Hi,
Thomas, thanks for confirming this. I have noticed, that in 1.9 the
WebUI has been reworked a lot, does anyone know if this is still an
issue? I currently cannot easily try 1.9, so I cannot confirm or
disprove that.
Jan
On 8/14/19 6:25 PM, Thomas Weise wrote:
I have also noticed this issue (Flink 1.5, Flink 1.8), and it appears with
higher parallelism.
This can be confusing to the user when watermarks actually work and can be
observed using the metrics.
On Wed, Aug 14, 2019 at 7:36 AM Jan Lukavský <je...@seznam.cz> wrote:
Hi,
is it possible, that watermarks are sometimes not propagated to WebUI,
although they are internally moving as normal? I see in WebUI every
operator showing "No Watermark", but outputs seem to be propagated to
sink (and there are watermark sensitive operations involved - e.g.
reductions on fixed windows without early emitting). More strangely,
this happens when I increase parallelism above some threshold. If I use
parallelism of N, watermarks are shown, when I increase it above some
number (seems not to be exactly deterministic), watermarks seems to
disappear.
I'm using Flink 1.8.1.
Did anyone experience something like this before?
Jan
