v.25.11Improvement

Set default s3_retry_attempts to 500

Set default s3_retry_attempts to 500 for 25.6 to make sure backups succeed when there's an S3 repartitioning and S3 responds with slow-down errors for more than 10 minutes. #89051 (Nikita Mikhaylov).
In ClickHouse version 25.6, the default value of s3_retry_attempts has been increased to 500 to improve the reliability of backups when interacting with S3 storage.

Why it matters

This change addresses issues caused by S3 repartitioning events where S3 responds with slow-down errors for extended periods (over 10 minutes). By increasing the retry attempts, backups are more likely to succeed without interruption.

How to use it

Users do not need to perform any manual configuration, as the default setting of s3_retry_attempts is automatically increased to 500 in version 25.6. For custom setups, this parameter can still be adjusted in the configuration file if needed.