redis type_error ai_generated true

ERR: Invalid consumer group ID: group 'mygroup' does not exist

ID: redis/stream-consumer-group-invalid-id

Also available as: JSON · Markdown · 中文
92%Fix Rate
84%Confidence
1Evidence
2024-02-28First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
Redis 6.2 active — — —
Redis 7.0 active — — —
Redis 7.2 active — — —

Root Cause

A command referenced a consumer group that has not been created on the specified stream key.

generic

中文

命令引用了一个在指定流键上尚未创建的消费者组。

Official Documentation

https://redis.io/docs/latest/develop/data-types/streams/

Workarounds

  1. 95% success Create the consumer group with XGROUP CREATE mystream mygroup $ (or 0 for all messages). Example: redis-cli XGROUP CREATE mystream mygroup $. 
    Create the consumer group with XGROUP CREATE mystream mygroup $ (or 0 for all messages). Example: redis-cli XGROUP CREATE mystream mygroup $.
  2. 90% success Verify the group exists with XINFO GROUPS mystream before using it in XREADGROUP. 
    Verify the group exists with XINFO GROUPS mystream before using it in XREADGROUP.

中文步骤

  1. 使用 XGROUP CREATE mystream mygroup $（或 0 表示所有消息）创建消费者组。例如：redis-cli XGROUP CREATE mystream mygroup $。
  2. 在使用 XREADGROUP 之前，使用 XINFO GROUPS mystream 验证组是否存在。

Dead Ends

Common approaches that don't work:

  1. Recreate the stream key with the same name 60% fail

    Deletes all stream data and existing consumer groups; the group still won't exist unless explicitly created.

  2. Use XINFO GROUPS mystream to list groups, but not create one 80% fail

    Only lists groups; does not resolve the missing group error.