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From kant kodali <kanth...@gmail.com>
Subject Re: are blink changes merged into flink 1.9?
Date Sun, 12 Jan 2020 12:07:11 GMT
Hi,

Thanks for the response! The Documentation says Blink will treat batch as a
special case of streaming. if so, can I stream from a database? or put it
in another way. If I have two streams A & B where Stream A is writing to
Database and Stream B reading from the database. will stream B keeps
running forever picking up all the changes written to the database by
Stream A? If not, is there any to achieve that sort of functionality?

The reason I may want to do something like this is I may want to do join on
two tables that continuously get populated however I cannot specify the
time constraint on the state which is why I would want to write to external
database such that I can treat it as an infinite store and then do join as
the data come in continuously.

Thanks!




On Sat, Jan 11, 2020 at 6:42 PM Benchao Li <libenchao@gmail.com> wrote:

> Hi kant,
>
> Blink has merged most of it's functionality into 1.9-release, and we have
> two planners [1] in 1.9:
>
>    - Blink Planner
>    - Old Planner (Legacy Planner)
>
> You can try out blink planner by [2].
> Hope this helps.
>
> [1]
> https://ci.apache.org/projects/flink/flink-docs-release-1.9/dev/table/common.html#main-differences-between-the-two-planners
> [2]
> https://ci.apache.org/projects/flink/flink-docs-release-1.9/dev/table/common.html#create-a-tableenvironment
>
>
> kant kodali <kanth909@gmail.com> 于2020年1月12日周日 上午7:48写道:
>
>> Hi All,
>>
>> Are blink changes merged into flink 1.9? It looks like there are a lot of
>> features and optimizations in Blink and if they aren't merged into flink
>> 1.9 I am not sure on which one to use? is there any plan towards merging it?
>>
>> Thanks!
>>
>
>
> --
>
> Benchao Li
> School of Electronics Engineering and Computer Science, Peking University
> Tel:+86-15650713730
> Email: libenchao@gmail.com; libenchao@pku.edu.cn
>
>

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