Remove MYSQL_TABLESPACES.

MySQL 5.7 introduced partial support for user-created shared tablespaces
(for example, import and export are not supported).

MariaDB Server does not support tablespaces at this point of time.
Let us remove most InnoDB code and data structures that is related
to shared tablespaces.

mysql-test/suite/innodb/r/innodb-alter-discard.result

@@ -5,7 +5,7 @@ call mtr.add_suppression("InnoDB: Operating system error number .* in a file ope
 call mtr.add_suppression("InnoDB: The error means the system cannot find the path specified.");
 call mtr.add_suppression("InnoDB: If you are installing InnoDB, remember that you must create directories yourself, InnoDB does not create them.");
 call mtr.add_suppression("InnoDB: Cannot open datafile for read-only: './test/t.ibd' OS error: .*");
-call mtr.add_suppression("InnoDB: Ignoring tablespace `test/t` because it could not be opened.");
+call mtr.add_suppression("InnoDB: Ignoring tablespace for `test`.`t` because it could not be opened.");
 call mtr.add_suppression("InnoDB: Cannot calculate statistics for table .* because the .ibd file is missing. Please refer to .*");
 call mtr.add_suppression("InnoDB: Error: trying to open a table, but could not$");
 call mtr.add_suppression("MySQL is trying to open a table handle but the \.ibd file for$");

mysql-test/suite/innodb/t/innodb-alter-discard.test

@@ -29,7 +29,7 @@ call mtr.add_suppression("InnoDB: Operating system error number .* in a file ope
 call mtr.add_suppression("InnoDB: The error means the system cannot find the path specified.");
 call mtr.add_suppression("InnoDB: If you are installing InnoDB, remember that you must create directories yourself, InnoDB does not create them.");
 call mtr.add_suppression("InnoDB: Cannot open datafile for read-only: './test/t.ibd' OS error: .*");
-call mtr.add_suppression("InnoDB: Ignoring tablespace `test/t` because it could not be opened.");
+call mtr.add_suppression("InnoDB: Ignoring tablespace for `test`.`t` because it could not be opened.");
 call mtr.add_suppression("InnoDB: Cannot calculate statistics for table .* because the .ibd file is missing. Please refer to .*");
 call mtr.add_suppression("InnoDB: Error: trying to open a table, but could not$");
 call mtr.add_suppression("MySQL is trying to open a table handle but the \.ibd file for$");

storage/innobase/btr/btr0btr.cc

@@ -338,7 +338,7 @@ btr_root_adjust_on_import(
 			ulint	flags = dict_tf_to_fsp_flags(
 				table->flags, false);
 			ulint	fsp_flags = fil_space_get_flags(table->space);
-			err = fsp_flags_are_equal(flags, fsp_flags)
+			err = flags == fsp_flags
 			      ? DB_SUCCESS : DB_CORRUPTION;
 		}
 	} else {

storage/innobase/dict/dict0crea.cc

@@ -377,75 +377,6 @@ dict_build_table_def_step(
 	return(err);
 }
 
-/** Build a tablespace to store various objects.
-@param[in,out]	tablespace	Tablespace object describing what to build.
-@return DB_SUCCESS or error code. */
-dberr_t
-dict_build_tablespace(
-	Tablespace*	tablespace)
-{
-	dberr_t		err	= DB_SUCCESS;
-	mtr_t		mtr;
-	ulint		space = 0;
-
-	ut_ad(mutex_own(&dict_sys->mutex));
-	ut_ad(tablespace);
-
-        DBUG_EXECUTE_IF("out_of_tablespace_disk",
-                         return(DB_OUT_OF_FILE_SPACE););
-	/* Get a new space id. */
-	dict_hdr_get_new_id(NULL, NULL, &space, NULL, false);
-	if (space == ULINT_UNDEFINED) {
-		return(DB_ERROR);
-	}
-	tablespace->set_space_id(space);
-
-	Datafile* datafile = tablespace->first_datafile();
-
-	/* We create a new generic empty tablespace.
-	We initially let it be 4 pages:
-	- page 0 is the fsp header and an extent descriptor page,
-	- page 1 is an ibuf bitmap page,
-	- page 2 is the first inode page,
-	- page 3 will contain the root of the clustered index of the
-	first table we create here. */
-
-	err = fil_ibd_create(
-		space,
-		tablespace->name(),
-		datafile->filepath(),
-		tablespace->flags(),
-		FIL_IBD_FILE_INITIAL_SIZE,
-		tablespace->encryption_mode(),
-		tablespace->key_id());
-
-	if (err != DB_SUCCESS) {
-		return(err);
-	}
-
-	/* Update SYS_TABLESPACES and SYS_DATAFILES */
-	err = dict_replace_tablespace_and_filepath(
-		tablespace->space_id(), tablespace->name(),
-		datafile->filepath(), tablespace->flags());
-	if (err != DB_SUCCESS) {
-		os_file_delete(innodb_data_file_key, datafile->filepath());
-		return(err);
-	}
-
-	mtr_start(&mtr);
-	mtr.set_named_space(space);
-
-	/* Once we allow temporary general tablespaces, we must do this;
-	mtr_set_log_mode(&mtr, MTR_LOG_NO_REDO); */
-	ut_a(!FSP_FLAGS_GET_TEMPORARY(tablespace->flags()));
-
-	fsp_header_init(space, FIL_IBD_FILE_INITIAL_SIZE, &mtr);
-
-	mtr_commit(&mtr);
-
-	return(err);
-}
-
 /** Builds a tablespace to contain a table, using file-per-table=1.
 @param[in,out]	table	Table to build in its own tablespace.
 @param[in]	node	Table create node
@@ -554,15 +485,7 @@ dict_build_tablespace_for_table(
 			return(DB_ERROR);
 		}
 	} else {
-		/* We do not need to build a tablespace for this table. It
-		is already built.  Just find the correct tablespace ID. */
-
-		if (DICT_TF_HAS_SHARED_SPACE(table->flags)) {
-			ut_ad(table->tablespace != NULL);
-
-			ut_ad(table->space == fil_space_get_id_by_name(
-				table->tablespace()));
-		} else if (dict_table_is_temporary(table)) {
+		if (dict_table_is_temporary(table)) {
 			/* Use the shared temporary tablespace.
 			Note: The temp tablespace supports all non-Compressed
 			row formats whereas the system tablespace only

storage/innobase/dict/dict0dict.cc

@@ -7268,22 +7268,14 @@ dict_tf_to_fsp_flags(
 				 DICT_TF_HAS_ATOMIC_BLOBS(table_flags);
 	page_size_t	page_size = dict_tf_get_page_size(table_flags);
 	bool		has_data_dir = DICT_TF_HAS_DATA_DIR(table_flags);
-	bool		is_shared = DICT_TF_HAS_SHARED_SPACE(table_flags);
 	bool		page_compression = DICT_TF_GET_PAGE_COMPRESSION(table_flags);
 	ulint		page_compression_level = DICT_TF_GET_PAGE_COMPRESSION_LEVEL(table_flags);
 
 	ut_ad(!page_size.is_compressed() || has_atomic_blobs);
 
-	/* General tablespaces that are not compressed do not get the
-	flags for dynamic row format (POST_ANTELOPE & ATOMIC_BLOBS) */
-	if (is_shared && !page_size.is_compressed()) {
-		has_atomic_blobs = false;
-	}
-
 	ulint		fsp_flags = fsp_flags_init(page_size,
 						   has_atomic_blobs,
 						   has_data_dir,
-						   is_shared,
 						   is_temp,
 						   0,
 						   0,