Do not load table stats when booting vttablet. (#15715)

Signed-off-by: Arthur Schreiber <[email protected]>

go/mysql/flavor_mysql.go

@@ -259,9 +259,18 @@ func (mysqlFlavor) readBinlogEvent(c *Conn) (BinlogEvent, error) {
 
 // baseShowTables is part of the Flavor interface.
 func (mysqlFlavor) baseShowTables() string {
-	return "SELECT table_name, table_type, unix_timestamp(create_time), table_comment FROM information_schema.tables WHERE table_schema = database()"
+	return BaseShowTables
 }
 
+const BaseShowTables = `SELECT t.table_name,
+		t.table_type,
+		UNIX_TIMESTAMP(t.create_time),
+		t.table_comment
+	FROM information_schema.tables t
+	WHERE
+		t.table_schema = database()
+`
+
 // TablesWithSize56 is a query to select table along with size for mysql 5.6
 const TablesWithSize56 = `SELECT table_name,
 	table_type,

go/mysql/schema.go

@@ -105,19 +105,21 @@ var BaseShowTablesFields = []*querypb.Field{{
 	ColumnLength: 6144,
 	Charset:      uint32(collations.SystemCollation.Collation),
 	Flags:        uint32(querypb.MySqlFlag_NOT_NULL_FLAG),
-}, {
+}}
+
+var BaseShowTablesWithSizesFields = append(BaseShowTablesFields, &querypb.Field{
 	Name:         "i.file_size",
 	Type:         querypb.Type_INT64,
 	ColumnLength: 11,
 	Charset:      collations.CollationBinaryID,
 	Flags:        uint32(querypb.MySqlFlag_BINARY_FLAG | querypb.MySqlFlag_NUM_FLAG),
-}, {
+}, &querypb.Field{
 	Name:         "i.allocated_size",
 	Type:         querypb.Type_INT64,
 	ColumnLength: 11,
 	Charset:      collations.CollationBinaryID,
 	Flags:        uint32(querypb.MySqlFlag_BINARY_FLAG | querypb.MySqlFlag_NUM_FLAG),
-}}
+})
 
 // BaseShowTablesRow returns the fields from a BaseShowTables or
 // BaseShowTablesForTable command.
@@ -131,9 +133,14 @@ func BaseShowTablesRow(tableName string, isView bool, comment string) []sqltypes
 		sqltypes.MakeTrusted(sqltypes.VarChar, []byte(tableType)),
 		sqltypes.MakeTrusted(sqltypes.Int64, []byte("1427325875")), // unix_timestamp(create_time)
 		sqltypes.MakeTrusted(sqltypes.VarChar, []byte(comment)),
+	}
+}
+
+func BaseShowTablesWithSizesRow(tableName string, isView bool, comment string) []sqltypes.Value {
+	return append(BaseShowTablesRow(tableName, isView, comment),
 		sqltypes.MakeTrusted(sqltypes.Int64, []byte("100")), // file_size
 		sqltypes.MakeTrusted(sqltypes.Int64, []byte("150")), // allocated_size
-	}
+	)
 }
 
 // ShowPrimaryFields contains the fields for a BaseShowPrimary.

go/vt/vtexplain/vtexplain_vttablet.go

@@ -416,7 +416,9 @@ func newTabletEnvironment(ddls []sqlparser.DDLStatement, opts *Options) (*tablet
 		tEnv.addResult(query, result)
 	}
 
-	showTableRows := make([][]sqltypes.Value, 0, 4)
+	showTableRows := make([][]sqltypes.Value, 0, len(ddls))
+	showTableWithSizesRows := make([][]sqltypes.Value, 0, len(ddls))
+
 	for _, ddl := range ddls {
 		table := ddl.GetTable().Name.String()
 		options := ""
@@ -429,14 +431,21 @@ func newTabletEnvironment(ddls []sqlparser.DDLStatement, opts *Options) (*tablet
 			}
 		}
 		showTableRows = append(showTableRows, mysql.BaseShowTablesRow(table, false, options))
+		showTableWithSizesRows = append(showTableWithSizesRows, mysql.BaseShowTablesWithSizesRow(table, true, options))
 	}
-	tEnv.addResult(mysql.TablesWithSize57, &sqltypes.Result{
+
+	tEnv.addResult(mysql.BaseShowTables, &sqltypes.Result{
 		Fields: mysql.BaseShowTablesFields,
 		Rows:   showTableRows,
 	})
+
+	tEnv.addResult(mysql.TablesWithSize57, &sqltypes.Result{
+		Fields: mysql.BaseShowTablesWithSizesFields,
+		Rows:   showTableWithSizesRows,
+	})
 	tEnv.addResult(mysql.TablesWithSize80, &sqltypes.Result{
-		Fields: mysql.BaseShowTablesFields,
-		Rows:   showTableRows,
+		Fields: mysql.BaseShowTablesWithSizesFields,
+		Rows:   showTableWithSizesRows,
 	})
 
 	indexRows := make([][]sqltypes.Value, 0, 4)

go/vt/vttablet/tabletserver/health_streamer_test.go

@@ -252,6 +252,17 @@ func TestReloadSchema(t *testing.T) {
 					"product|BASE TABLE|1684735966||114688|114688",
 					"users|BASE TABLE|1684735966||114688|114688",
 				))
+
+			db.AddQuery(mysql.BaseShowTables,
+				sqltypes.MakeTestResult(
+					sqltypes.MakeTestFields(
+						"TABLE_NAME | TABLE_TYPE | UNIX_TIMESTAMP(t.create_time) | TABLE_COMMENT",
+						"varchar|varchar|int64|varchar",
+					),
+					"product|BASE TABLE|1684735966|",
+					"users|BASE TABLE|1684735966|",
+				))
+
 			db.AddQueryPattern("SELECT COLUMN_NAME as column_name.*", sqltypes.MakeTestResult(
 				sqltypes.MakeTestFields(
 					"column_name",
@@ -296,6 +307,16 @@ func TestReloadSchema(t *testing.T) {
 					"users|BASE TABLE|1684735967||114688|114688",
 				))
 
+			db.AddQuery(mysql.BaseShowTables,
+				sqltypes.MakeTestResult(
+					sqltypes.MakeTestFields(
+						"TABLE_NAME | TABLE_TYPE | UNIX_TIMESTAMP(t.create_time) | TABLE_COMMENT",
+						"varchar|varchar|int64|varchar",
+					),
+					"product|BASE TABLE|1684735967|",
+					"users|BASE TABLE|1684735967|",
+				))
+
 			var wg sync.WaitGroup
 			wg.Add(1)
 			go func() {
@@ -364,6 +385,13 @@ func TestReloadView(t *testing.T) {
 				"varchar|varchar|int64|varchar|int64|int64",
 			),
 		))
+	db.AddQuery(mysql.BaseShowTables,
+		sqltypes.MakeTestResult(
+			sqltypes.MakeTestFields(
+				"TABLE_NAME | TABLE_TYPE | UNIX_TIMESTAMP(t.create_time) | TABLE_COMMENT",
+				"varchar|varchar|int64|varchar",
+			),
+		))
 	db.AddQueryPattern("SELECT COLUMN_NAME as column_name.*", sqltypes.MakeTestResult(
 		sqltypes.MakeTestFields(
 			"column_name",

go/vt/vttablet/tabletserver/query_engine_test.go

@@ -113,15 +113,26 @@ func TestGetPlanPanicDuetoEmptyQuery(t *testing.T) {
 }
 
 func addSchemaEngineQueries(db *fakesqldb.DB) {
-	db.AddQueryPattern(baseShowTablesPattern, &sqltypes.Result{
-		Fields: mysql.BaseShowTablesFields,
+	db.AddQueryPattern(baseShowTablesWithSizesPattern, &sqltypes.Result{
+		Fields: mysql.BaseShowTablesWithSizesFields,
 		Rows: [][]sqltypes.Value{
-			mysql.BaseShowTablesRow("test_table_01", false, ""),
-			mysql.BaseShowTablesRow("test_table_02", false, ""),
-			mysql.BaseShowTablesRow("test_table_03", false, ""),
-			mysql.BaseShowTablesRow("seq", false, "vitess_sequence"),
-			mysql.BaseShowTablesRow("msg", false, "vitess_message,vt_ack_wait=30,vt_purge_after=120,vt_batch_size=1,vt_cache_size=10,vt_poller_interval=30"),
+			mysql.BaseShowTablesWithSizesRow("test_table_01", false, ""),
+			mysql.BaseShowTablesWithSizesRow("test_table_02", false, ""),
+			mysql.BaseShowTablesWithSizesRow("test_table_03", false, ""),
+			mysql.BaseShowTablesWithSizesRow("seq", false, "vitess_sequence"),
+			mysql.BaseShowTablesWithSizesRow("msg", false, "vitess_message,vt_ack_wait=30,vt_purge_after=120,vt_batch_size=1,vt_cache_size=10,vt_poller_interval=30"),
 		}})
+	db.AddQuery(mysql.BaseShowTables,
+		&sqltypes.Result{
+			Fields: mysql.BaseShowTablesFields,
+			Rows: [][]sqltypes.Value{
+				mysql.BaseShowTablesRow("test_table_01", false, ""),
+				mysql.BaseShowTablesRow("test_table_02", false, ""),
+				mysql.BaseShowTablesRow("test_table_03", false, ""),
+				mysql.BaseShowTablesRow("seq", false, "vitess_sequence"),
+				mysql.BaseShowTablesRow("msg", false, "vitess_message,vt_ack_wait=30,vt_purge_after=120,vt_batch_size=1,vt_cache_size=10,vt_poller_interval=30"),
+			},
+		})
 	db.AddQuery("show status like 'Innodb_rows_read'", sqltypes.MakeTestResult(sqltypes.MakeTestFields(
 		"Variable_name|Value",
 		"varchar|int64"),

go/vt/vttablet/tabletserver/query_executor_test.go

@@ -1548,18 +1548,27 @@ func setUpQueryExecutorTest(t *testing.T) *fakesqldb.DB {
 	return db
 }
 
-const baseShowTablesPattern = `SELECT t\.table_name.*`
+const baseShowTablesWithSizesPattern = `SELECT t\.table_name.*SUM\(i\.file_size\).*`
 
 func initQueryExecutorTestDB(db *fakesqldb.DB) {
 	addQueryExecutorSupportedQueries(db)
-	db.AddQueryPattern(baseShowTablesPattern, &sqltypes.Result{
-		Fields: mysql.BaseShowTablesFields,
+	db.AddQueryPattern(baseShowTablesWithSizesPattern, &sqltypes.Result{
+		Fields: mysql.BaseShowTablesWithSizesFields,
 		Rows: [][]sqltypes.Value{
-			mysql.BaseShowTablesRow("test_table", false, ""),
-			mysql.BaseShowTablesRow("seq", false, "vitess_sequence"),
-			mysql.BaseShowTablesRow("msg", false, "vitess_message,vt_ack_wait=30,vt_purge_after=120,vt_batch_size=1,vt_cache_size=10,vt_poller_interval=30"),
+			mysql.BaseShowTablesWithSizesRow("test_table", false, ""),
+			mysql.BaseShowTablesWithSizesRow("seq", false, "vitess_sequence"),
+			mysql.BaseShowTablesWithSizesRow("msg", false, "vitess_message,vt_ack_wait=30,vt_purge_after=120,vt_batch_size=1,vt_cache_size=10,vt_poller_interval=30"),
 		},
 	})
+	db.AddQuery(mysql.BaseShowTables,
+		&sqltypes.Result{
+			Fields: mysql.BaseShowTablesFields,
+			Rows: [][]sqltypes.Value{
+				mysql.BaseShowTablesRow("test_table", false, ""),
+				mysql.BaseShowTablesRow("seq", false, "vitess_sequence"),
+				mysql.BaseShowTablesRow("msg", false, "vitess_message,vt_ack_wait=30,vt_purge_after=120,vt_batch_size=1,vt_cache_size=10,vt_poller_interval=30"),
+			},
+		})
 	db.AddQuery("show status like 'Innodb_rows_read'", sqltypes.MakeTestResult(sqltypes.MakeTestFields(
 		"Variable_name|Value",
 		"varchar|int64"),

go/vt/vttablet/tabletserver/schema/engine.go

@@ -255,7 +255,7 @@ func (se *Engine) Open() error {
 	}
 	se.notifiers = make(map[string]notifier)
 
-	if err := se.reload(ctx, true); err != nil {
+	if err := se.reload(ctx, false); err != nil {
 		return err
 	}
 	if !se.SkipMetaCheck {