Thanks for opening this discussion, Bruno! I wonder if it would be ok to simply drop that config value in 3.0 instead of 4.0.
Config values are a bit different than Java APIs, since many users would be using property files or string constants instead of referencing the "official" constants defined in StreamsConfig.java. As a result, we can expect the deprecation warning on the java constant to be only marginally effective. Plus, the config value "latest" has been the default already. I don't think it's a stretch for users of the "0.10.0-2.4" config value to have seen this coming and to have migrated to "latest" already. If you do agree that we can treat it as having been deprecated since 2.5, I'd further suggest that we no longer need the "built.in.metrics.version" config at all. WDYT? Thanks, John On Thu, 2021-05-20 at 13:57 +0200, Bruno Cadonna wrote: > Hi, > > I would like to propose KIP-743 to deprecate the old structures of the > built-in metrics in Streams. > > https://cwiki.apache.org/confluence/x/uIfOCg > > Best, > Bruno
