MDEV-25004 Missing row in FTS_DOC_ID_INDEX during DELETE HISTORY

1. In case of system-versioned table add row_end into FTS_DOC_ID index
   in fts_create_common_tables() and innobase_create_key_defs().
   fts_n_uniq() returns 1 or 2 depending on whether the table is
   system-versioned.

   After this patch recreate of FTS_DOC_ID index is required for
   existing system-versioned tables. If you see this message in error
   log or server warnings: "InnoDB: Table db/t1 contains 2 indexes
   inside InnoDB, which is different from the number of indexes 1
   defined in the MariaDB" use this command to fix the table:

      ALTER TABLE db.t1 FORCE;

2. Fix duplicate history for secondary unique index like it was done
   in MDEV-23644 for clustered index (932ec586aad). In case of
   existing history row which conflicts with currently inseted row we
   check in row_ins_scan_sec_index_for_duplicate() whether that row
   was inserted as part of current transaction. In that case we
   indicate with DB_FOREIGN_DUPLICATE_KEY that new history row is not
   needed and should be silently skipped.

3. Some parts of MDEV-21138 (7410ff436e9) reverted. Skipping of
   FTS_DOC_ID index for history rows made problems with purge
   system. Now this is fixed differently by p.2.

4. wait_all_purged.inc checks that we didn't affect non-history rows
   so they are deleted and purged correctly.

Additional FTS fixes

  fts_init_get_doc_id(): exclude history rows from max_doc_id
  calculation. fts_init_get_doc_id() callback is used only for crash
  recovery.

  fts_add_doc_by_id(): set max value for row_end field.

  fts_read_stopword(): stopwords table can be system-versioned too. We
  now read stopwords only for current data.

  row_insert_for_mysql(): exclude history rows from doc_id validation.

  row_merge_read_clustered_index(): exclude history_rows from doc_id
  processing.

0 files changed, 0 insertions, 0 deletions