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## Problem In https://github.com/neondatabase/neon/pull/9897 we temporarily disabled the layer valid check because the current one only considers the end result of all compaction algorithms, but partial gc-compaction would temporarily produce an "invalid" layer map. part of https://github.com/neondatabase/neon/issues/9114 ## Summary of changes Allow LSN splits to overlap in the slow path check. Currently, the valid check is only used in storage scrubber (background job) and during gc-compaction (without taking layer lock). Therefore, it's fine for such checks to be a little bit inefficient but more accurate. --------- Signed-off-by: Alex Chi Z <chi@neon.tech> Co-authored-by: Arpad Müller <arpad-m@users.noreply.github.com>