Hi Xintong, yes, I'm on it.
Best, Arvid On Fri, Jan 22, 2021 at 1:01 PM Xintong Song <tonysong...@gmail.com> wrote: > Hi Arvid, > > Thanks for the announcement. > > I think we'd better also update the 1.12 release notes[1] and 1.12.1 > release blog post[2]. > Would you have time to help prepare the warning messages? > > Thank you~ > > Xintong Song > > > [1] > > https://github.com/apache/flink/blob/master/docs/release-notes/flink-1.12.md > > [2] > > https://github.com/apache/flink-web/blob/asf-site/_posts/2021-01-19-release-1.12.1.md > > > > On Fri, Jan 22, 2021 at 7:40 PM Arvid Heise <ar...@apache.org> wrote: > > > Dear users, > > > > Unfortunately, the bug in the unaligned checkpoint that we fixed in > 1.12.1 > > still occurs under certain circumstances, such that we recommend to not > use > > unaligned checkpoints in production until 1.12.2. While the normal > > processing is not affected by this bug, a recovery with corrupted > > checkpoints will not succeed. > > > > If you have used unaligned checkpoints, you can change back to aligned > > checkpoint when starting from an uncorrupted unaligned checkpoint. There > is > > no easy way to check if a checkpoint is corrupted or not, however, the > rare > > corruption happens most likely when you have short checkpointing > intervals > > (<1s), high backpressure, and the previous checkpoint was declined for > some > > reason. So to be safe, before switching back, make sure that the last > > handful of checkpoints all succeeded. > > > > We have already prepared a fix that we will merge into the release branch > > today, but the discussion on when to release 1.12.2 has not started yet. > > > > Best, > > > > Arvid > > > -- Arvid Heise | Senior Java Developer <https://www.ververica.com/> Follow us @VervericaData -- Join Flink Forward <https://flink-forward.org/> - The Apache Flink Conference Stream Processing | Event Driven | Real Time -- Ververica GmbH | Invalidenstrasse 115, 10115 Berlin, Germany -- Ververica GmbH Registered at Amtsgericht Charlottenburg: HRB 158244 B Managing Directors: Timothy Alexander Steinert, Yip Park Tung Jason, Ji (Toni) Cheng
