gt; ```
> package org.example
>
> import org.apache.flink.streaming.api.scala.function.ProcessWindowFunction
> import org.apache.flink.streaming.api.windowing.windows.TimeWindow
> import org.apache.flink.util.Collector
>
> class ScalaSessionProcessWindowFunction extends
> ProcessWindowFunction[(String, Lo
org.apache.flink.util.Collector
class ScalaSessionProcessWindowFunction extends ProcessWindowFunction[(String,
Long), (String, Long, Long), String, TimeWindow]{
override def process(key: String, context: Context, elements: Iterable[(String,
Long)], out: Collector[(String, Long, Long)]): Unit = {
val maxId
发件人: patricia lee
发送时间: 2023年9月26日 21:30
收件人: user@flink.apache.org
主题: ProcessWindowFunction Parallelism
Hi,
Are processwindowfunctions cannot have more than 1 parallelism? Whenever I set
it to 2, I am receiving an error message, "The parallelism of non parallel
operator must
Hi,
Are processwindowfunctions cannot have more than 1 parallelism? Whenever I
set it to 2, I am receiving an error message, "The parallelism of non
parallel operator must be 1."
dataKafka = Kafkasource (datasource)
.parallelism(2)
.rebalance();
dataKafka.windowAll(GlobalWindows.create()).trigge
lds of the Tuple4 that is in the Iterator.
>>
>> Any advice as to what the best way is?
>>
>> static class MyProcessWindowFunction extends
>> ProcessWindowFunction, String, String,
>> TimeWindow> {
>> @Override
>>
>>
>> static class MyProcessWindowFunction extends
>> ProcessWindowFunction, String, String,
>> TimeWindow> {
>> @Override
>> public void process(String key, Context context,
>> Iterable> input, Collector out)
>> {
>>
t;
> static class MyProcessWindowFunction extends
> ProcessWindowFunction, String, String,
> TimeWindow> {
> @Override
> public void process(String key, Context context,
> Iterable> input, Collector out)
> {
> Long elapsed = 0L;
>
Hi,
I have need to sort the input of the ProcesWindowFunction by one of the
fields of the Tuple4 that is in the Iterator.
Any advice as to what the best way is?
static class MyProcessWindowFunction extends
ProcessWindowFunction, String, String,
TimeWindow> {
@Override
pub
Hi,
I have need to sort the input of the ProcesWindowFunction by one of the
fields of the Tuple4 that is in the Iterator.
static class MyProcessWindowFunction extends
ProcessWindowFunction, String, String,
TimeWindow> {
@Override
public void process(String key, Context cont
s 😊
>
>
>
> Thias
>
>
>
>
>
> *From:* HG
> *Sent:* Montag, 28. Februar 2022 16:25
> *To:* user
> *Subject:* processwindowfunction output Iterator
>
>
>
> Hi,
>
>
>
>
>
> Can processwindowfunction output an Iterator?
>
> I need to sort
Goedemorgen Hans,
You can call the out.collect(…) multiple times, i.e. for each forwarded event …
how about this 😊
Thias
From: HG
Sent: Montag, 28. Februar 2022 16:25
To: user
Subject: processwindowfunction output Iterator
Hi,
Can processwindowfunction output an Iterator?
I need to sort
Hi,
Can processwindowfunction output an Iterator?
I need to sort and subtract timestamps from keyed events and then output
them all with added elapsed times.
Regards Hans
ate is not allowed)..
>
> > The state is scoped to the key (created per key in the
> ProcessWindowFunction with a ttl )
> Yes.
>
> > The state will remain alive irrespective of whether the Window is closed
> or not (a TTL timer does the collection )
> Right, but you n
Hi Vishal,
Sorry for the late reply,
Please find my answers below.
By state I assume the state obtained via getRuntimeContext (access to
window state is not allowed)..
> The state is scoped to the key (created per key in the ProcessWindowFunction
> with a ttl )
Yes.
> The state wi
I had a query Say I have a single key with 2 live sessions ( A and B )
with a configured lateness .
Do these invariants hold?
* The state is scoped to the key (created per key in the
ProcessWindowFunction with a ttl )
* The state will remain alive irrespective of whether the Window is closed
or
to achieve and why do you need
> to combine
> >>> sliding windows with state scoped to window+key?
> >>>
> >>> Regards,
> >>> Roman
> >>>
> >>> On Fri, Mar 12, 2021 at 5:13 AM Vishal Santoshi
> >>> wrote:
> >>&
you are trying to achieve and why do you need to
>>> combine
>>> sliding windows with state scoped to window+key?
>>>
>>> Regards,
>>> Roman
>>>
>>> On Fri, Mar 12, 2021 at 5:13 AM Vishal Santoshi
>>> wrote:
>>
l Santoshi
>> wrote:
>> >
>> > Essentially, Does this code leak state
>> >
>> > private static class SessionIdProcessWindowFunction> java.io.Serializable, VALUE extends java.io.Serializable>
>> > extends
>> > ProcessWindowFunction,
>
t; private static class SessionIdProcessWindowFunction java.io.Serializable, VALUE extends java.io.Serializable>
> > extends
> > ProcessWindowFunction,
> KeyedSessionWithSessionID, KEY, TimeWindow> {
> > private static final long serialVersionUID = 1L;
> > priv
?
Regards,
Roman
On Fri, Mar 12, 2021 at 5:13 AM Vishal Santoshi
wrote:
>
> Essentially, Does this code leak state
>
> private static class SessionIdProcessWindowFunction java.io.Serializable, VALUE extends java.io.Serializable>
> extends
> ProcessWindowFunction,
> KeyedS
Essentially, Does this code leak state
private static class SessionIdProcessWindowFunction
extends
ProcessWindowFunction, KeyedSessionWithSessionID<
KEY, VALUE>, KEY, TimeWindow> {
private static final long serialVersionUID = 1L;
private final static ValueStateDescriptor sessio
Hello folks,
The suggestion is to use windowState() for a key key per
window state and clear the state explicitly. Also it seems that
getRuntime().getState() will return a globalWindow() where state is shared
among windows with the same key. I desire of course to have state scope
;d'))
[1] https://issues.apache.org/jira/browse/FLINK-21202
[2]
https://ci.apache.org/projects/flink/flink-docs-release-1.12/dev/python/table-api-users-guide/operations.html#aggregations
On Fri, Feb 19, 2021 at 8:26 AM Hongyuan Ma wrote:
> Greetings,
>
> I am a newbie to pyflink. I
Greetings,
I am a newbie to pyflink. I want to be able to use processWindowFunction in a
Tumble Window, and finally output 0 or more lines. I have checked the
datastreamAPI and TableAPI of pyflink, but have not found a complete example.
pyflink's datastream API does not seem to impl
lobos
wrote:
> Hi,
>
> I am having a difficult time distinguishing the difference between
> RuntimeContext state and global state when using a ProcessWindowFunction.
>
> A ProcessWindowFunction has three access different kinds of state.
> 1. RuntimeContext state.
> 2.
Hi,
I am having a difficult time distinguishing the difference between
RuntimeContext state and global state when using a ProcessWindowFunction.
A ProcessWindowFunction has three access different kinds of state.
1. RuntimeContext state.
2. ProcessWindowFunction.Context global state
3
val interval .
>>>
>>> On Mon, Dec 2, 2019 at 10:59 AM vino yang wrote:
>>>
>>>> *This Message originated outside your organization.*
>>>> --
>>>> Hi Avi,
>>>>
>>>> Firstly, let's c
t;> Vino
>>
>>
>> Avi Levi 于2019年12月2日周一 下午4:11写道：
>>
>>> Hi,
>>> Is there a way to fire timer in a ProcessWindowFunction ? I would like
>>> to mutate the global state on a timely basis.
>>>
>>>
; Best,
> Vino
>
>
> Avi Levi 于2019年12月2日周一 下午4:11写道：
>
>> Hi,
>> Is there a way to fire timer in a ProcessWindowFunction ? I would like to
>> mutate the global state on a timely basis.
>>
>>
Hi Avi,
Firstly, let's clarify that the "timer" you said is the timer of the
window? Or a timer you want to register to trigger some action?
Best,
Vino
Avi Levi 于2019年12月2日周一 下午4:11写道：
> Hi,
> Is there a way to fire timer in a ProcessWindowFunction ? I would like to
>
Hi,
Is there a way to fire timer in a ProcessWindowFunction ? I would like to
mutate the global state on a timely basis.
erWithClientResource in order to use
> StreamExecutionEnvironment?
>
>
>
>
>
> Best,
>
> Michael
>
>
>
>
>
> *From: *vino yang
> *Date: *Monday, October 28, 2019 at 1:32 AM
> *To: *Michael Nguyen
> *Cc: *"user@flink.apache.org"
> *Subjec
From: vino yang
Date: Monday, October 28, 2019 at 1:32 AM
To: Michael Nguyen
Cc: "user@flink.apache.org"
Subject: Re: Testing AggregateFunction() and ProcessWindowFunction() on
KeyedDataStream
[External]
Hi Michael,
You may need to know `KeyedOneInputStreamOperatorTestHarness`
e tried testing AggregateFunction() and ProcessWindowFunction()
> on a KeyedDataStream? I have reviewed the testing page on Flink’s official
> website (
> https://ci.apache.org/projects/flink/flink-docs-stable/dev/stream/testing.html)
> and I am not quite sure how I could utilize these two f
Hello everbody,
Has anyone tried testing AggregateFunction() and ProcessWindowFunction() on a
KeyedDataStream? I have reviewed the testing page on Flink’s official website
(https://ci.apache.org/projects/flink/flink-docs-stable/dev/stream/testing.html)
and I am not quite sure how I could
you mean by windowState.clear(). As far as I understand you
correctly it's a windowState from ProcessWindowFunction Context which is
KeyedStateStore. KeyedStateStore is managing registered keyed states that I
don't have, so without a descriptor I can't access any clear() method. There is
no stat
ly it's a windowState from ProcessWindowFunction Context which
> is KeyedStateStore. KeyedStateStore is managing registered keyed states
> that I don't have, so without a descriptor I can't access any clear()
> method. There is no state that I manage explicitly as you can see he
Hi,
I'm no sure what you mean by windowState.clear(). As far as I understand you
correctly it's a windowState from ProcessWindowFunction Context which is
KeyedStateStore. KeyedStateStore is managing registered keyed states that I
don't have, so without a descriptor I can
下午4:14写道：
> Hi all,
>
>
> I'm using *ProcessWindowFunction* in a keyed stream with the following
> definition:
>
> final SingleOutputStreamOperator processWindowFunctionStream =
>
> keyedStream.window(ProcessingTimeSessionWindows.withGap(Time.millisecon
Hi all,
I'm using ProcessWindowFunction in a keyed stream with the following definition:
final SingleOutputStreamOperator processWindowFunctionStream =
keyedStream.window(ProcessingTimeSessionWindows.withGap(Time.milliseconds(100)))
.process(new CustomProcessWindowFun
get the window start and end
>>>>> with `TimeWindow.getWindowStartWithOffset()`. For even time, you can get
>>>>> the timestamp from the rowtime field.
>>>>>
>>>>> With the start and end time, you can then perform LATERAL JOIN to
>>
IN to
>>>> enrich the information. You can add a cache in your table function to avoid
>>>> frequent contacting with the REST endpoint.
>>>>
>>>> Best, Hequn
>>>>
>>>>
>>>> On Mon, Jul 8, 2019 at 10:46 PM Flavio Pompermai
rich
>>> the information. You can add a cache in your table function to avoid
>>> frequent contacting with the REST endpoint.
>>>
>>> Best, Hequn
>>>
>>>
>>> On Mon, Jul 8, 2019 at 10:46 PM Flavio Pompermaier
>>> wrote:
>
;>> What I'm trying to do is to read a stream of events that basically
>>> contains a UserId field and, every X minutes (i.e. using a Time Window) and
>>> for each different UserId key, query 3 different REST services to enrich my
>>> POJOs*.
>>> For t
stream of events that basically
>> contains a UserId field and, every X minutes (i.e. using a Time Window) and
>> for each different UserId key, query 3 different REST services to enrich my
>> POJOs*.
>> For the moment what I do is to use a ProcessWindowFunction aft
ment what I do is to use a ProcessWindowFunction after the
> .keyBy().window() as shown in the previous mail example to contact those 3
> services and enrich my object.
>
> However I don't like this solution because I'd like to use Flink to it's
> full potential so I'd like to enr
use a ProcessWindowFunction after the
.keyBy().window() as shown in the previous mail example to contact those 3
services and enrich my object.
However I don't like this solution because I'd like to use Flink to it's
full potential so I'd like to enrich my object using LATERAL
-master/dev/table/tableApi.html#row-based-operations
[2]
https://ci.apache.org/projects/flink/flink-docs-master/dev/table/udfs.html#table-aggregation-functions
On Mon, Jul 8, 2019 at 6:27 PM Flavio Pompermaier
wrote:
> Hi to all,
> from what I understood a ProcessWindowFunction can only be used
Hi to all,
from what I understood a ProcessWindowFunction can only be used in the
Streaming API.
Is there any plan to port them also in the Table API (in the near future)?
I'd like to do with Table API the equivalent of:
final DataStream events = env.addSource(src);
events.filter(e -> e
gt;> antonio saldivar 于2018年8月19日周日 上午10:18写道：
>>>>>
>>>>>> hi Vino
>>>>>>
>>>>>> it is possible to use global window, then set the trigger onElement
>>>>>> comparing the element that has arrived with for exam
gt; hi Vino
>>>>>
>>>>> it is possible to use global window, then set the trigger onElement
>>>>> comparing the element that has arrived with for example 10 mins, 20 mins
>>>>> and 60 mins of data?
>>>>>
>>>>>
nt if the same id sum like $200 total within those thresholds
>>>> and count more or equals to 3 I need to be able to set some values to the
>>>> object if the object does not reach those thresholds i do not set the
>>>> values and keep sending the output with o
and keep sending the output with or without those value.
>>>
>>> just processing the object on the fly and send output
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> El vie., 17 ago. 2018 a las 22:14, vino yang ()
>>> escribió:
o not set the
>> values and keep sending the output with or without those value.
>>
>> just processing the object on the fly and send output
>>
>>
>>
>>
>>
>>
>>
>> El vie., 17 ago. 2018 a las 22:14, vino yang ()
>> escribió:
essing the object on the fly and send output
>
>
>
>
>
>
>
> El vie., 17 ago. 2018 a las 22:14, vino yang ()
> escribió:
>
>> Hi antonio,
>>
>> Yes, ProcessWindowFunction is a very low level window function.
>> It allows you to access the data in the win
ago. 2018 a las 22:14, vino yang ()
escribió:
> Hi antonio,
>
> Yes, ProcessWindowFunction is a very low level window function.
> It allows you to access the data in the window and allows you to customize
> the output of the window.
> So if you use it, while giving you flexib
Hi antonio,
Yes, ProcessWindowFunction is a very low level window function.
It allows you to access the data in the window and allows you to customize
the output of the window.
So if you use it, while giving you flexibility, you need to think about
other things, which may require you to write
Hi Vino
thank you for the information, actually I am using a trigger alert and
processWindowFunction to send my results, but when my window slides or ends
it sends again the objects and I an getting duplicated data
El jue., 16 ago. 2018 a las 22:05, vino yang ()
escribió:
> Hi Antonio,
>
Hi Antonio,
What results do not you want to get when creating each window?
Examples of the use of ProcessWindowFunction are included in many test
files in Flink's project, such as SideOutputITCase.scala or
WindowTranslationTest.scala.
For more information on ProcessWindowFunction, you can
Hello
I am implementing a data stream where I use sliding windows but I am stuck
because I need to set values to my object based on some if statements in my
process function and send the object to the next step but I don't want
results every time a window is creating
if anyone has a good example
Hi yuanjun,
There are very few examples of ProcessWindowFunction, but there are some
implementations for testing in Flink's source code for your reference.[1]
[1]:
https://github.com/apache/flink/blob/master/flink-streaming-scala/src/test/scala/org/apache/flink/streaming/api/
I read the doc about ProcessWindowFunction
But I the code on the flink demo is incorrect
public class MyProcessWindowFunction extends
ProcessWindowFunction, String, String, TimeWindow>
{
Tuple cannot have to parameter.
I try to find a demo which ProcessWindowFunction used in window word co
. To other alternatives were
offered which at the time of the implementation were not "available/looked
at"
1) Cep Library
2) ProcessFunction/ ProcessWindowFunction
I seem to have a similar test case. An I have looked at CEP library and
using GlobalWindow withProcessWindowFunction .
Consider th
c:"William Saar"
Sent:Tue, 20 Jun 2017 18:20:01 +0200
Subject:Re: Access to time in aggregation, or aggregation in
ProcessWindowFunction?
Hi William,
I'm not quite sure what you are trying to achieve...
What constitutes a "new event"? is this based on some key? If so, yo
Hi William,
I'm not quite sure what you are trying to achieve...
What constitutes a "new event"? is this based on some key? If so, you may
group on that key, create a window and use a custom trigger [1] instead where
you can react in onElement() and setup a event time timer for the first one an
Hi,
I am looking to implement a window that sends out updates for each new
event it receives and also when an expiration timer fires and purges
the window (the expiration time can be determined from a timestamp in
the first event).
I can't figure out a way to do this that does not require preserv
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