* ddl, config: add a variable to control the max index length * config: update comments * config: tiny update comments * config,ddl: update tests Co-authored-by: pingcap-github-bot <sre-bot@pingcap.com>
* ddl, config: add a variable to control the max index length * config: update comments * config: tiny update comments * config,ddl: update tests Co-authored-by: pingcap-github-bot <sre-bot@pingcap.com>