Routing XREADGROUP command in Redis cluster

[adiamzn]

Bug Report

Current Behavior

When using redis cluster,
it seems that the hash slot to which the XREADGROUP command is routed to is calculated using the consumer group rather than the stream.
This can be seen here xreadgroup in RedisCommandBuilder. where consumer.group is added to args with addKey.

Expected behavior/code

The XREADGROUP command should be routed based on stream and not consumer group.

Environment

• Lettuce version(s): 6.1.8.RELEASE
• Redis version: 6.x

Possible Solution

perhaps converting the consumer group and consumer name to strings and adding to xreadargs with add() instead of addKey()

[mp911de]

That's a bug. The consumer group could be a byte[] or a String and we want to give users a sense of flexibility here.