If we have InnoDB pages there are two ways to learn how many records they contain:
- PAGE_N_RECS field in the page header
- Count records while walking over the list of records from infimum to supremum
In some previous revision of the recovery tool a short summary was added to a dump which is produced by the constraints_parser.
But if a page is lost and page_parser hasn’t found it, all records from this page are lost. In other words per-page recovery statistics gives us little idea about whether or not a recovered table is complete.
To cover this flaw a new tool index_check is introduced in …[Read more]