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From Damian Guy <damian....@gmail.com>
Subject Re: Kafka Streams - ordering grouped messages
Date Wed, 01 Mar 2017 13:03:00 GMT
Hi,

The TimestampExtractor won't effect the order the records arrive in. It
just provides a way for developers to use a timestamp other than the
default.

Thanks,
Damian

On Wed, 1 Mar 2017 at 12:34 Ofir Sharony <ofir.sharony@myheritage.com>
wrote:

> Hi,
>
> I have the following code on a stream:
>
> .selectKey(...)
> .groupByKey(...)
> .reduce(...)
>
> The records arrived to the Reducer function in the same order they were
> consumed from Kafka
> I have implemented a TimestampExtractor, extracting the wanted timestamp
> from each record, but unfortunately this didn't have any effect on the
> order the messages were received in the Reducer.
>
> Any thoughts on that?
> Thanks,
>
> *Ofir Sharony*
> BackEnd Tech Lead
>
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