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b7212620f9
Use all shards to upload snapshot files to S3. By using the sharded sstables_manager_for_table infrastructure. Refs #22460 Quick perf comparison =========================================== Release build, master, smp-16, mem-32GiB Bytes: 2342880184, backup time: 9.51 s =========================================== Release build, this PR, smp-16, mem-32GiB Bytes: 2342891015, backup time: 1.23 s =========================================== Signed-off-by: Benny Halevy <bhalevy@scylladb.com> Co-authored-by: Ernest Zaslavsky <ernest.zaslavsky@scylladb.com>