You are correct. This is not possible atm. Note, that commits happen "under the hood" and users cannot commit explicitly. Users can only "request" as commit -- this implies that Kafka Streams will commit as soon as possible -- but when `context#commit()` returns, the commit is not done yet (it only sets a flag).
What is your use case for this? How would you want to use this from an API point of view? Feel free to open a feature request JIRA -- we don't have any plans to add this atm -- it's the first time anybody asks for this feature. If there is a JIRA, maybe somebody picks it up :) -Matthias On 3/3/18 6:51 AM, Stas Chizhov wrote: > Hi, > > There seems to be no way to commit custom metadata along with offsets from > within Kafka Streams. > Are there any plans to expose this functionality or have I missed something? > > Best regards, > Stanislav. >
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