When you update a documents TTL will the TTL be set to expire from the time
of update or the original index time?
For example if I have a document with a TTL of 2 days indexed on Monday, it
would then expire on Wednesday
HOWEVER if I update that TTL on Tuesday, again setting it to 2 days, would
the document still expire on Wednesday (2 days from Monday) or Thursday (2
days from Tuesday) ?