Interview process took around one week. I spoke with three people in total.
Second interviewer just was not interested to listen me, just waited till I will finish introduction and giving no time to ask any questions he just jumped into coding challenge.
He was not interesting in process at all. I had to ask if he is still there couple times. Closer to the end of interview he hurry me up - "it's fine, no need to finish it", at this point I ignored him and was able to get it done.
Next day I got a reply "After reviewing your background and experience, we do not see a strong match at this time" which is an absolute lie.
I do not recommend considering any opportunities at xcalar.