[KAFKA-7830] Convert Kafka RPCs to use automatically generated code

• Type: Improvement
• Status: Reopened
• Priority: Major
• Resolution: Unresolved
• Component/s: clients, core
• Assignee: Colin McCabe
• Reporter: Colin McCabe
• Created: 16/Jan/19 18:57
• Updated: 05/Jul/19 15:37

Description

KAFKA-7609 added a way of automatically generating code for reading and writing Kafka RPC message types from JSON schemas.

Automatically generated code is preferrable to manually written serialization code.

• * It is less tedious and error-prone to use than hand-written code.
• For developers writing Kafka clients in other languages, the JSON schemas are useful in a way that the java serialization code is not.
• It will eventually be possible to automatically validate aspects of cross-version compatibility, when using JSON message schemas.
• Once all of the RPCs are converted, we can drop using Structs in favor of serializing directly to ByteBuffer, to reduce GC load.

This JIRA tracks converting the current hand-written message serialization code to automatically generated serialization.

Sub-Tasks

• Add error specifications to KAFKA-7609: Patch Available