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From antonio saldivar <ansal...@gmail.com>
Subject Re: Measure Latency from source to sink
Date Tue, 26 Jun 2018 02:00:53 GMT
Thank you very much

I already did #2 but ate the moment i print te output as i am using a
trigger alert and evaluete the window it replace me the toString values to
null or 0 and only prints the ones saved in my accumulator and the keyBy

On Mon, Jun 25, 2018, 9:22 PM Hequn Cheng <chenghequn@gmail.com> wrote:

> Hi antonio,
> I see two options to solve your problem.
> 1. Enable the latency tracking[1]. But you have to pay attention to it's
> mechanism, for example, a) the sources only *periodically* emit a special
> record and b) the latency markers are not accounting for the time user
> records spend in operators as they are bypassing them.
> 2. Add a time field to each of your record. Each time a record comes in
> from the source, write down the time(t1), so that we can get the latency at
> sink(t2) by  t2 - t1.
> Hope this helps.
> Hequn
> [1]
> https://ci.apache.org/projects/flink/flink-docs-master/monitoring/metrics.html#latency-tracking
> On Tue, Jun 26, 2018 at 5:23 AM, antonio saldivar <ansale10@gmail.com>
> wrote:
>> Hello
>> I am trying to measure the latency of each transaction traveling across
>> the system as a DataSource I have a Kafka consumer and I would like to
>> measure the time that takes from the Source to Sink. Does any one has an
>> example?.
>> Thank you
>> Best Regards

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