[nfa_backward]

Impala has an in-memory columnar format on its road map for 2016. Is that format being design with Kudu in mind?

Edit: I understand that the formats, while both columnar, serve different purposes. I am more curious about overlap if any between the two.

[tlipcon]

Yep, I've been taking part in those design discussions. We hope to have Kudu tablet servers support generating this in-memory format in shared memory as the result of scans, so the Impala server (client from Kudu's perspective) can directly operate on the data. We're expecting a 20-30% speed boost from this for some queries, though haven't done any tests at scale of the prototype.