MDEV-34223 Innodb - add status variable for number of bulk inserts

- Added a counter innodb_num_bulk_insert_operation in
INFORMATION_SCHEMA.GLOBAL_STATUS. This counter is incremented
whenever a InnoDB undergoes bulk insert operation.

- Change the innodb_instant_alter_column to atomic variable.

mysql-test/suite/innodb/r/innodb_status_variables.result

@@ -124,3 +124,4 @@ INNODB_ENCRYPTION_N_ROWLOG_BLOCKS_DECRYPTED
 INNODB_ENCRYPTION_N_TEMP_BLOCKS_ENCRYPTED
 INNODB_ENCRYPTION_N_TEMP_BLOCKS_DECRYPTED
 INNODB_ENCRYPTION_NUM_KEY_REQUESTS
+INNODB_BULK_OPERATIONS

mysql-test/suite/innodb/r/insert_into_empty.result

@@ -20,9 +20,17 @@ DROP TEMPORARY TABLE t;
 SET @save_ahi = @@global.innodb_adaptive_hash_index;
 SET GLOBAL innodb_adaptive_hash_index = 1;
 CREATE TABLE t1(f1 INT NOT NULL)ENGINE=InnoDB;
+SET @old_bulk_op=
+(SELECT variable_value FROM information_schema.global_status
+WHERE variable_name = 'innodb_bulk_operations');
 BEGIN;
 INSERT INTO t1 SELECT * FROM seq_1_to_65536;
 ROLLBACK;
+SELECT variable_value-@old_bulk_op bulk_operations
+FROM information_schema.global_status
+WHERE variable_name = 'innodb_bulk_operations';
+bulk_operations
+1
 CHECK TABLE t1;
 Table	Op	Msg_type	Msg_text
 test.t1	check	status	OK

mysql-test/suite/innodb/t/insert_into_empty.test

@@ -26,9 +26,19 @@ DROP TEMPORARY TABLE t;
 SET @save_ahi = @@global.innodb_adaptive_hash_index;
 SET GLOBAL innodb_adaptive_hash_index = 1;
 CREATE TABLE t1(f1 INT NOT NULL)ENGINE=InnoDB;
+
+SET @old_bulk_op=
+(SELECT variable_value FROM information_schema.global_status
+WHERE variable_name = 'innodb_bulk_operations');
+
 BEGIN;
 INSERT INTO t1 SELECT * FROM seq_1_to_65536;
 ROLLBACK;
+
+SELECT variable_value-@old_bulk_op bulk_operations
+FROM information_schema.global_status
+WHERE variable_name = 'innodb_bulk_operations';
+
 CHECK TABLE t1;
 --echo #
 --echo # MDEV-24832 Root page AHI Removal fails fails during

storage/innobase/handler/ha_innodb.cc

@@ -1061,7 +1061,7 @@ static SHOW_VAR innodb_status_variables[]= {
   {"defragment_count", &export_vars.innodb_defragment_count, SHOW_SIZE_T},
 
   {"instant_alter_column",
-   &export_vars.innodb_instant_alter_column, SHOW_ULONG},
+   &export_vars.innodb_instant_alter_column, SHOW_SIZE_T},
 
   /* Online alter table status variables */
   {"onlineddl_rowlog_rows",
@@ -1104,6 +1104,9 @@ static SHOW_VAR innodb_status_variables[]= {
   {"encryption_num_key_requests", &export_vars.innodb_encryption_key_requests,
    SHOW_LONGLONG},
 
+  /* InnoDB bulk operations */
+  {"bulk_operations", &export_vars.innodb_bulk_operations, SHOW_SIZE_T},
+
   {NullS, NullS, SHOW_LONG}
 };
 

storage/innobase/handler/handler0alter.cc

@@ -7355,6 +7355,7 @@ prepare_inplace_alter_table_dict(
 		ut_d(dict_table_check_for_dup_indexes(user_table,
 						      CHECK_PARTIAL_OK));
 		if (ctx->need_rebuild()) {
+			export_vars.innodb_bulk_operations++;
 			ctx->new_table->acquire();
 		}
 

storage/innobase/include/srv0srv.h

@@ -713,7 +713,10 @@ struct export_var_t{
 						operations*/
 
 	/** Number of instant ALTER TABLE operations that affect columns */
-	ulong innodb_instant_alter_column;
+	Atomic_counter<ulint> innodb_instant_alter_column;
+
+	/* Number of InnoDB bulk operations */
+	Atomic_counter<ulint> innodb_bulk_operations;
 
 	ulint innodb_onlineddl_rowlog_rows;	/*!< Online alter rows */
 	ulint innodb_onlineddl_rowlog_pct_used; /*!< Online alter percentage

storage/innobase/row/row0ins.cc

@@ -2749,6 +2749,7 @@ row_ins_clust_index_entry_low(
 #else /* BTR_CUR_HASH_ADAPT */
 			index->table->bulk_trx_id = trx->id;
 #endif /* BTR_CUR_HASH_ADAPT */
+			export_vars.innodb_bulk_operations++;
 		}
 
 		trx->bulk_insert = true;