Added support for more functions when using partitioned S3 tables

MDEV-22088 S3 partitioning support

All ALTER PARTITION commands should now work on S3 tables except

REBUILD PARTITION
TRUNCATE PARTITION
REORGANIZE PARTITION

In addition, PARTIONED S3 TABLES can also be replicated.
This is achived by storing the partition tables .frm and .par file on S3
for partitioned shared (S3) tables.

The discovery methods are enchanced by allowing engines that supports
discovery to also support of the partitioned tables .frm and .par file

Things in more detail

- The .frm and .par files of partitioned tables are stored in S3 and kept
  in sync.
- Added hton callback create_partitioning_metadata to inform handler
  that metadata for a partitoned file has changed
- Added back handler::discover_check_version() to be able to check if
  a table's or a part table's definition has changed.
- Added handler::check_if_updates_are_ignored(). Needed for partitioning.
- Renamed rebind() -> rebind_psi(), as it was before.
- Changed CHF_xxx hadnler flags to an enum
- Changed some checks from using table->file->ht to use
  table->file->partition_ht() to get discovery to work with partitioning.
- If TABLE_SHARE::init_from_binary_frm_image() fails, ensure that we
  don't leave any .frm or .par files around.
- Fixed that writefrm() doesn't leave unusable .frm files around
- Appended extension to path for writefrm() to be able to reuse to function
  for creating .par files.
- Added DBUG_PUSH("") to a a few functions that caused a lot of not
  critical tracing.

1 files changed, 5 insertions, 2 deletions

diff --git a/sql/sql_rename.cc b/sql/sql_rename.cc
index 0200113deae..5fafd9fa28a 100644
--- a/sql/sql_rename.cc
+++ b/sql/sql_rename.cc
@@ -335,6 +335,7 @@ do_rename(THD *thd, TABLE_LIST *ren_table, const LEX_CSTRING *new_db,
     if (hton->flags & HTON_TABLE_MAY_NOT_EXIST_ON_SLAVE)
       *force_if_exists= 1;
 
+    thd->replication_flags= 0;
     if (!(rc= mysql_rename_table(hton, &ren_table->db, &old_alias,
                                  new_db, &new_alias, 0)))
     {
@@ -357,6 +358,8 @@ do_rename(THD *thd, TABLE_LIST *ren_table, const LEX_CSTRING *new_db,
                                   &ren_table->db, &old_alias, NO_FK_CHECKS);
       }
     }
+    if (thd->replication_flags & OPTION_IF_EXISTS)
+      *force_if_exists= 1;
   }
   else
   {
@@ -398,8 +401,8 @@ do_rename(THD *thd, TABLE_LIST *ren_table, const LEX_CSTRING *new_db,
     empty.
 
   RETURN
-    false     Ok
-    true      rename failed
+    0         Ok
+    table     pointer to the table list element which rename failed
 */
 
 static TABLE_LIST *