Yes, it does. Internally, each re-scheduling is performed as stop-and-resume the job, similar to a failover. Without checkpoints, the job will always restore from the very beginning.
Thank you~ Xintong Song On Mon, May 17, 2021 at 2:54 PM Alexey Trenikhun <yen...@msn.com> wrote: > Hi Xintong, > Does reactive mode need checkpoint for re-scheduling ? > > Thanks, > Alexey > > ------------------------------ > *From:* Xintong Song <tonysong...@gmail.com> > *Sent:* Sunday, May 16, 2021 7:30:15 PM > *To:* Flink User Mail List <user@flink.apache.org> > *Subject:* Re: reactive mode and back pressure > > Hi Alexey, > > I don't think the new reactive mode makes any changes to the > checkpoint/savepoint mechanism, at least not at the moment. > > However, you might want to take a look at the unaligned checkpoint [1]. > The unaligned checkpoint is designed to be tolerant with back pressure. > AFAIK, this can work with both the default and the new reactive modes. > > Thank you~ > > Xintong Song > > > [1] > https://ci.apache.org/projects/flink/flink-docs-release-1.13/docs/ops/state/checkpoints/#unaligned-checkpoints > > > > On Fri, May 14, 2021 at 11:29 PM Alexey Trenikhun <yen...@msn.com> wrote: > > Hello, > > Is new reactive mode can operate under back pressure? Old manual rescaling > via taking savepoint didn't work with system under back pressure, since it > was practically impossible to take savepoint, so wondering is reactive mode > expected to be better in this regards ? > > Thanks, > Alexey > >
