Streamer without client node?

Hi. Is it good practice to start n ignite streamer in server mode without client?. If i use Kafka in the same consumer group i think the msg will be fetched without duplication. Thx

Transformation and sort dataset

Hi I currently store Vectors in ignite. I need tout compute thé distance between a référence Vector and all the stored one and After return thé 10 smallest. If thé référence dataset is Big (thé one that store Vector) , let Say 1,000,000,000 Whats thé best way to do this like with spark on a stream