[KAFKA-1087] Empty topic list causes consumer to fetch metadata of all topics

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.8.0
• Assignee: Swapnil Ghike
• Reporter: Swapnil Ghike
• Created: 15/Oct/13 00:32
• Updated: 15/Oct/13 16:31
• Resolved: 15/Oct/13 16:31

Description

The ClientUtils fetches metadata for all topics if the topic set is empty.

If the topic list of a consumer is empty, the following happens if a rebalance is triggered:

• The fetcher is restarted, fetcher.startConnections() starts a LeaderFinderThread
• LeaderFinderThread waits on a condition
• fetcher.startConnections() signals the aforementioned condition
• LeaderFinderThread obtains metadata for all topics since the topic list is empty.