[KAFKA-8699] rack aware replica, found rack with two replicas

• Type: Bug
• Status: Open
• Priority: Critical
• Resolution: Unresolved
• Affects Version/s: 0.10.0.0
• Component/s: core
• Labels: assignment rack-awareness
• Assignee: Unassigned
• Reporter: abdessamad
• Created: 23/Jul/19 14:24
• Updated: 13/Aug/19 12:38

Description

Hi everyone,

Currently we run KAFKA in production with 6 racks, topic are created with replica factor of 3, the rack aware replica assignment is set properly but we encouter an issue when we check the location of replicas,

rack1 -> broker(1,2)

rack2 -> broker(3)

rack3 -> broker(4)

rack4 -> broker(5)
....
we have some topics with :

topicA -> partition 0  -> broker (1,2,3) not expected

               partition 1  -> broker (3,5,4)

               partition 2  -> broker (5,3,2)

               partition 3  -> broker (5,2,1) not expected
....
is location true ? if not do you have any idea why this issue happen and how we can fix it.

 

Many thanks, any help would be greatly appreciated.