Nothing needs to happen for the writetime() to be valid. It's basically the
underlying timestamp so it's part of the insert itself.
Now, you don't give a whole lot of detail so it's hard to guess what could
be the problem. But since you mention that you get 0, not null, I'd suggest
to double check
I've got a Cassandra 2.0.2 server with a single node. I've written a test
harness that populates the database, looks at the write times for each
column, runs the test cases, and then checks to see what columns have been
updated. However, when I query WRITETIME() (prior to running the test
cases), o
