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fix consistency bug #128
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,60 @@ | ||
| #!/bin/sh | ||
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| set -eu | ||
| cur=$(cd `dirname $0`; pwd) | ||
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| DB_NAME="mysql_consistency" | ||
| TABLE_NAME="t" | ||
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| # drop database on mysql | ||
| run_sql "drop database if exists \`$DB_NAME\`;" | ||
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| # build data on mysql | ||
| run_sql "create database $DB_NAME;" | ||
| run_sql "create table $DB_NAME.$TABLE_NAME (a int(255));" | ||
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| # insert 100 records | ||
| run_sql "insert into $DB_NAME.$TABLE_NAME values $(seq -s, 100 | sed 's/,*$//g' | sed "s/[0-9]*/('1')/g");" | ||
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| # dumping with consistency flush | ||
| export DUMPLING_TEST_DATABASE=$DB_NAME | ||
| export GO_FAILPOINTS="github.com/pingcap/dumpling/v4/export/ConsistencyCheck=return(\"5s\")" | ||
| run_dumpling & | ||
| # wait dumpling process to start to sleep | ||
| sleep 2 | ||
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| # record metadata info | ||
| metadata=`run_sql "show master status;"` | ||
| metaLog=`echo $metadata | awk -F 'File:' '{print $2}' | awk '{print $1}'` | ||
| metaPos=`echo $metadata | awk -F 'Position:' '{print $2}' | awk '{print $1}'` | ||
| metaGTID=`echo $metadata | awk -F 'Executed_Gtid_Set:' '{print $2}' | awk '{print $1}'` | ||
| # insert 100 more records, test whether dumpling will dump these data out | ||
| run_sql "insert into $DB_NAME.$TABLE_NAME values $(seq -s, 100 | sed 's/,*$//g' | sed "s/[0-9]*/('1')/g");" | ||
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| wait | ||
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| # check data record count | ||
| cnt=`grep -o "(1)" ${DUMPLING_OUTPUT_DIR}/${DB_NAME}.${TABLE_NAME}.0.sql|wc -l` | ||
| echo "1st records count is ${cnt}" | ||
| [ $cnt = 100 ] | ||
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| # check metadata | ||
| echo "metaLog: $metaLog" | ||
| echo "metaPos: $metaPos" | ||
| echo "metaGTID: $metaGTID" | ||
| if [ $metaLog != "" ]; then | ||
| [ `grep -o "Log: $metaLog" ${DUMPLING_OUTPUT_DIR}/metadata|wc -l` ] | ||
| fi | ||
| if [ $metaPos != "" ]; then | ||
| [ `grep -o "Pos: $metaPos" ${DUMPLING_OUTPUT_DIR}/metadata|wc -l` ] | ||
| fi | ||
| if [ $metaGTID != "" ]; then | ||
| [ `grep -o "GTID: $metaGTID" ${DUMPLING_OUTPUT_DIR}/metadata|wc -l` ] | ||
| fi | ||
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| # test dumpling normally | ||
| export GO_FAILPOINTS="" | ||
| run_dumpling | ||
| cnt=`grep -o "(1)" ${DUMPLING_OUTPUT_DIR}/${DB_NAME}.${TABLE_NAME}.0.sql|wc -l` | ||
| echo "2nd records count is ${cnt}" | ||
| [ $cnt = 200 ] | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,6 +1,7 @@ | ||
| package export | ||
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| import ( | ||
| "context" | ||
| "errors" | ||
| "strings" | ||
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@@ -27,19 +28,21 @@ func (s *testConsistencySuite) TestConsistencyController(c *C) { | |
| db, mock, err := sqlmock.New() | ||
| c.Assert(err, IsNil) | ||
| defer db.Close() | ||
| ctx, cancel := context.WithCancel(context.Background()) | ||
| defer cancel() | ||
| conf := DefaultConfig() | ||
| resultOk := sqlmock.NewResult(0, 1) | ||
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| conf.Consistency = "none" | ||
| ctrl, _ := NewConsistencyController(ctx, conf, db) | ||
| _, ok := ctrl.(*ConsistencyNone) | ||
| c.Assert(ok, IsTrue) | ||
| s.assertLifetimeErrNil(ctrl, c) | ||
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| conf.Consistency = "flush" | ||
| mock.ExpectExec("FLUSH TABLES WITH READ LOCK").WillReturnResult(resultOk) | ||
| mock.ExpectExec("UNLOCK TABLES").WillReturnResult(resultOk) | ||
| ctrl, _ = NewConsistencyController(ctx, conf, db) | ||
| _, ok = ctrl.(*ConsistencyFlushTableWithReadLock) | ||
| c.Assert(ok, IsTrue) | ||
| s.assertLifetimeErrNil(ctrl, c) | ||
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@@ -49,7 +52,7 @@ func (s *testConsistencySuite) TestConsistencyController(c *C) { | |
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| conf.Consistency = "snapshot" | ||
| conf.ServerInfo.ServerType = ServerTypeTiDB | ||
| ctrl, _ = NewConsistencyController(ctx, conf, db) | ||
| _, ok = ctrl.(*ConsistencyNone) | ||
| c.Assert(ok, IsTrue) | ||
| s.assertLifetimeErrNil(ctrl, c) | ||
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@@ -62,7 +65,7 @@ func (s *testConsistencySuite) TestConsistencyController(c *C) { | |
| mock.ExpectExec("LOCK TABLES").WillReturnResult(resultOk) | ||
| } | ||
| mock.ExpectExec("UNLOCK TABLES").WillReturnResult(resultOk) | ||
| ctrl, _ = NewConsistencyController(ctx, conf, db) | ||
| _, ok = ctrl.(*ConsistencyLockDumpingTables) | ||
| c.Assert(ok, IsTrue) | ||
| s.assertLifetimeErrNil(ctrl, c) | ||
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@@ -96,31 +99,33 @@ func (s *testConsistencySuite) TestConsistencyControllerError(c *C) { | |
| db, mock, err := sqlmock.New() | ||
| c.Assert(err, IsNil) | ||
| defer db.Close() | ||
| ctx, cancel := context.WithCancel(context.Background()) | ||
| defer cancel() | ||
| conf := DefaultConfig() | ||
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| conf.Consistency = "invalid_str" | ||
| _, err = NewConsistencyController(ctx, conf, db) | ||
| c.Assert(err, NotNil) | ||
| c.Assert(strings.Contains(err.Error(), "invalid consistency option"), IsTrue) | ||
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| // snapshot consistency is only available in TiDB | ||
| conf.Consistency = "snapshot" | ||
| conf.ServerInfo.ServerType = ServerTypeUnknown | ||
| _, err = NewConsistencyController(ctx, conf, db) | ||
| c.Assert(err, NotNil) | ||
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| // flush consistency is unavailable in TiDB | ||
| conf.Consistency = "flush" | ||
| conf.ServerInfo.ServerType = ServerTypeTiDB | ||
| ctrl, _ := NewConsistencyController(ctx, conf, db) | ||
| err = ctrl.Setup() | ||
| c.Assert(err, NotNil) | ||
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| // lock table fail | ||
| conf.Consistency = "lock" | ||
| conf.Tables = NewDatabaseTables().AppendTables("db", "t") | ||
| mock.ExpectExec("LOCK TABLE").WillReturnError(errors.New("")) | ||
| ctrl, _ = NewConsistencyController(ctx, conf, db) | ||
| err = ctrl.Setup() | ||
| c.Assert(err, NotNil) | ||
| } | ||
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| Original file line number | Diff line number | Diff line change | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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@@ -10,6 +10,7 @@ import ( | |||||||||||||||||||||
| "github.com/pingcap/dumpling/v4/log" | ||||||||||||||||||||||
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| _ "github.com/go-sql-driver/mysql" | ||||||||||||||||||||||
| "github.com/pingcap/failpoint" | ||||||||||||||||||||||
| pd "github.com/pingcap/pd/v4/client" | ||||||||||||||||||||||
| "go.uber.org/zap" | ||||||||||||||||||||||
| "golang.org/x/sync/errgroup" | ||||||||||||||||||||||
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@@ -133,7 +134,7 @@ func Dump(pCtx context.Context, conf *Config) (err error) { | |||||||||||||||||||||
| conn.Close() | ||||||||||||||||||||||
| } | ||||||||||||||||||||||
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| conCtrl, err := NewConsistencyController(ctx, conf, pool) | ||||||||||||||||||||||
| if err != nil { | ||||||||||||||||||||||
| return err | ||||||||||||||||||||||
| } | ||||||||||||||||||||||
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@@ -146,10 +147,6 @@ func Dump(pCtx context.Context, conf *Config) (err error) { | |||||||||||||||||||||
| return err | ||||||||||||||||||||||
| } | ||||||||||||||||||||||
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| // for other consistencies, we should get table list after consistency is set up and GlobalMetaData is cached | ||||||||||||||||||||||
| // for other consistencies, record snapshot after whole tables are locked. The recorded meta info is exactly the locked snapshot. | ||||||||||||||||||||||
| if conf.Consistency != "lock" { | ||||||||||||||||||||||
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@@ -165,6 +162,20 @@ func Dump(pCtx context.Context, conf *Config) (err error) { | |||||||||||||||||||||
| connectPool.releaseConn(conn) | ||||||||||||||||||||||
| } | ||||||||||||||||||||||
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| if err = conCtrl.TearDown(); err != nil { | ||||||||||||||||||||||
| return err | ||||||||||||||||||||||
| } | ||||||||||||||||||||||
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| failpoint.Inject("ConsistencyCheck", func(val failpoint.Value) { | ||||||||||||||||||||||
| interval, err := time.ParseDuration(val.(string)) | ||||||||||||||||||||||
| if err != nil { | ||||||||||||||||||||||
| log.Warn("inject failpoint ConsistencyCheck failed", zap.Reflect("value", val), zap.Error(err)) | ||||||||||||||||||||||
| } else { | ||||||||||||||||||||||
| log.Info("start to sleep for failpoint ConsistencyCheck", zap.Duration("sleepTime", interval)) | ||||||||||||||||||||||
| time.Sleep(interval) | ||||||||||||||||||||||
| } | ||||||||||||||||||||||
| }) | ||||||||||||||||||||||
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| var writer Writer | ||||||||||||||||||||||
| switch strings.ToLower(conf.FileType) { | ||||||||||||||||||||||
| case "sql": | ||||||||||||||||||||||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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@@ -164,6 +164,7 @@ func SelectAllFromTable(conf *Config, db *sql.Conn, database, table string) (Tab | |
| } | ||
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| func SelectFromSql(conf *Config, db *sql.Conn) (TableDataIR, error) { | ||
| log.Info("dump data from sql", zap.String("sql", conf.Sql)) | ||
| rows, err := db.QueryContext(context.Background(), conf.Sql) | ||
| if err != nil { | ||
| return nil, withStack(errors.WithMessage(err, conf.Sql)) | ||
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@@ -295,18 +296,18 @@ func GetUniqueIndexName(db *sql.Conn, database, table string) (string, error) { | |
| return colName, nil | ||
| } | ||
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| func FlushTableWithReadLock(ctx context.Context, db *sql.Conn) error { | ||
| _, err := db.ExecContext(ctx, "FLUSH TABLES WITH READ LOCK") | ||
| return withStack(err) | ||
| } | ||
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| func LockTables(ctx context.Context, db *sql.Conn, database, table string) error { | ||
| _, err := db.ExecContext(ctx, fmt.Sprintf("LOCK TABLES `%s`.`%s` READ", escapeString(database), escapeString(table))) | ||
| return withStack(err) | ||
| } | ||
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| func UnlockTables(ctx context.Context, db *sql.Conn) error { | ||
| _, err := db.ExecContext(ctx, "UNLOCK TABLES") | ||
| return withStack(err) | ||
| } | ||
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