Matthias J. Sax created KAFKA-16279:
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Summary: Avoid leaking abstractions of `StateStore`
Key: KAFKA-16279
URL: https://issues.apache.org/jira/browse/KAFKA-16279
Project: Kafka
Issue Type: Improvement
Components: streams
Reporter: Matthias J. Sax
The `StateStore` interface is user facing and contains a few life-cycle
management methods (like `init()` and `close()`) – those methods are exposed
for users to develop custom state stores.
However, we also use `StateStore` as base interface for store-handles in the
PAPI, and thus life-cycle management methods are leaking into the PAPI (maybe
also others – would need a dedicated discussion which one we consider useful
for PAPI users and which not).
We should consider to change what we expose in the PAPI (atm, we only document
via JavaDocs that eg. `close()` should never be called; but it's of course not
ideal and would be better if `close()` et al. would not be expose for `PAPI`
users to begin with.)
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