v.23.4Improvement

Added Retries for Data Loading in MergeTree Tables

Added retries to loading of data parts in MergeTree tables in case of retryable errors. #48442 (Anton Popov).
Added automatic retries for loading data parts in MergeTree tables upon encountering retryable errors.

Why it matters

This feature improves the robustness and reliability of MergeTree tables by handling transient errors during data part loading. It reduces failures caused by temporary issues, ensuring smoother operation and less manual intervention.

How to use it

This feature is enabled automatically when using MergeTree tables. Users do not need to configure anything explicitly to benefit from the retry mechanism during data part loading.