This PR improves the handling of malformed SSTables during scrub and adds tests to validate the updated behavior.
When scrub is used, there is an increased chance of encountering malformed SSTables. These should not be retried as in regular compaction. Instead, they must be handled according to the selected scrub mode: in skip mode, in case of malformed_sstable_exception, invalid data or whole SSTable should be removed, in abort and segregate modes, the scrub process should abort.
Previously, all modes treated malformed_sstable_exception the same way, causing scrub to abort even when skip mode was selected. This PR updates the scrub logic to properly handle malformed SSTable exceptions based on the selected mode.
Unit tests are added to verify the intended behavior.
Fixesscylladb/scylladb#19059
Backport is not required, it is an improvement
Closesscylladb/scylladb#25828
* github.com:scylladb/scylladb:
sstable_compaction_test: add scrub tests for malformed SSTables
scrub: skip sstable on malformed sstable exception in skip mode
761a32927e