v.21.9Improvement
Allow Reuse of Shard Connections Across Clusters
Allow to reuse connections of shards among different clusters. It also avoids creating new connections when using cluster table function. #26318 (Amos Bird).Why it matters
This feature improves connection management efficiency by enabling connection reuse across clusters, reducing overhead and resource consumption when querying with thecluster table function.How to use it
Users do not need to take special action; the connection reuse behavior is applied automatically when executing queries that involve thecluster table function across different clusters.