v.20.4New Feature

Support for Parallel Distributed INSERT SELECT in ClickHouse

Official CH changelog text
Support parallel distributed INSERT SELECT. #9759 (vxider)
Introduces support for parallel execution of distributed INSERT SELECT queries, enabling concurrent data insertion across distributed tables.

Why it matters

This feature addresses the limitation of sequential execution when performing distributed INSERT SELECT operations. It improves performance and efficiency in data loading by leveraging parallelism, leading to faster data ingestion in distributed environments.

How to use it

Users can perform distributed INSERT SELECT queries as usual on distributed tables. The system automatically handles parallel execution without additional configuration, optimizing the data insertion process.

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