7 questions were correct and they issued certificate too.
It was quite surprising that how they evaluate the results.
Hope my experience helps some one out there.