v.23.8Experimental Feature
Enable Parallel Reading from Replicas in Distributed Tables
Enable parallel reading from replicas over distributed table. Related to #49708. #53005 (Igor Nikonov).
Why it matters
This feature improves query performance and fault tolerance by allowing simultaneous data retrieval from multiple replicas of a distributed table. It reduces latency and balances load across replicas, enhancing data availability and query efficiency.How to use it
To use this feature, ensure yourDISTRIBUTED table is configured with replicas. The system will automatically perform parallel reading from these replicas when executing queries, with no changes needed to the query syntax.