}
	_, rawVal := input.Raw()

	if format != "json" {
		return nil, errDataSource(errors.New("path not supported"))
	}
	switch rec := rawVal.(type) {
	case jstream.KVS:
		txedRec, _, err := jsonpathEval(e.selectAST.From.Table.PathExpr[1:], rec)
		if err != nil {
			return nil, err
		}

		var kvs jstream.KVS
		switch v := txedRec.(type) {
		case jstream.KVS:
			kvs = v

		defer func() {
			if rec := recover(); rec == logger.ErrCritical { // handle
				stack := debug.Stack()
				logger.Error("critical: \"%s %s\": %v\n%s", r.Method, r.URL, rec, string(stack))
				writeErrorResponse(r.Context(), w, errorCodes.ToAPIErr(ErrInternalError), r.URL)
				return
			} else if rec != nil {
				stack := debug.Stack()

		case "stat":
			{
				var zb0002 uint8
				zb0002, err = dc.ReadUint8()
				if err != nil {
					err = msgp.WrapError(err, "status")
					return
				}
				z.status = scanStatus(zb0002)
			}
		case "rec":
			z.recursive, err = dc.ReadBool()
			if err != nil {
				err = msgp.WrapError(err, "recursive")
				return
			}
		case "v":
			z.dataVersion, err = dc.ReadUint8()
			if err != nil {

	go c.monitorState(conn, cancel)

	c.handleMsgWg.Add(2)
	c.reconnectMu.Unlock()

	// Read goroutine
	go func() {
		defer func() {
			if rec := recover(); rec != nil {
				gridLogIf(ctx, fmt.Errorf("handleMessages: panic recovered: %v", rec))
				debug.PrintStack()
			}
			c.connChange.L.Lock()
			if atomic.CompareAndSwapUint32((*uint32)(&c.state), StateConnected, StateConnectionError) {

		return true
	}

	var rec sql.Record
OuterLoop:
	for {
		if s3Select.statement.LimitReached() {
			if !sendRecord() {
				break
			}
			if err = writer.Finish(s3Select.getProgress()); err != nil {
				// FIXME: log this error.
				err = nil
			}
			break
		}

		if rec, err = s3Select.recordReader.Read(rec); err != nil {
			if err != io.EOF {
				break
			}

 *  * BER: Basic Encoding Rules.
 *
 * This class was implemented according to the [X.690 spec][[x690]], and under the advice of
 * [Lets Encrypt's ASN.1 and DER][asn1_and_der] guide.
 *
 * [x690]: https://www.itu.int/rec/T-REC-X.690
 * [asn1_and_der]: https://letsencrypt.org/docs/a-warm-welcome-to-asn1-and-der/
 */
internal class DerReader(source: Source) {
  private val countingSource: CountingSource = CountingSource(source)

	if n <= 0 {
		return "", "", s, ErrHeader
	}

	// Extract everything between the space and the final newline.
	rec, nl, rem := rest[:n-1], rest[n-1:n], rest[n:]
	if nl != "\n" {
		return "", "", s, ErrHeader
	}

	// The first equals separates the key from the value.
	k, v, ok = strings.Cut(rec, "=")
	if !ok {
		return "", "", s, ErrHeader
	}

	if !validPAXRecord(k, v) {
		return "", "", s, ErrHeader

	fr, err := parquetgo.NewFileReader(rsc)
	if err != nil {
		return nil, errParquetParsingError(err)
	}

	return &Reader{Closer: rsc, r: fr}, nil
}

func (pr *Reader) Read(dst sql.Record) (rec sql.Record, rerr error) {
	nextRow, err := pr.r.NextRow()
	if err != nil {
		if err == io.EOF {
			return nil, err
		}
		return nil, errParquetParsingError(err)
	}

	kvs := jstream.KVS{}

	id           string     `msg:"id"`
	error        string     `msg:"err"`
	root         string     `msg:"root"`
	fileNotFound bool       `msg:"fnf"`
	status       scanStatus `msg:"stat"`
	recursive    bool       `msg:"rec"`
	dataVersion  uint8      `msg:"v"`
}

func (m *metacache) finished() bool {
	return !m.ended.IsZero()
}

// worthKeeping indicates if the cache by itself is worth keeping.

			keys = append(keys, k)
		}
		sort.Strings(keys)

		// Write each record to a buffer.
		var buf strings.Builder
		for _, k := range keys {
			rec, err := formatPAXRecord(k, paxHdrs[k])
			if err != nil {
				return err
			}
			buf.WriteString(rec)
		}

		// Write the extended header file.
		var name string
		var flag byte
		if isGlobal {
			name = realName
			if name == "" {