[KAFKA-5093] Load only batch header when rebuilding producer ID map

• Type: Sub-task
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Fix Version/s: 0.11.0.0
• Labels: exactly-once
• Assignee: Jason Gustafson
• Reporter: Jason Gustafson
• Created: 20/Apr/17 00:09
• Updated: 31/May/17 21:15
• Resolved: 31/May/17 21:14

Description

When rebuilding the producer ID map for KIP-98, we unnecessarily load the full record data into memory when scanning through the log. It would be better to only load the batch header since it is all that is needed.

Issue Links

• links to: GitHub Pull Request #3160