The config does not "do" anything. It's metadata that get's broadcasted to other Streams instances for IQ feature.
See this blog post for more details: https://www.confluent.io/blog/unifying-stream-processing-and-interactive-queries-in-apache-kafka/ Happy to answer any follow up question. -Matthias On 3/23/17 11:51 AM, Jon Yeargers wrote: > What does this config param do? > > I see it referenced / used in some samples and here ( > https://cwiki.apache.org/confluence/display/KAFKA/KIP-67%3A+Queryable+state+for+Kafka+Streams > ) >
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