writerFooter is not supported for ORC file format

[rui-mo]

Description

ORC reader needs to parse footer as photo::orc::Footer.

velox/velox/dwio/dwrf/reader/ReaderBase.cpp

Lines 200 to 204 in 4adec18

	if (fileFormat() == FileFormat::DWRF) {
	footer_ = parseFooter<proto::Footer>(decompressed.get(), arena_.get());
	} else {
	footer_ = parseFooter<proto::orc::Footer>(decompressed.get(), arena_.get());
	}

Velox now only supports writing footer as the DWRF proto::Footer.

velox/velox/dwio/dwrf/writer/WriterBase.cpp

Line 23 in 4adec18

void WriterBase::writeFooter(const Type& type) {

When testing the ORC decimal read and write, we find that the ORC reader parses the precision and scale information from footer while the DWRF footer does not contain them. Long decimal type needs to be written as hugeint kind in the ORC footer while the DWRF format does not contain hugeint type.

[majetideepak]

@rui-mo We need to create/extend the FooterWrapper for the write path similar to the read path.
Orc Format must be written into proto::orc::Footer

[pedroerp]

Cc: @Yuhta