Hi Jerry, You are right that we only use one thread per impalad. We're working on full multithreading of plans, which should address that bottleneck (although that work is still a little while away).
- Tim On Wed, Jul 20, 2016 at 1:51 AM, [email protected] <[email protected]> wrote: > > Hello, all > When I use Impala to run a SQL query like 'INSERT INTO/OVERWRITE', > it would be too slow. > It seems like that only one thread will do disk write. If so, What > for the design? > > ------------------------------ > Jerry > [email protected] > >
