• RFC: RFC-5556: Write Returns Metadata #5556

Tasks

1. feat(core)!: implement write returns metadata #5562
   • modify struct Operator to return Result<Metadata> instead of Result<()> for write and write_with functions
   • modify struct Writer to return Result<Metadata> instead of Result<()> for the close() function
   • modify oio::Write trait to return Result<Metadata> instead of Result<()> for the close() function
   • modify oio::MultipartWrite trait to return Result<Metadata> instead of Result<()> for the complete_part() and write_once functions
   • add behavior tests
   • implement the logic for some services
     • s3
     • fs
     • monoiofs
2. implement the logic of returning metadata after writing for other services: Implement Write Returns Metadata for all services #5693