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Re: Ask about counting elements per window


Hi Rad,

You can take a look at the group window[1] of SQL. I think it may help you.

Best, Hequn

On Thu, Nov 1, 2018 at 12:53 AM Rad Rad <radhya.sahal@xxxxxxxxx> wrote:
Hi All,

I have a GPS stream consumed by FlinkKafkaConsumer which contains a set of
GPSs of different users. I need to count a number of users per a specific
window of this stream.

Could anyone help me, a part of my code is below


        // read data from Kafka
                DataStream stream = env.addSource(
                                new FlinkKafkaConsumer09<>(parameterTool.getRequired("topic")
                                                , new JSONDeserializationSchema(), parameterTool.getProperties()));

                DataStream<Tuple7&lt;String, String,String, String, Float, Float,
Timestamp>>  gpsStream  = stream.flatMap(gpsFlatMapFunc).


Thanks in advanced.





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