[KAFKA-2110] Doc: Clarify that max number of consumer instances is per consumer group

• Type: Improvement
• Status: Resolved
• Priority: Trivial
• Resolution: Fixed
• Fix Version/s: 0.9.0.0
• Environment: Online documentation:; http://kafka.apache.org/documentation.html#introduction
• Assignee: Peter Vandenabeele
• Reporter: Peter Vandenabeele
• Created: 08/Apr/15 20:19
• Updated: 08/Apr/15 21:16
• Resolved: 08/Apr/15 21:16

Description

Suggest to modify in the Introduction, section "Consumers" to clarify that the maximum amount of consumer instances is per consumer group:

"Note however that there cannot be more consumer instances than partitions."
=>
"Note however that there cannot be more consumer instances in a consumer group than partitions."

and

"... though this will mean only one consumer process."
=>
"... though this will mean only one consumer process per consumer group."