Could you tell me a little more about the delays about the record caches and
how I can disable it ?
If I could summarize my problem:
-A new record with a new timestamp > all records sent before, I expect *all* of
the old windows to close
-Expiry of the windows depends only on the event time and not on the key
Are these two statements correct ?
Thanks
Mohan
On 6/20/19, 9:17 AM, "John Roesler" <j...@confluent.io> wrote:
Hi!
In addition to setting the grace period to zero (or some small
number), you should also consider the delays introduced by record
caches upstream of the suppression. If you're closely watching the
timing of records going into and coming out of the topology, this
might also spoil your expectations. You could always disable the
record cache to make the system more predictable (although this would
hurt throughput in production).
Thanks,
-John
On Wed, Jun 19, 2019 at 3:01 PM Parthasarathy, Mohan <mpart...@hpe.com>
wrote:
>
> We do explicitly set the grace period to zero. I am going to try the new
version
>
> -mohan
>
>
> On 6/19/19, 12:50 PM, "Parthasarathy, Mohan" <mpart...@hpe.com> wrote:
>
> Thanks. We will give it a shot.
>
> On 6/19/19, 12:42 PM, "Bruno Cadonna" <br...@confluent.io> wrote:
>
> Hi Mohan,
>
> I realized that my previous statement was not clear. With a grace
> period of 12 hour, suppress would wait for late events until
stream
> time has advanced 12 hours before a result would be emitted.
>
> Best,
> Bruno
>
> On Wed, Jun 19, 2019 at 9:21 PM Bruno Cadonna
<br...@confluent.io> wrote:
> >
> > Hi Mohan,
> >
> > if you do not set a grace period, the grace period defaults to
12
> > hours. Hence, suppress would wait for an event that occurs 12
hour
> > later before it outputs a result. Try to explicitly set the
grace
> > period to 0 and let us know if it worked.
> >
> > If it still does not work, upgrade to version 2.2.1 if it is
possible
> > for you. We had a couple of bugs in suppress recently that are
fixed
> > in that version.
> >
> > Best,
> > Bruno
> >
> > On Wed, Jun 19, 2019 at 8:37 PM Parthasarathy, Mohan
<mpart...@hpe.com> wrote:
> > >
> > > No, I have not set any grace period. Is that mandatory ? Have
you seen problems with suppress and windows expiring ?
> > >
> > > Thanks
> > > Mohan
> > >
> > > On 6/19/19, 12:41 AM, "Bruno Cadonna" <br...@confluent.io>
wrote:
> > >
> > > Hi Mohan,
> > >
> > > Did you set a grace period on the window?
> > >
> > > Best,
> > > Bruno
> > >
> > > On Tue, Jun 18, 2019 at 2:04 AM Parthasarathy, Mohan
<mpart...@hpe.com> wrote:
> > > >
> > > > On further debugging, what we are seeing is that
windows are expiring rather randomly as new messages are being processed. . We
tested with new key for every new message. We waited for the window time before
replaying new messages. Sometimes a new message would come in and create state.
It takes several messages to make some of the old windows to be closed (go past
suppress to the next stage). We have also seen where one of them never closed
even but several other older ones expired. Then we explicitly sent a message
with the same old key and then it showed up. Also, for every new message, only
one of the previous window expires even though there are several pending.
> > > >
> > > > If we don't use suppress, then there is never an issue.
With suppress, the behavior we are seeing is weird. We are using 2.1.0 version
in DSL mode. Any clues on what we could be missing ? Why isn't there an order
in the way windows are closed ? As event time progresses by the new messages
arriving, the older ones should expire. Is that right understanding or not ?
> > > >
> > > > Thanks
> > > > Mohan
> > > >
> > > > On 6/17/19, 3:43 PM, "Parthasarathy, Mohan"
<mpart...@hpe.com> wrote:
> > > >
> > > > Hi,
> > > >
> > > > We are using suppress in the application. We see
some state being created at some point in time. Now there is no new data for a
day or two. We send new data but the old window of data (where we see the state
being created) is not closing i.e not seeing it go through suppress and on to
the next stage. It is as though the state created earlier was purged. Is this
possible ?
> > > >
> > > > Thanks
> > > > Mohan
> > > >
> > > >
> > > >
> > >
> > >
>
>
>
>
