return false
			}
		}

		if err = writer.SendRecord(buf); err != nil {
			// FIXME: log this error.
			err = nil
			bufPool.Put(buf)
			return false
		}
		outputQueue = outputQueue[:0]
		return true
	}

	var rec sql.Record
OuterLoop:
	for {
		if s3Select.statement.LimitReached() {
			if !sendRecord() {
				break
			}

	for len(writer.payloadCh) > 0 {
		payload := <-writer.payloadCh
		bufPool.Put(payload)
	}
}

// Sends a single whole record.
func (writer *messageWriter) SendRecord(payload *bytes.Buffer) error {
	select {
	case writer.payloadCh <- payload:
		return nil
	case <-writer.doneCh:
		return fmt.Errorf("messageWriter is done")
	}
}