+1 That sounds like a good idea. Does it make sense to add a validation
step to prevent new configuration parameters from running into the same
issue (with whitelisting the existing ones)?

Matthias

On Thu, Sep 22, 2022 at 6:35 AM Yun Tang <myas...@live.com> wrote:

> +1
>
> This is the prerequisite to help us to introduce a standard YAML parser,
> which has been discussed in different tickets [1] [2].
>
>
> [1] https://issues.apache.org/jira/browse/FLINK-23620
> [2] https://issues.apache.org/jira/browse/FLINK-29366
>
> Best
> Yun Tang
> ________________________________
> From: Yang Wang <danrtsey...@gmail.com>
> Sent: Thursday, September 22, 2022 11:00
> To: dev@flink.apache.org <dev@flink.apache.org>
> Subject: Re: [DISCUSS][FLINK-29372] Add a suffix to keys that violate YAML
> spec
>
> This will make it possible to replace the current rough implementation[1]
> with a common yaml parser.
> And then we could avoid some unexpected behaviors[2].
>
> +1
>
> [1].
>
> https://github.com/apache/flink/blob/master/flink-core/src/main/java/org/apache/flink/configuration/GlobalConfiguration.java#L179
> [2]. https://issues.apache.org/jira/browse/FLINK-15358
>
> Best,
> Yang
>
> Konstantin Knauf <kna...@apache.org> 于2022年9月22日周四 04:26写道:
>
> > Make sense to me. It is moving us in the right direction and makes it
> > possible to drop these keys with Flink 2.0 if that ever happens :)
> >
> > Am Mi., 21. Sept. 2022 um 16:06 Uhr schrieb Chesnay Schepler <
> > ches...@apache.org>:
> >
> > > Hi,
> > >
> > > we have a small number of options in Flink whose key is a prefix of
> > > other keys.
> > >
> > > This violates the YAML spec; when you view the options as a tree only
> > > leaf nodes may have properties.
> > >
> > > While this is a minor issue from our side I think this can be quite
> > > annoying for users, since it means you can't read or validate a Flink
> > > config with standard yaml tools.
> > >
> > > I'd like to add a suffix to those keys to resolve this particular
> > > problem, while still supporting the previous keys (as deprecated).
> > >
> > > AFAICT there aren't any risks here,
> > > except if users have a search&replace step for one of these options in
> > > the default config of the Flink distribution;
> > > however this seems unsafe in any case since the contents of the default
> > > config may change.
> > >
> > > This would also bring us a step closer to our goal of using a compliant
> > > YAML parser.
> > >
> >
> >
> > --
> > https://twitter.com/snntrable
> > https://github.com/knaufk
> >
>

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