Randall Hauch created KAFKA-2593:
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Summary: KeyValueStores should not require use of the context's
default serializers and deserializers
Key: KAFKA-2593
URL: https://issues.apache.org/jira/browse/KAFKA-2593
Project: Kafka
Issue Type: Sub-task
Components: kafka streams
Reporter: Randall Hauch
Assignee: Randall Hauch
Fix For: 0.9.0.0
Currently the {{InMemoryKeyValueStore}} is only able to use the key and value
serializers and deserializers (aka, "serdes") from the {{ProcessingContext}}.
This means that a {{Processor}} implementation that wants to use the
{{InMemoryKeyValueStore}} can only do this if the key and value types match
those set up as the default serdes in the topology's configuration.
Additionally, the {{RocksDBKeyValueStore}} is only capable of {{byte[]}} keys
and values.
Both of these key-value stores should allow the component using them to specify
the serdes for both the keys and values. As a convenience, the current behavior
should still be supported, as should a way to infer the serdes for the
"built-in" serializers and deserializers (e.g., strings, integers, longs, and
byte arrays).
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