Dana Powers created KAFKA-5465: ---------------------------------- Summary: FetchResponse v0 does not return any messages when max_bytes smaller than v2 message set Key: KAFKA-5465 URL: https://issues.apache.org/jira/browse/KAFKA-5465 Project: Kafka Issue Type: Bug Affects Versions: 0.11.0.0 Reporter: Dana Powers Priority: Minor
In prior releases, when consuming uncompressed messages FetchResponse v0 will returns a message if it is smaller than the max_bytes sent in the FetchRequest. In 0.11.0.0 RC0, when messages are stored as v2 internally, the response will be empty unless the full message set is smaller than max_bytes. In some configurations, this may cause some old consumers to get stuck on large messages where previously they were able to make progress one message at a time. For example, when I produce 10 5KB messages using ProduceRequest v0 and then attempt FetchRequest v0 with partition max bytes = 6KB (larger than a single message but smaller than all 10 messages together), I get an empty message set from 0.11.0.0. Previous brokers would have returned a single message. -- This message was sent by Atlassian JIRA (v6.4.14#64029)