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), over half the time it returns 0 (not null, but 0). It's pretty consistent which columns return the real write time and which ones return 0. I've even tried adding a 10 second delay between populating the database and checking the write times, and it doesn't help. When its all done, if I call writetime() on a column for cqlsh, I get a non-zero value.
Any thoughts? What has to happen before a write time is available? Thanks in advance. Robert
