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Documentation

Index

• Constants
• func CancelJobs(txn kv.Transaction, ids []int64) ([]error, error)
• func CheckIndicesCount(ctx sessionctx.Context, dbName, tableName string, indices []string) error
• func CheckRecordAndIndex(sc *stmtctx.StatementContext, txn kv.Transaction, t table.Table, ...) error
• func CompareIndexData(sc *stmtctx.StatementContext, txn kv.Transaction, t table.Table, ...) error
• func CompareTableRecord(txn kv.Transaction, t table.Table, data []*RecordData, exact bool) error
• func GetDDLJobs(txn kv.Transaction) ([]*model.Job, error)
• func GetHistoryDDLJobs(txn kv.Transaction) ([]*model.Job, error)
• type DDLInfo
  • func GetDDLInfo(txn kv.Transaction) (*DDLInfo, error)
• type RecordData
  • func ScanIndexData(sc *stmtctx.StatementContext, txn kv.Transaction, kvIndex table.Index, ...) ([]*RecordData, []types.Datum, error)
  • func ScanSnapshotTableRecord(store kv.Storage, ver kv.Version, t table.Table, startHandle, limit int64) ([]*RecordData, int64, error)
  • func ScanTableRecord(retriever kv.Retriever, t table.Table, startHandle, limit int64) ([]*RecordData, int64, error)

Constants

const MaxHistoryJobs = 10

MaxHistoryJobs is exported for testing.

Functions

func CancelJobs

func CancelJobs(txn kv.Transaction, ids []int64) ([]error, error)

CancelJobs cancels the DDL jobs.

func CheckIndicesCount

func CheckIndicesCount(ctx sessionctx.Context, dbName, tableName string, indices []string) error

CheckIndicesCount compares indices count with table count. It returns nil if the count from the index is equal to the count from the table columns, otherwise it returns an error with a different information.

func CheckRecordAndIndex

func CheckRecordAndIndex(sc *stmtctx.StatementContext, txn kv.Transaction, t table.Table, idx table.Index) error

CheckRecordAndIndex is exported for testing.

func CompareIndexData

func CompareIndexData(sc *stmtctx.StatementContext, txn kv.Transaction, t table.Table, idx table.Index) error

CompareIndexData compares index data one by one. It returns nil if the data from the index is equal to the data from the table columns, otherwise it returns an error with a different set of records.

func CompareTableRecord

func CompareTableRecord(txn kv.Transaction, t table.Table, data []*RecordData, exact bool) error

CompareTableRecord compares data and the corresponding table data one by one. It returns nil if data is equal to the data that scans from table, otherwise it returns an error with a different set of records. If exact is false, only compares handle.

func GetDDLJobs

func GetDDLJobs(txn kv.Transaction) ([]*model.Job, error)

GetDDLJobs returns the DDL jobs and an error.

func GetHistoryDDLJobs

func GetHistoryDDLJobs(txn kv.Transaction) ([]*model.Job, error)

GetHistoryDDLJobs returns the DDL history jobs and an error. The maximum count of history jobs is MaxHistoryJobs.

Types

type DDLInfo

type DDLInfo struct {
	SchemaVer   int64
	ReorgHandle int64 // it's only used for DDL information.
	Job         *model.Job
}

DDLInfo is for DDL information.

func GetDDLInfo

func GetDDLInfo(txn kv.Transaction) (*DDLInfo, error)

GetDDLInfo returns DDL information.

type RecordData

type RecordData struct {
	Handle int64
	Values []types.Datum
}

RecordData is the record data composed of a handle and values.

func ScanIndexData

func ScanIndexData(sc *stmtctx.StatementContext, txn kv.Transaction, kvIndex table.Index, startVals []types.Datum, limit int64) (
	[]*RecordData, []types.Datum, error)

ScanIndexData scans the index handles and values in a limited number, according to the index information. It returns data and the next startVals until it doesn't have data, then returns data is nil and the next startVals is the values which can't get data. If startVals = nil and limit = -1, it returns the index data of the whole.

func ScanSnapshotTableRecord

func ScanSnapshotTableRecord(store kv.Storage, ver kv.Version, t table.Table, startHandle, limit int64) (
	[]*RecordData, int64, error)

ScanSnapshotTableRecord scans the ver version of the table data in a limited number. It returns data and the next startHandle until it doesn't have data, then returns data is nil and the next startHandle is the handle which can't get data. If startHandle = 0 and limit = -1, it returns the table data of the whole.

func ScanTableRecord

func ScanTableRecord(retriever kv.Retriever, t table.Table, startHandle, limit int64) (
	[]*RecordData, int64, error)

ScanTableRecord scans table row handles and column values in a limited number. It returns data and the next startHandle until it doesn't have data, then returns data is nil and the next startHandle is the handle which can't get data. If startHandle = 0 and limit = -1, it returns the table data of the whole.