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Status

Current stateadopt

Discussion threadhere

Votehere

JIRA: KAFKA-6161 - Getting issue details... STATUS

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Motivation

In most cases the method close() and configure() are useless for kafka users. Since kafka 2.x+ is up on jdk8, we can add the default implementation in order to enable kafka user to write less code to implement custom Serializer, Deserializer, and Serde.

Proposed Changes && Public Interfaces

In org.apache.kafka.common.serialization.Serde, org.apache.kafka.common.serialization.Serializer and org.apache.kafka.common.serialization.Deserializer, we will add empty implementations to close() and configure().

Serde.java
default void configure(Map<String, ?> configs, boolean isKey) {
  // intentionally left blank
}
default void close() {
  // intentionally left blank
}
Serializer
public interface Serializer<T> extends Closeable {
 default void configure(Map<String, ?> configs, boolean isKey) {
    // intentionally left blank
  }
  default void close() {
    // intentionally left blank
  }
}
Deserializer
public interface Deserializer<T> extends Closeable {
  default void configure(Map<String, ?> configs, boolean isKey) {
    // intentionally left blank
  }
  default void close() {
    // intentionally left blank
  }
}

Compatibility, Deprecation, and Migration Plan

  • The change of this KIP is backward compatible since the default implementation won't break the BC and SC
  • No compiler error happens even if close() or configure() isn't implemented. 

Rejected Alternatives

None

  • No labels