[KAFKA-169] Layering violations in Kafka code

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Won't Fix
• Component/s: core
• Assignee: Unassigned
• Reporter: Jay Kreps
• Created: 25/Oct/11 04:31
• Updated: 17/Jul/14 21:49
• Resolved: 17/Jul/14 21:49

Description

I am noticing lot of layering violations creeping into the code.

For example the log implementation depends on zookeeper code now, the network server depends on the kafka api, etc. This stuff is messy and makes it hard to test or reason about the pieces in isolation.

I have run a quick analysis on the imports to look at problems and there are a few. Let's try to keep this graph in good shape and think about the layering in the code.