Hi, Kostas is right in that the elements are never explicitly sorted by timestamp. In some cases they might not even be iterated in the order that they were added so I would normally assume the order of the elements to be completely arbitrary.
Cheers, Aljoscha On Wed, 10 Aug 2016 at 09:44 Kostas Kloudas <k.klou...@data-artisans.com> wrote: > Hi Paul, > > Elements are returned in the order they were added in the window. > No sorting on timestamp is performed. > > Hope this helps, > Kostas > > On Aug 9, 2016, at 10:22 PM, Paul Joireman <paul.joire...@physiq.com> > wrote: > > When you are using a window function the docs: > > > https://ci.apache.org/projects/flink/flink-docs-master/apis/streaming/windows.html#windowfunction---the-generic-case > > state that > > A WindowFunction gets an Iterable containing all the elements of the > window being processed > > If the input data stream is timestamped using event times where the events > can come in out of chronological order, are the events returned by the > interator the same order as they were added? Or does the window sort them > internally on timestamp and return them through the iterator in timestamp > chronological order? > > Paul > > >
