Xavier Léauté created KAFKA-5966:
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Summary: Support ByteBuffer serialization in Kafka Streams
Key: KAFKA-5966
URL: https://issues.apache.org/jira/browse/KAFKA-5966
Project: Kafka
Issue Type: Improvement
Reporter: Xavier Léauté
Currently Kafka Streams only supports serialization using byte arrays. This
means we generate a lot of garbage and spend unnecessary time copying bytes,
especially when working with windowed state stores that rely on composite keys.
In many places in the code we have extract parts of the composite key to
deserialize the either the timestamp or the message key from the state store
key (e.g. the methods in WindowStoreUtils)
Having support for serde into/from ByteBuffers would allow us to reuse the
underlying bytearrays and just pass around slices of the underlying Buffers to
avoid the unnecessary copying.
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