Hi, We are in the planning stages of a new reporting project, and the primary components of our tech stack will be Kafka, Flink, and either Elastic Search or OpenSearch clusters. Looking for any recommendations on compatible versions of these technologies to ensure smooth integration. Kafka: Can someone recommend the best Kafka version to use with Flink? Flink: Which version of Flink is suggested for Kafka & OpenSearch/ElasticSearch integration, and are there any special factors we should be aware of? OpenSearch/ElasticSearch: Finally, for data indexing and retrieval, we are considering OpenSearch or ElasticSearch . any thoughts on which version would be the most compatible and reliable when used with Kafka and Flink?

Kafka: The latest version is always preferred Flink: I think Opensearch connectors are available only for Flink 1.17 and above. Even I am not sure We have used both Opensearch and Elasticsearch at our org. Would prefer opensearch as it has better licensing terms. Functionality wise, both have very similar set of features