upsert operate and i get two delta message from kafka，first is insert ，second is delete，message order is wrong？

[wnh5]

i set mq.type=kafka
upsert a record in milvus
but i get two delta message from kafka，first is insert and second is delete，is message order wrong？

[yhmo]

The order doesn't matter. The upsert operation has a timestamp, the insert message tells datanode to insert the data after this timestamp, the delete message tells datanode to delete the pk before this timestamp.

[xiaofan-luan]

i set mq.type=kafka upsert a record in milvus but i get two delta message from kafka，first is insert and second is delete，is message order wrong？

They should be always consumed in a single pack