MDEV-17171: RocksDB Tables do not have "Creation Date"

Support Create_time and Update_time for MyRocks tables.
- Create_time is stored in the MyRocks' internal data dictionary.
- Update_time is in-memory only (like in InnoDB).

storage/rocksdb/ha_rocksdb.cc

@@ -2306,6 +2306,8 @@ class Rdb_transaction {
   bool m_is_delayed_snapshot = false;
   bool m_is_two_phase = false;
 
+  std::unordered_set<Rdb_tbl_def*> modified_tables;
+
  private:
   /*
     Number of write operations this transaction had when we took the last
@@ -3001,6 +3003,25 @@ class Rdb_transaction {
   virtual void start_tx() = 0;
   virtual void start_stmt() = 0;
 
+ protected:
+  // Non-virtual functions with actions to be done on transaction start and
+  // commit.
+  void on_commit() {
+    time_t tm;
+    tm = time(nullptr);
+    for (auto &it : modified_tables) {
+      it->update_time = tm;
+    }
+    modified_tables.clear();
+  }
+  void on_rollback() {
+    modified_tables.clear();
+  }
+ public:
+  void log_table_write_op(Rdb_tbl_def *tbl) {
+    modified_tables.insert(tbl);
+  }
+
   void set_initial_savepoint() {
     /*
       Set the initial savepoint. If the first statement in the transaction
@@ -3185,7 +3206,9 @@ class Rdb_transaction_impl : public Rdb_transaction {
       goto error;
     }
 
+    on_commit();
   error:
+    on_rollback();
     /* Save the transaction object to be reused */
     release_tx();
 
@@ -3201,6 +3224,7 @@ class Rdb_transaction_impl : public Rdb_transaction {
 
  public:
   void rollback() override {
+    on_rollback();
     m_write_count = 0;
     m_insert_count = 0;
     m_update_count = 0;
@@ -3522,7 +3546,9 @@ class Rdb_writebatch_impl : public Rdb_transaction {
       res = true;
       goto error;
     }
+    on_commit();
   error:
+    on_rollback();
     reset();
 
     m_write_count = 0;
@@ -3555,6 +3581,7 @@ class Rdb_writebatch_impl : public Rdb_transaction {
   }
 
   void rollback() override {
+    on_rollback();
     m_write_count = 0;
     m_insert_count = 0;
     m_update_count = 0;
@@ -7699,6 +7726,8 @@ int ha_rocksdb::create_table(const std::string &table_name,
     goto error;
   }
 
+  m_tbl_def->put_creation_time(&dict_manager, batch, time(nullptr));
+
   err = dict_manager.commit(batch);
   if (err != HA_EXIT_SUCCESS) {
     dict_manager.unlock();
@@ -10335,6 +10364,8 @@ int ha_rocksdb::update_write_row(const uchar *const old_data,
     row_info.tx->incr_insert_count();
   }
 
+  row_info.tx->log_table_write_op(m_tbl_def);
+
   if (do_bulk_commit(row_info.tx)) {
     DBUG_RETURN(HA_ERR_ROCKSDB_BULK_LOAD);
   }
@@ -10814,6 +10845,7 @@ int ha_rocksdb::delete_row(const uchar *const buf) {
   }
 
   tx->incr_delete_count();
+  tx->log_table_write_op(m_tbl_def);
 
   if (do_bulk_commit(tx)) {
     DBUG_RETURN(HA_ERR_ROCKSDB_BULK_LOAD);
@@ -11012,6 +11044,12 @@ int ha_rocksdb::info(uint flag) {
         k->rec_per_key[j] = x;
       }
     }
+
+    stats.create_time = m_tbl_def->get_creation_time(&dict_manager);
+  }
+
+  if (flag & HA_STATUS_TIME) {
+    stats.update_time = m_tbl_def->update_time;
   }
 
   if (flag & HA_STATUS_ERRKEY) {

storage/rocksdb/mysql-test/rocksdb/include/bulk_load_unsorted.inc

@@ -121,12 +121,12 @@ set rocksdb_bulk_load=0;
 --remove_file $file
 
 # Make sure row count index stats are correct
---replace_column 6 # 7 # 8 # 9 #
+--replace_column 6 # 7 # 8 # 9 # 12 # 13 #
 SHOW TABLE STATUS WHERE name LIKE 't%';
 
 ANALYZE TABLE t1, t2, t3;
 
---replace_column 6 # 7 # 8 # 9 #
+--replace_column 6 # 7 # 8 # 9 # 12 # 13 #
 SHOW TABLE STATUS WHERE name LIKE 't%';
 
 # Make sure all the data is there.

storage/rocksdb/mysql-test/rocksdb/r/bulk_load_unsorted.result

@@ -72,9 +72,9 @@ LOAD DATA INFILE <input_file> INTO TABLE t3;
 set rocksdb_bulk_load=0;
 SHOW TABLE STATUS WHERE name LIKE 't%';
 Name	Engine	Version	Row_format	Rows	Avg_row_length	Data_length	Max_data_length	Index_length	Data_free	Auto_increment	Create_time	Update_time	Check_time	Collation	Checksum	Create_options	Comment	Max_index_length	Temporary
-t1	ROCKSDB	10	Fixed	2500000	#	#	#	#	0	NULL	NULL	NULL	NULL	latin1_swedish_ci	NULL			0	N
-t2	ROCKSDB	10	Fixed	2500000	#	#	#	#	0	NULL	NULL	NULL	NULL	latin1_swedish_ci	NULL			0	N
-t3	ROCKSDB	10	Fixed	2500000	#	#	#	#	0	NULL	NULL	NULL	NULL	latin1_swedish_ci	NULL	partitioned		0	N
+t1	ROCKSDB	10	Fixed	2500000	#	#	#	#	0	NULL	#	#	NULL	latin1_swedish_ci	NULL			0	N
+t2	ROCKSDB	10	Fixed	2500000	#	#	#	#	0	NULL	#	#	NULL	latin1_swedish_ci	NULL			0	N
+t3	ROCKSDB	10	Fixed	2500000	#	#	#	#	0	NULL	#	#	NULL	latin1_swedish_ci	NULL	partitioned		0	N
 ANALYZE TABLE t1, t2, t3;
 Table	Op	Msg_type	Msg_text
 test.t1	analyze	status	Engine-independent statistics collected
@@ -85,9 +85,9 @@ test.t3	analyze	status	Engine-independent statistics collected
 test.t3	analyze	status	OK
 SHOW TABLE STATUS WHERE name LIKE 't%';
 Name	Engine	Version	Row_format	Rows	Avg_row_length	Data_length	Max_data_length	Index_length	Data_free	Auto_increment	Create_time	Update_time	Check_time	Collation	Checksum	Create_options	Comment	Max_index_length	Temporary
-t1	ROCKSDB	10	Fixed	2500000	#	#	#	#	0	NULL	NULL	NULL	NULL	latin1_swedish_ci	NULL			0	N
-t2	ROCKSDB	10	Fixed	2500000	#	#	#	#	0	NULL	NULL	NULL	NULL	latin1_swedish_ci	NULL			0	N
-t3	ROCKSDB	10	Fixed	2500000	#	#	#	#	0	NULL	NULL	NULL	NULL	latin1_swedish_ci	NULL	partitioned		0	N
+t1	ROCKSDB	10	Fixed	2500000	#	#	#	#	0	NULL	#	#	NULL	latin1_swedish_ci	NULL			0	N
+t2	ROCKSDB	10	Fixed	2500000	#	#	#	#	0	NULL	#	#	NULL	latin1_swedish_ci	NULL			0	N
+t3	ROCKSDB	10	Fixed	2500000	#	#	#	#	0	NULL	#	#	NULL	latin1_swedish_ci	NULL	partitioned		0	N
 select count(a),count(b) from t1;
 count(a)	count(b)
 2500000	2500000

storage/rocksdb/mysql-test/rocksdb/r/bulk_load_unsorted_rev.result

@@ -72,9 +72,9 @@ LOAD DATA INFILE <input_file> INTO TABLE t3;
 set rocksdb_bulk_load=0;
 SHOW TABLE STATUS WHERE name LIKE 't%';
 Name	Engine	Version	Row_format	Rows	Avg_row_length	Data_length	Max_data_length	Index_length	Data_free	Auto_increment	Create_time	Update_time	Check_time	Collation	Checksum	Create_options	Comment	Max_index_length	Temporary
-t1	ROCKSDB	10	Fixed	2500000	#	#	#	#	0	NULL	NULL	NULL	NULL	latin1_swedish_ci	NULL			0	N
-t2	ROCKSDB	10	Fixed	2500000	#	#	#	#	0	NULL	NULL	NULL	NULL	latin1_swedish_ci	NULL			0	N
-t3	ROCKSDB	10	Fixed	2500000	#	#	#	#	0	NULL	NULL	NULL	NULL	latin1_swedish_ci	NULL	partitioned		0	N
+t1	ROCKSDB	10	Fixed	2500000	#	#	#	#	0	NULL	#	#	NULL	latin1_swedish_ci	NULL			0	N
+t2	ROCKSDB	10	Fixed	2500000	#	#	#	#	0	NULL	#	#	NULL	latin1_swedish_ci	NULL			0	N
+t3	ROCKSDB	10	Fixed	2500000	#	#	#	#	0	NULL	#	#	NULL	latin1_swedish_ci	NULL	partitioned		0	N
 ANALYZE TABLE t1, t2, t3;
 Table	Op	Msg_type	Msg_text
 test.t1	analyze	status	Engine-independent statistics collected
@@ -85,9 +85,9 @@ test.t3	analyze	status	Engine-independent statistics collected
 test.t3	analyze	status	OK
 SHOW TABLE STATUS WHERE name LIKE 't%';
 Name	Engine	Version	Row_format	Rows	Avg_row_length	Data_length	Max_data_length	Index_length	Data_free	Auto_increment	Create_time	Update_time	Check_time	Collation	Checksum	Create_options	Comment	Max_index_length	Temporary
-t1	ROCKSDB	10	Fixed	2500000	#	#	#	#	0	NULL	NULL	NULL	NULL	latin1_swedish_ci	NULL			0	N
-t2	ROCKSDB	10	Fixed	2500000	#	#	#	#	0	NULL	NULL	NULL	NULL	latin1_swedish_ci	NULL			0	N
-t3	ROCKSDB	10	Fixed	2500000	#	#	#	#	0	NULL	NULL	NULL	NULL	latin1_swedish_ci	NULL	partitioned		0	N
+t1	ROCKSDB	10	Fixed	2500000	#	#	#	#	0	NULL	#	#	NULL	latin1_swedish_ci	NULL			0	N
+t2	ROCKSDB	10	Fixed	2500000	#	#	#	#	0	NULL	#	#	NULL	latin1_swedish_ci	NULL			0	N
+t3	ROCKSDB	10	Fixed	2500000	#	#	#	#	0	NULL	#	#	NULL	latin1_swedish_ci	NULL	partitioned		0	N
 select count(a),count(b) from t1;
 count(a)	count(b)
 2500000	2500000

storage/rocksdb/mysql-test/rocksdb/r/issue255.result

@@ -2,7 +2,7 @@ CREATE TABLE t1 (pk BIGINT NOT NULL PRIMARY KEY AUTO_INCREMENT);
 INSERT INTO t1 VALUES (5);
 SHOW TABLE STATUS LIKE 't1';
 Name	Engine	Version	Row_format	Rows	Avg_row_length	Data_length	Max_data_length	Index_length	Data_free	Auto_increment	Create_time	Update_time	Check_time	Collation	Checksum	Create_options	Comment	Max_index_length	Temporary
-t1	ROCKSDB	#	Fixed	#	#	#	#	#	#	6	NULL	NULL	NULL	latin1_swedish_ci	NULL			0	N
+t1	ROCKSDB	#	Fixed	#	#	#	#	#	#	6	#	#	NULL	latin1_swedish_ci	NULL			0	N
 INSERT INTO t1 VALUES ('538647864786478647864');
 Warnings:
 Warning	1264	Out of range value for column 'pk' at row 1
@@ -12,7 +12,7 @@ pk
 9223372036854775807
 SHOW TABLE STATUS LIKE 't1';
 Name	Engine	Version	Row_format	Rows	Avg_row_length	Data_length	Max_data_length	Index_length	Data_free	Auto_increment	Create_time	Update_time	Check_time	Collation	Checksum	Create_options	Comment	Max_index_length	Temporary
-t1	ROCKSDB	10	Fixed	2	22	44	0	0	0	9223372036854775807	NULL	NULL	NULL	latin1_swedish_ci	NULL			0	N
+t1	ROCKSDB	10	Fixed	2	22	44	0	0	0	9223372036854775807	#	#	NULL	latin1_swedish_ci	NULL			0	N
 INSERT INTO t1 VALUES ();
 ERROR 23000: Duplicate entry '9223372036854775807' for key 'PRIMARY'
 SELECT * FROM t1;
@@ -21,7 +21,7 @@ pk
 9223372036854775807
 SHOW TABLE STATUS LIKE 't1';
 Name	Engine	Version	Row_format	Rows	Avg_row_length	Data_length	Max_data_length	Index_length	Data_free	Auto_increment	Create_time	Update_time	Check_time	Collation	Checksum	Create_options	Comment	Max_index_length	Temporary
-t1	ROCKSDB	#	Fixed	#	#	#	#	#	#	9223372036854775807	NULL	NULL	NULL	latin1_swedish_ci	NULL			0	N
+t1	ROCKSDB	#	Fixed	#	#	#	#	#	#	9223372036854775807	#	#	NULL	latin1_swedish_ci	NULL			0	N
 INSERT INTO t1 VALUES ();
 ERROR 23000: Duplicate entry '9223372036854775807' for key 'PRIMARY'
 SELECT * FROM t1;
@@ -30,13 +30,13 @@ pk
 9223372036854775807
 SHOW TABLE STATUS LIKE 't1';
 Name	Engine	Version	Row_format	Rows	Avg_row_length	Data_length	Max_data_length	Index_length	Data_free	Auto_increment	Create_time	Update_time	Check_time	Collation	Checksum	Create_options	Comment	Max_index_length	Temporary
-t1	ROCKSDB	#	Fixed	#	#	#	#	#	#	9223372036854775807	NULL	NULL	NULL	latin1_swedish_ci	NULL			0	N
+t1	ROCKSDB	#	Fixed	#	#	#	#	#	#	9223372036854775807	#	#	NULL	latin1_swedish_ci	NULL			0	N
 DROP TABLE t1;
 CREATE TABLE t1 (pk TINYINT NOT NULL PRIMARY KEY AUTO_INCREMENT);
 INSERT INTO t1 VALUES (5);
 SHOW TABLE STATUS LIKE 't1';
 Name	Engine	Version	Row_format	Rows	Avg_row_length	Data_length	Max_data_length	Index_length	Data_free	Auto_increment	Create_time	Update_time	Check_time	Collation	Checksum	Create_options	Comment	Max_index_length	Temporary
-t1	ROCKSDB	#	Fixed	#	#	#	#	#	#	6	NULL	NULL	NULL	latin1_swedish_ci	NULL			0	N
+t1	ROCKSDB	#	Fixed	#	#	#	#	#	#	6	#	#	NULL	latin1_swedish_ci	NULL			0	N
 INSERT INTO t1 VALUES (1000);
 Warnings:
 Warning	1264	Out of range value for column 'pk' at row 1
@@ -46,7 +46,7 @@ pk
 127
 SHOW TABLE STATUS LIKE 't1';
 Name	Engine	Version	Row_format	Rows	Avg_row_length	Data_length	Max_data_length	Index_length	Data_free	Auto_increment	Create_time	Update_time	Check_time	Collation	Checksum	Create_options	Comment	Max_index_length	Temporary
-t1	ROCKSDB	#	Fixed	#	#	#	#	#	#	127	NULL	NULL	NULL	latin1_swedish_ci	NULL			0	N
+t1	ROCKSDB	#	Fixed	#	#	#	#	#	#	127	#	#	NULL	latin1_swedish_ci	NULL			0	N
 INSERT INTO t1 VALUES ();
 ERROR 23000: Duplicate entry '127' for key 'PRIMARY'
 SELECT * FROM t1;
@@ -55,7 +55,7 @@ pk
 127
 SHOW TABLE STATUS LIKE 't1';
 Name	Engine	Version	Row_format	Rows	Avg_row_length	Data_length	Max_data_length	Index_length	Data_free	Auto_increment	Create_time	Update_time	Check_time	Collation	Checksum	Create_options	Comment	Max_index_length	Temporary
-t1	ROCKSDB	#	Fixed	#	#	#	#	#	#	127	NULL	NULL	NULL	latin1_swedish_ci	NULL			0	N
+t1	ROCKSDB	#	Fixed	#	#	#	#	#	#	127	#	#	NULL	latin1_swedish_ci	NULL			0	N
 INSERT INTO t1 VALUES ();
 ERROR 23000: Duplicate entry '127' for key 'PRIMARY'
 SELECT * FROM t1;
@@ -64,5 +64,5 @@ pk
 127
 SHOW TABLE STATUS LIKE 't1';
 Name	Engine	Version	Row_format	Rows	Avg_row_length	Data_length	Max_data_length	Index_length	Data_free	Auto_increment	Create_time	Update_time	Check_time	Collation	Checksum	Create_options	Comment	Max_index_length	Temporary
-t1	ROCKSDB	#	Fixed	#	#	#	#	#	#	127	NULL	NULL	NULL	latin1_swedish_ci	NULL			0	N
+t1	ROCKSDB	#	Fixed	#	#	#	#	#	#	127	#	#	NULL	latin1_swedish_ci	NULL			0	N
 DROP TABLE t1;

storage/rocksdb/mysql-test/rocksdb/r/rocksdb.result

@@ -1422,7 +1422,7 @@ create table t1 (i int primary key auto_increment) engine=RocksDB;
 insert into t1 values (null),(null);
 show table status like 't1';
 Name	Engine	Version	Row_format	Rows	Avg_row_length	Data_length	Max_data_length	Index_length	Data_free	Auto_increment	Create_time	Update_time	Check_time	Collation	Checksum	Create_options	Comment	Max_index_length	Temporary
-t1	ROCKSDB	10	Fixed	1000	0	#	0	0	0	3	NULL	NULL	NULL	latin1_swedish_ci	NULL			0	N
+t1	ROCKSDB	10	Fixed	1000	0	#	0	0	0	3	#	#	NULL	latin1_swedish_ci	NULL			0	N
 drop table t1;
 #
 # Fix Issue #4: Crash when using pseudo-unique keys
@@ -2595,7 +2595,7 @@ CREATE TABLE t1(a INT AUTO_INCREMENT KEY);
 INSERT INTO t1 VALUES(0),(-1),(0);
 SHOW TABLE STATUS LIKE 't1';
 Name	Engine	Version	Row_format	Rows	Avg_row_length	Data_length	Max_data_length	Index_length	Data_free	Auto_increment	Create_time	Update_time	Check_time	Collation	Checksum	Create_options	Comment	Max_index_length	Temporary
-t1	ROCKSDB	10	Fixed	1000	0	0	0	0	0	3	NULL	NULL	NULL	latin1_swedish_ci	NULL			0	N
+t1	ROCKSDB	10	Fixed	1000	0	0	0	0	0	3	#	#	NULL	latin1_swedish_ci	NULL			0	N
 SELECT * FROM t1;
 a
 -1
@@ -2606,7 +2606,7 @@ CREATE TABLE t1(a INT AUTO_INCREMENT KEY);
 INSERT INTO t1 VALUES(0),(10),(0);
 SHOW TABLE STATUS LIKE 't1';
 Name	Engine	Version	Row_format	Rows	Avg_row_length	Data_length	Max_data_length	Index_length	Data_free	Auto_increment	Create_time	Update_time	Check_time	Collation	Checksum	Create_options	Comment	Max_index_length	Temporary
-t1	ROCKSDB	10	Fixed	1000	0	0	0	0	0	12	NULL	NULL	NULL	latin1_swedish_ci	NULL			0	N
+t1	ROCKSDB	10	Fixed	1000	0	0	0	0	0	12	#	#	NULL	latin1_swedish_ci	NULL			0	N
 SELECT * FROM t1;
 a
 1

storage/rocksdb/mysql-test/rocksdb/r/show_table_status.result

@@ -7,12 +7,12 @@ set global rocksdb_force_flush_memtable_now = true;
 CREATE TABLE t3 (a INT, b CHAR(8), pk INT PRIMARY KEY) ENGINE=rocksdb CHARACTER SET utf8;
 SHOW TABLE STATUS WHERE name IN ( 't1', 't2', 't3' );
 Name	Engine	Version	Row_format	Rows	Avg_row_length	Data_length	Max_data_length	Index_length	Data_free	Auto_increment	Create_time	Update_time	Check_time	Collation	Checksum	Create_options	Comment	Max_index_length	Temporary
-t1	ROCKSDB	10	Fixed	1000	#	#	0	0	0	NULL	NULL	NULL	NULL	latin1_swedish_ci	NULL			0	N
-t2	ROCKSDB	10	Fixed	1000	#	#	0	0	0	NULL	NULL	NULL	NULL	latin1_swedish_ci	NULL			0	N
-t3	ROCKSDB	10	Fixed	1000	#	#	0	0	0	NULL	NULL	NULL	NULL	utf8_general_ci	NULL			0	N
+t1	ROCKSDB	10	Fixed	1000	#	#	0	0	0	NULL	#	#	NULL	latin1_swedish_ci	NULL			0	N
+t2	ROCKSDB	10	Fixed	1000	#	#	0	0	0	NULL	#	#	NULL	latin1_swedish_ci	NULL			0	N
+t3	ROCKSDB	10	Fixed	1000	#	#	0	0	0	NULL	#	#	NULL	utf8_general_ci	NULL			0	N
 SHOW TABLE STATUS WHERE name LIKE 't2';
 Name	Engine	Version	Row_format	Rows	Avg_row_length	Data_length	Max_data_length	Index_length	Data_free	Auto_increment	Create_time	Update_time	Check_time	Collation	Checksum	Create_options	Comment	Max_index_length	Temporary
-t2	ROCKSDB	10	Fixed	1000	#	#	0	0	0	NULL	NULL	NULL	NULL	latin1_swedish_ci	NULL			0	N
+t2	ROCKSDB	10	Fixed	1000	#	#	0	0	0	NULL	#	#	NULL	latin1_swedish_ci	NULL			0	N
 DROP TABLE t1, t2, t3;
 CREATE DATABASE `db_new..............................................end`;
 USE `db_new..............................................end`;
@@ -22,3 +22,39 @@ SELECT TABLE_SCHEMA, TABLE_NAME FROM information_schema.table_statistics WHERE T
 TABLE_SCHEMA	db_new..............................................end
 TABLE_NAME	t1_new..............................................end
 DROP DATABASE `db_new..............................................end`;
+#
+# MDEV-17171: Bug: RocksDB Tables do not have "Creation Date"
+#
+use test;
+create table t1 (a int) engine=rocksdb;
+select create_time is not null, update_time, check_time 
+from information_schema.tables where table_schema=database() and table_name='t1';
+create_time is not null	update_time	check_time
+1	NULL	NULL
+insert into t1 values (1);
+select create_time is not null, update_time is not null, check_time 
+from information_schema.tables where table_schema=database() and table_name='t1';
+create_time is not null	update_time is not null	check_time
+1	1	NULL
+flush tables;
+select create_time is not null, update_time is not null, check_time 
+from information_schema.tables where table_schema=database() and table_name='t1';
+create_time is not null	update_time is not null	check_time
+1	1	NULL
+select create_time, update_time into @create_tm, @update_tm
+from information_schema.tables 
+where table_schema=database() and table_name='t1';
+select sleep(3);
+sleep(3)
+0
+insert into t1 values (2);
+select 
+create_time=@create_tm /* should not change */ , 
+timestampdiff(second, @update_tm, update_time) > 2,
+check_time
+from information_schema.tables 
+where table_schema=database() and table_name='t1';
+create_time=@create_tm	1
+timestampdiff(second, @update_tm, update_time) > 2	1
+check_time	NULL
+drop table t1;

storage/rocksdb/mysql-test/rocksdb/r/truncate_table.result

@@ -9,19 +9,19 @@ DROP TABLE t1;
 CREATE TABLE t1 (a INT KEY AUTO_INCREMENT, c CHAR(8)) ENGINE=rocksdb;
 SHOW TABLE STATUS LIKE 't1';
 Name	Engine	Version	Row_format	Rows	Avg_row_length	Data_length	Max_data_length	Index_length	Data_free	Auto_increment	Create_time	Update_time	Check_time	Collation	Checksum	Create_options	Comment	Max_index_length	Temporary
-t1	ROCKSDB	10	Fixed	#	#	#	0	0	0	1	NULL	NULL	NULL	latin1_swedish_ci	NULL			0	N
+t1	ROCKSDB	10	Fixed	#	#	#	0	0	0	1	#	#	NULL	latin1_swedish_ci	NULL			0	N
 INSERT INTO t1 (c) VALUES ('a'),('b'),('c');
 SHOW TABLE STATUS LIKE 't1';
 Name	Engine	Version	Row_format	Rows	Avg_row_length	Data_length	Max_data_length	Index_length	Data_free	Auto_increment	Create_time	Update_time	Check_time	Collation	Checksum	Create_options	Comment	Max_index_length	Temporary
-t1	ROCKSDB	10	Fixed	#	#	#	0	0	0	4	NULL	NULL	NULL	latin1_swedish_ci	NULL			0	N
+t1	ROCKSDB	10	Fixed	#	#	#	0	0	0	4	#	#	NULL	latin1_swedish_ci	NULL			0	N
 TRUNCATE TABLE t1;
 SHOW TABLE STATUS LIKE 't1';
 Name	Engine	Version	Row_format	Rows	Avg_row_length	Data_length	Max_data_length	Index_length	Data_free	Auto_increment	Create_time	Update_time	Check_time	Collation	Checksum	Create_options	Comment	Max_index_length	Temporary
-t1	ROCKSDB	10	Fixed	#	#	#	0	0	0	1	NULL	NULL	NULL	latin1_swedish_ci	NULL			0	N
+t1	ROCKSDB	10	Fixed	#	#	#	0	0	0	1	#	#	NULL	latin1_swedish_ci	NULL			0	N
 INSERT INTO t1 (c) VALUES ('d');
 SHOW TABLE STATUS LIKE 't1';
 Name	Engine	Version	Row_format	Rows	Avg_row_length	Data_length	Max_data_length	Index_length	Data_free	Auto_increment	Create_time	Update_time	Check_time	Collation	Checksum	Create_options	Comment	Max_index_length	Temporary
-t1	ROCKSDB	10	Fixed	#	#	#	0	0	0	2	NULL	NULL	NULL	latin1_swedish_ci	NULL			0	N
+t1	ROCKSDB	10	Fixed	#	#	#	0	0	0	2	#	#	NULL	latin1_swedish_ci	NULL			0	N
 SELECT a,c FROM t1;
 a	c
 1	d

storage/rocksdb/mysql-test/rocksdb/t/issue255.test

@@ -3,24 +3,25 @@
 CREATE TABLE t1 (pk BIGINT NOT NULL PRIMARY KEY AUTO_INCREMENT);
 
 INSERT INTO t1 VALUES (5);
---replace_column 3 # 5 # 6 # 7 # 8 # 9 # 10 #
+--replace_column 3 # 5 # 6 # 7 # 8 # 9 # 10 # 12 # 13 #
 SHOW TABLE STATUS LIKE 't1';
 
 INSERT INTO t1 VALUES ('538647864786478647864');
---replace_column 3 # 5 # 6 # 7 # 8 # 9 # 10 #
+--replace_column 3 # 5 # 6 # 7 # 8 # 9 # 10 # 12 # 13 #
 SELECT * FROM t1;
+--replace_column 12 # 13 #
 SHOW TABLE STATUS LIKE 't1';
 
 --error ER_DUP_ENTRY
 INSERT INTO t1 VALUES ();
 SELECT * FROM t1;
---replace_column 3 # 5 # 6 # 7 # 8 # 9 # 10 #
+--replace_column 3 # 5 # 6 # 7 # 8 # 9 # 10 # 12 # 13 #
 SHOW TABLE STATUS LIKE 't1';
 
 --error ER_DUP_ENTRY
 INSERT INTO t1 VALUES ();
 SELECT * FROM t1;
---replace_column 3 # 5 # 6 # 7 # 8 # 9 # 10 #
+--replace_column 3 # 5 # 6 # 7 # 8 # 9 # 10 # 12 # 13 #
 SHOW TABLE STATUS LIKE 't1';
 
 DROP TABLE t1;
@@ -28,24 +29,24 @@ DROP TABLE t1;
 CREATE TABLE t1 (pk TINYINT NOT NULL PRIMARY KEY AUTO_INCREMENT);
 
 INSERT INTO t1 VALUES (5);
---replace_column 3 # 5 # 6 # 7 # 8 # 9 # 10 #
+--replace_column 3 # 5 # 6 # 7 # 8 # 9 # 10 # 12 # 13 #
 SHOW TABLE STATUS LIKE 't1';
 
 INSERT INTO t1 VALUES (1000);
 SELECT * FROM t1;
---replace_column 3 # 5 # 6 # 7 # 8 # 9 # 10 #
+--replace_column 3 # 5 # 6 # 7 # 8 # 9 # 10 # 12 # 13 #
 SHOW TABLE STATUS LIKE 't1';
 
 --error ER_DUP_ENTRY
 INSERT INTO t1 VALUES ();
 SELECT * FROM t1;
---replace_column 3 # 5 # 6 # 7 # 8 # 9 # 10 #
+--replace_column 3 # 5 # 6 # 7 # 8 # 9 # 10 # 12 # 13 #
 SHOW TABLE STATUS LIKE 't1';
 
 --error ER_DUP_ENTRY
 INSERT INTO t1 VALUES ();
 SELECT * FROM t1;
---replace_column 3 # 5 # 6 # 7 # 8 # 9 # 10 #
+--replace_column 3 # 5 # 6 # 7 # 8 # 9 # 10 # 12 # 13 #
 SHOW TABLE STATUS LIKE 't1';
 
 DROP TABLE t1;

storage/rocksdb/mysql-test/rocksdb/t/rocksdb.test

@@ -1207,7 +1207,7 @@ drop table t1;
 create table t1 (i int primary key auto_increment) engine=RocksDB;
 
 insert into t1 values (null),(null);
---replace_column 7 #
+--replace_column 7 # 12 # 13 #
 show table status like 't1';
 drop table t1;
 
@@ -1914,11 +1914,13 @@ DROP TABLE t1;
 # value is 4 while MyRocks will show it as 3.
 CREATE TABLE t1(a INT AUTO_INCREMENT KEY);
 INSERT INTO t1 VALUES(0),(-1),(0);
+--replace_column 12 # 13 #
 SHOW TABLE STATUS LIKE 't1';
 SELECT * FROM t1;
 DROP TABLE t1;
 CREATE TABLE t1(a INT AUTO_INCREMENT KEY);
 INSERT INTO t1 VALUES(0),(10),(0);
+--replace_column 12 # 13 #
 SHOW TABLE STATUS LIKE 't1';
 SELECT * FROM t1;
 DROP TABLE t1;

storage/rocksdb/mysql-test/rocksdb/t/show_table_status.test

@@ -25,7 +25,7 @@ set global rocksdb_force_flush_memtable_now = true;
 
 CREATE TABLE t3 (a INT, b CHAR(8), pk INT PRIMARY KEY) ENGINE=rocksdb CHARACTER SET utf8;
 
---replace_column 6 # 7 #
+--replace_column 6 # 7 # 12 # 13 #
 SHOW TABLE STATUS WHERE name IN ( 't1', 't2', 't3' );
 
 # Some statistics don't get updated as quickly.  The Data_length and
@@ -49,7 +49,7 @@ set global rocksdb_force_flush_memtable_now = true;
 
 # We expect the number of rows to be 10000. Data_len and Avg_row_len
 # may vary, depending on built-in compression library.
---replace_column 6 # 7 #
+--replace_column 6 # 7 # 12 # 13 #
 SHOW TABLE STATUS WHERE name LIKE 't2';
 DROP TABLE t1, t2, t3;
 
@@ -63,3 +63,36 @@ CREATE TABLE `t1_new..............................................end`(a int) en
 INSERT INTO `t1_new..............................................end` VALUES (1);
 --query_vertical SELECT TABLE_SCHEMA, TABLE_NAME FROM information_schema.table_statistics WHERE TABLE_NAME = 't1_new..............................................end'
 DROP DATABASE `db_new..............................................end`;
+--echo #
+--echo # MDEV-17171: Bug: RocksDB Tables do not have "Creation Date"
+--echo #
+use test;
+create table t1 (a int) engine=rocksdb;
+
+select create_time is not null, update_time, check_time 
+from information_schema.tables where table_schema=database() and table_name='t1';
+
+insert into t1 values (1);
+select create_time is not null, update_time is not null, check_time 
+from information_schema.tables where table_schema=database() and table_name='t1';
+
+flush tables;
+select create_time is not null, update_time is not null, check_time 
+from information_schema.tables where table_schema=database() and table_name='t1';
+
+select create_time, update_time into @create_tm, @update_tm
+from information_schema.tables 
+where table_schema=database() and table_name='t1';
+
+select sleep(3);
+insert into t1 values (2);
+
+--vertical_results
+select 
+  create_time=@create_tm /* should not change */ , 
+  timestampdiff(second, @update_tm, update_time) > 2,
+  check_time
+from information_schema.tables 
+where table_schema=database() and table_name='t1';
+
+drop table t1;

storage/rocksdb/mysql-test/rocksdb/t/truncate_table.test

@@ -29,22 +29,22 @@ DROP TABLE t1;
 CREATE TABLE t1 (a INT KEY AUTO_INCREMENT, c CHAR(8)) ENGINE=rocksdb;
 
 #--replace_column 2 # 3 # 4 # 5 # 6 # 7 # 8 # 9 # 10 # 12 # 13 # 14 # 15 # 16 # 17 # 18 #
---replace_column 5 # 6 # 7 #
+--replace_column 5 # 6 # 7 # 12 # 13 #
 SHOW TABLE STATUS LIKE 't1';
 
 INSERT INTO t1 (c) VALUES ('a'),('b'),('c');
 #--replace_column 2 # 3 # 4 # 5 # 6 # 7 # 8 # 9 # 10 # 12 # 13 # 14 # 15 # 16 # 17 # 18 #
---replace_column 5 # 6 # 7 #
+--replace_column 5 # 6 # 7 # 12 # 13 #
 SHOW TABLE STATUS LIKE 't1';
 
 TRUNCATE TABLE t1;
 #--replace_column 2 # 3 # 4 # 5 # 6 # 7 # 8 # 9 # 10 # 12 # 13 # 14 # 15 # 16 # 17 # 18 #
---replace_column 5 # 6 # 7 #
+--replace_column 5 # 6 # 7 # 12 # 13 #
 SHOW TABLE STATUS LIKE 't1';
 
 INSERT INTO t1 (c) VALUES ('d');
 #--replace_column 2 # 3 # 4 # 5 # 6 # 7 # 8 # 9 # 10 # 12 # 13 # 14 # 15 # 16 # 17 # 18 #
---replace_column 5 # 6 # 7 #
+--replace_column 5 # 6 # 7 # 12 # 13 #
 SHOW TABLE STATUS LIKE 't1';
 
 --sorted_result

storage/rocksdb/rdb_datadic.cc

@@ -3517,6 +3517,27 @@ Rdb_tbl_def::~Rdb_tbl_def() {
   }
 }
 
+void Rdb_tbl_def::put_creation_time(Rdb_dict_manager *dict_manager,
+                                    rocksdb::WriteBatchBase *batch,
+                                    time_t timeval) {
+  dict_manager->put_creation_time(batch,
+                                  m_key_descr_arr[0]->get_gl_index_id(),
+                                  timeval);
+  create_time = timeval;
+}
+
+time_t Rdb_tbl_def::get_creation_time(Rdb_dict_manager *dict_manager) {
+  time_t tm;
+  if (create_time == CREATE_TIME_UNKNOWN) {
+    if (dict_manager->get_creation_time(m_key_descr_arr[0]->get_gl_index_id(),
+                                        &tm))
+      create_time = tm;
+    else
+      create_time = 0; // Not available
+  }
+  return create_time;
+}
+
 /*
   Put table definition DDL entry. Actual write is done at
   Rdb_dict_manager::commit.
@@ -5343,6 +5364,7 @@ rocksdb::Status Rdb_dict_manager::put_auto_incr_val(
                       value_writer.to_slice());
 }
 
+
 bool Rdb_dict_manager::get_auto_incr_val(const GL_INDEX_ID &gl_index_id,
                                          ulonglong *new_val) const {
   Rdb_buf_writer<Rdb_key_def::INDEX_NUMBER_SIZE * 3> key_writer;
@@ -5362,6 +5384,51 @@ bool Rdb_dict_manager::get_auto_incr_val(const GL_INDEX_ID &gl_index_id,
   return false;
 }
 
+
+rocksdb::Status
+Rdb_dict_manager::put_creation_time(rocksdb::WriteBatchBase *batch,
+                                    const GL_INDEX_ID &gl_index_id,
+                                    time_t timeval) const {
+  uchar key_buf[Rdb_key_def::INDEX_NUMBER_SIZE * 3] = {0};
+  dump_index_id(key_buf, Rdb_key_def::TABLE_CREATION_TS, gl_index_id);
+  const rocksdb::Slice key =
+      rocksdb::Slice(reinterpret_cast<char *>(key_buf), sizeof(key_buf));
+
+  // Value is constructed by storing the version and the value.
+  uchar value_buf[RDB_SIZEOF_TABLE_CREATION_TS_VERSION +
+                  ROCKSDB_SIZEOF_TABLE_CREATION_TS] = {0};
+  uchar *ptr = value_buf;
+  rdb_netbuf_store_uint16(ptr, Rdb_key_def::TABLE_CREATION_TS_VERSION);
+  ptr += RDB_SIZEOF_TABLE_CREATION_TS_VERSION;
+  rdb_netbuf_store_uint64(ptr, timeval);
+  ptr += ROCKSDB_SIZEOF_TABLE_CREATION_TS;
+  const rocksdb::Slice value =
+      rocksdb::Slice(reinterpret_cast<char *>(value_buf), ptr - value_buf);
+
+  return batch->Put(m_system_cfh, key, value);
+}
+
+bool Rdb_dict_manager::get_creation_time(const GL_INDEX_ID &gl_index_id,
+                                         time_t *new_val) const {
+  uchar key_buf[Rdb_key_def::INDEX_NUMBER_SIZE * 3] = {0};
+  dump_index_id(key_buf, Rdb_key_def::TABLE_CREATION_TS, gl_index_id);
+
+  std::string value;
+  const rocksdb::Status status = get_value(
+      rocksdb::Slice(reinterpret_cast<char *>(key_buf), sizeof(key_buf)),
+      &value);
+
+  if (status.ok() && value.size() >= RDB_SIZEOF_TABLE_CREATION_TS_VERSION) {
+    const uchar *const val = reinterpret_cast<const uchar *>(value.data());
+
+    if (rdb_netbuf_to_uint16(val) <= Rdb_key_def::TABLE_CREATION_TS_VERSION) {
+      *new_val = rdb_netbuf_to_uint64(val + RDB_SIZEOF_TABLE_CREATION_TS_VERSION);
+      return true;
+    }
+  }
+  return false;
+}
+
 uint Rdb_seq_generator::get_and_update_next_number(
     Rdb_dict_manager *const dict) {
   DBUG_ASSERT(dict != nullptr);

storage/rocksdb/rdb_datadic.h

@@ -201,6 +201,7 @@ const size_t RDB_SIZEOF_INDEX_TYPE = sizeof(uchar);
 const size_t RDB_SIZEOF_KV_VERSION = sizeof(uint16);
 const size_t RDB_SIZEOF_INDEX_FLAGS = sizeof(uint32);
 const size_t RDB_SIZEOF_AUTO_INCREMENT_VERSION = sizeof(uint16);
+const size_t RDB_SIZEOF_TABLE_CREATION_TS_VERSION = sizeof(uint16);
 
 // Possible return values for rdb_index_field_unpack_t functions.
 enum {
@@ -504,6 +505,7 @@ class Rdb_key_def {
     MAX_INDEX_ID = 7,
     DDL_CREATE_INDEX_ONGOING = 8,
     AUTO_INC = 9,
+    TABLE_CREATION_TS = 10,
     END_DICT_INDEX_ID = 255
   };
 
@@ -517,6 +519,7 @@ class Rdb_key_def {
     MAX_INDEX_ID_VERSION = 1,
     DDL_CREATE_INDEX_ONGOING_VERSION = 1,
     AUTO_INCREMENT_VERSION = 1,
+    TABLE_CREATION_TS_VERSION = 1
     // Version for index stats is stored in IndexStats struct
   };
 
@@ -1108,6 +1111,13 @@ class Rdb_tbl_def {
 
   ~Rdb_tbl_def();
 
+  // time values are shown in SHOW TABLE STATUS
+  void put_creation_time(Rdb_dict_manager *dict_manager,
+                         rocksdb::WriteBatchBase *batch, time_t timeval);
+  time_t get_creation_time(Rdb_dict_manager *dict_manager);
+
+  time_t update_time = 0; // in-memory only value, maintained right here
+
   void check_and_set_read_free_rpl_table();
 
   /* Number of indexes */
@@ -1133,6 +1143,12 @@ class Rdb_tbl_def {
   const std::string &base_tablename() const { return m_tablename; }
   const std::string &base_partition() const { return m_partition; }
   GL_INDEX_ID get_autoincr_gl_index_id();
+
+ private:
+  const time_t CREATE_TIME_UNKNOWN= 1;
+  // CREATE_TIME_UNKNOWN means "didn't try to read, yet"
+  // 0 means "no data available" (and SQL layer shares this)
+  time_t create_time = CREATE_TIME_UNKNOWN;
 };
 
 /*
@@ -1347,6 +1363,10 @@ class Rdb_binlog_manager {
   value: version, {max auto_increment so far}
   max auto_increment is 8 bytes
 
+  10. Table creation timestamp
+  key: Rdb_key_def::TABLE_CREATION_TIMESTAMP + cf_id + index_id
+  value: timestamp
+
   Data dictionary operations are atomic inside RocksDB. For example,
   when creating a table with two indexes, it is necessary to call Put
   three times. They have to be atomic. Rdb_dict_manager has a wrapper function
@@ -1505,6 +1525,11 @@ class Rdb_dict_manager {
                                     bool overwrite = false) const;
   bool get_auto_incr_val(const GL_INDEX_ID &gl_index_id,
                          ulonglong *new_val) const;
+  rocksdb::Status put_creation_time(rocksdb::WriteBatchBase *batch,
+                                    const GL_INDEX_ID &gl_index_id,
+                                    time_t timeval_arg) const;
+  bool get_creation_time(const GL_INDEX_ID &gl_index_id,
+                         time_t *new_val) const;
 };
 
 struct Rdb_index_info {

storage/rocksdb/rdb_global.h

@@ -228,6 +228,8 @@ const char *const RDB_TTL_COL_QUALIFIER = "ttl_col";
 
 #define ROCKSDB_SIZEOF_AUTOINC_VALUE sizeof(longlong)
 
+#define ROCKSDB_SIZEOF_TABLE_CREATION_TS sizeof(uint64_t)
+
 /*
   Maximum index prefix length in bytes.
 */