Although valid for compact tables, non-full (or empty) clustering key
prefixes are not handled for row keys when writing sstables. Only the
present components are written, consequently if the key is empty, it is
omitted entirely.
When parsing sstables, the parsing code unconditionally parses a full
prefix. This mis-match results in parsing failures, as the parser parses
part of the row content as a key resulting in a garbage key and
subsequent mis-parsing of the row content and maybe even subsequent
partitions.
Use the recently introduced corrupt_data_handler to handle rows with
such corrupt keys. This way, we avoid corrupting the sstables beyond
parsing and the rows are also kept around in system.corrupt_data for
later inspection and possible recovery.
(cherry picked from commit 592ca789e2)
cd97f4c4c3