示例#1
0
// writeTableDesc implements the SchemaAccessor interface.
func (p *planner) writeTableDesc(tableDesc *sqlbase.TableDescriptor) error {
	if isVirtualDescriptor(tableDesc) {
		panic(fmt.Sprintf("Virtual Descriptors cannot be stored, found: %v", tableDesc))
	}
	return p.txn.Put(sqlbase.MakeDescMetadataKey(tableDesc.GetID()),
		sqlbase.WrapDescriptor(tableDesc))
}
示例#2
0
func restoreTable(
	ctx context.Context,
	sst engine.RocksDBSstFileReader,
	txn *client.Txn,
	table *sqlbase.TableDescriptor,
	overwrite bool,
) error {
	log.Infof(ctx, "Restoring Table %q", table.Name)

	tableStartKey := roachpb.Key(sqlbase.MakeIndexKeyPrefix(table, table.PrimaryIndex.ID))
	tableEndKey := tableStartKey.PrefixEnd()

	existingDesc, err := txn.Get(sqlbase.MakeDescMetadataKey(table.GetID()))
	if err != nil {
		return err
	}
	existingData, err := txn.Scan(tableStartKey, tableEndKey, 1)
	if err != nil {
		return err
	}
	if existingDesc.Value != nil || len(existingData) > 0 {
		if overwrite {
			// We're about to Put the descriptor, so don't bother deleting it.
			if err := txn.DelRange(tableStartKey, tableEndKey); err != nil {
				return err
			}
		} else {
			return errors.Errorf("table %q already exists", table.Name)
		}
	}
	tableDescKey := sqlbase.MakeDescMetadataKey(table.GetID())
	if err := txn.Put(tableDescKey, sqlbase.WrapDescriptor(table)); err != nil {
		return err
	}

	return Import(ctx, sst, txn, engine.MVCCKey{Key: tableStartKey}, engine.MVCCKey{Key: tableEndKey})
}
示例#3
0
// writeTableDesc implements the SchemaAccessor interface.
func (p *planner) writeTableDesc(tableDesc *sqlbase.TableDescriptor) error {
	return p.txn.Put(sqlbase.MakeDescMetadataKey(tableDesc.GetID()),
		sqlbase.WrapDescriptor(tableDesc))
}