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database: truncate_table_on_all_shards: set use_sstable_identifier to true

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To facilitate global sstable deduplication on backup.

Signed-off-by: Benny Halevy <bhalevy@scylladb.com>
This commit is contained in:
Benny Halevy
2025-11-23 15:33:43 +02:00
parent ff52550739
commit 19b6207f17
1 changed files with 5 additions and 1 deletions
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6
replica/database.cc
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@@ -2951,7 +2951,11 @@ future<> database::truncate_table_on_all_shards(sharded<database>& sharded_db, s
auto truncated_at = truncated_at_opt.value_or(db_clock::now());
auto name = snapshot_name_opt.value_or(
format("{:d}-{}", truncated_at.time_since_epoch().count(), cf.schema()->cf_name()));
auto opts = db::snapshot_options{}; // FIXME: use_sstable_identifier
// Use the sstable identifier in snapshot names to allow de-duplication of sstables
// at backup time even if they were migrated across shards or nodes and were renamed a given a new generation.
// We hard-code that here since we have no way to pass this option to auto-snapshot and
// it is always safe to use the sstable identifier for the sstable generation.
auto opts = db::snapshot_options{.use_sstable_identifier = true};
co_await table::snapshot_on_all_shards(sharded_db, table_shards, name, opts);
}