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65e42e4166
reconcilable_result_builder passes range tombstone changes to _rt_assembler using table schema, not query schema. This means that a tombstone with bounds (a; b), where a < b in query schema but a > b in table schema, will not be emitted from mutation_query. This is a very serious bug, because it means that such tombstones in reverse queries are not reconciled with data from other replicas. If *any* queried replica has a row, but not the range tombstone which deleted the row, the reconciled result will contain the deleted row. In particular, range deletes performed while a replica is down will not later be visible to reverse queries which select this replica, regardless of the consistency level. As far as I can see, this doesn't result in any persistent data loss. Only in that some data might appear resurrected to reverse queries, until the relevant range tombstone is fully repaired. This series fixes the bug and adds a minimal reproducer test. Fixes #10598 Closes scylladb/scylladb#16003 * github.com:scylladb/scylladb: mutation_query_test: test that range tombstones are sent in reverse queries mutation_query: properly send range tombstones in reverse queries