ZMZ91 commented on code in PR #13838:
URL: https://github.com/apache/arrow/pull/13838#discussion_r969085775
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cpp/src/arrow/dataset/file_csv.cc:
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@@ -196,6 +196,11 @@ static inline
Future<std::shared_ptr<csv::StreamingReader>> OpenReaderAsync(
auto reader_fut = DeferNotOk(input->io_context().executor()->Submit(
[=]() -> Future<std::shared_ptr<csv::StreamingReader>> {
ARROW_ASSIGN_OR_RAISE(auto first_block,
input->Peek(reader_options.block_size));
+ auto size = first_block.length();
+ const uint8_t* data = reinterpret_cast<const
uint8_t*>(first_block.data());
+ ARROW_ASSIGN_OR_RAISE(auto data_no_bom, util::SkipUTF8BOM(data, size));
+ size = size - static_cast<uint32_t>(data_no_bom - data);
+ first_block = util::string_view(reinterpret_cast<const
char*>(data_no_bom), size);
Review Comment:
Thank you @pitrou. I've moved it to `GetColumnNames`.
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