[KAFKA-5290] docs need clarification on meaning of 'committed' to the log

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Component/s: documentation
• Assignee: Edoardo Comar
• Reporter: Edoardo Comar
• Created: 19/May/17 09:28
• Updated: 20/Jun/17 21:23
• Resolved: 20/Jun/17 21:23

Description

The docs around
http://kafka.apache.org/documentation/#semantics
http://kafka.apache.org/documentation/#replication
say

A message is considered "committed" when all in sync replicas for that partition have applied it to their log. Only committed messages are ever given out to the consumer

I've always found that in need of clarification - as the producer acks setting is crucial in determining what committed means.

Based on conversations with rsivaram, apurva, vahid

Issue Links

• links to: GitHub Pull Request #3035