@Override
    public ClickHouseInputStream newInputStream(int bufferSize, Runnable postCloseAction) {
        if (!hasInput()) {
            return ClickHouseInputStream.empty();
        }

        try {
            return ClickHouseInputStream.wrap(this, new FileInputStream(getFile()), bufferSize,
                    ClickHouseCompression.NONE, getCompressionLevel(), postCloseAction);
        } catch (FileNotFoundException e) {
            throw new IllegalArgumentException(e);
        }
    }
Null file which has no compression and format.
clickhouse-data/src/main/java/com/clickhouse/data/ClickHouseFile.java