mirror of
https://github.com/scylladb/scylladb.git
synced 2026-05-12 19:02:12 +00:00
f2f839b9cc
LCS reshape is compacting all levels if a single one breaks disjointness. That's unnecessary work because rewriting that single level is enough to restore disjointness. If multiple levels break disjointness, they'll each be reshaped in its own iteration, so reducing operation time for each step and disk space requirement, as input files can be released incrementally. Incremental compaction is not applied to reshape yet, so we need to avoid "major compaction", to avoid the space overhead. But space overhead is not the only problem, the inefficiency, when deciding what to reshape when overlapping is detected, motivated this patch. Fixes #12495. Signed-off-by: Raphael S. Carvalho <raphaelsc@scylladb.com> Closes #12496