Re: flink 1.10 support LONG as watermark?

Posted by Jark Wu-3 on
URL: http://deprecated-apache-flink-user-mailing-list-archive.369.s1.nabble.com/flink-1-10-support-LONG-as-watermark-tp33981p33983.html

Hi Jingjing,

Event time field must be a TIMESTAMP(3) type. You can convert your Long type value into TIMESTAMP(3) using user-defined function. 

I'm sorry that Flink doesn't provide built-in function for this purpose, but will have one soon. 

For example: 

CREATE TABLE myTable (

 log_ts bigint,

 event_time AS my_func(log_ts),

 WATERMARK FOR event_time AS event_time - INTERVAL '1' SECOND

) WITH (

 ...

);

Here my_func is a UDF which converts BIGINT into TIMESTAMP(3).

Best,

Jark

On Mon, 30 Mar 2020 at 18:16, jingjing bai <[hidden email]> wrote:

Hi:

flinkers!

I try to upgrade our production to 1.10V from 1.9 which is our current product version.

in our case,the event_time is Long ,and we had implement this function which support long type  as a watermark in our inner version, it is a different from the official version on 1.10.    

on 1.10 version, flink had add watermark definition and I had drop our implement. 

and i encounter this problem too , 

how can I do in new version,  if is ,  I 'm not to migrate our inner implement to new version.