Severity: high
co_await table_s.main_sstable_set() was called solely to get the
sstable count for a debug log message. This performs async I/O on
every LCS compaction even when debug logging is disabled. Wrap in
an is_enabled() guard.
AI-assisted: OpenCode / Claude Opus 4.6
Signed-off-by: Yaniv Kaul <yaniv.kaul@scylladb.com>