[KAFKA-154] ZK consumer may lose a chunk worth of message during rebalance in some rare cases

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.7
• Fix Version/s: 0.7
• Component/s: core
• Assignee: Jun Rao
• Reporter: Jun Rao
• Created: 11/Oct/11 17:34
• Updated: 15/Oct/11 07:33
• Resolved: 11/Oct/11 19:12

Description

Occasionally, we have see errors with the following message in the consumer log after a rebalance happens.
consumed offset: xxx doesn't match fetch offset: yyy for topicz

The consumer offset xxx should always match the fetch offset yyy.