We're planning to add secondary indexes in the next few releases. Doing them well in distributed systems is really hard. It's relatively easy to check off a box

We're planning to add secondary indexes in the next few releases. Doing them well in distributed systems is really hard. It's relatively easy to check off a box and introduce it as a feature, to make it actually behave well and allow for good performance is incredibly tricky. This is why they didn't make it into this release -- since it's a core feature of every db, we wanted to take the time to do this right.