Is outputting from components other than sinks or side outputs a no-no ?

Posted by Tom Fennelly on
URL: http://deprecated-apache-flink-user-mailing-list-archive.369.s1.nabble.com/Is-outputting-from-components-other-than-sinks-or-side-outputs-a-no-no-tp36943.html

Hi.

What are the negative side effects of (for example) a filter function occasionally making a call out to a DB ? Is this a big no-no and should all outputs be done through sinks and side outputs, no exceptions ?

Regards,

Tom.