Jon Lee created KAFKA-6946:
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Summary: Keep the fetch session id for incremental fetch when
Key: KAFKA-6946
URL: https://issues.apache.org/jira/browse/KAFKA-6946
Project: Kafka
Issue Type: Improvement
Components: core
Affects Versions: 2.0.0
Reporter: Jon Lee
The current patch for KAFKA-6028 (KIP-219) sends a FetchResponse with
INVALID_SESSION_ID if the response needs to be throttled due to quota
violation. If it is for incremental fetch, this will make the client reset its
session and send a full fetch request next time. This is not a correctness
issue, but it may affect performance when fetches are throttled.
In case of incremental fetch, a throttled response should use the same session
id as before so that the next unthrottled response can be in the same session.
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