n3world commented on a change in pull request #10794:
URL: https://github.com/apache/arrow/pull/10794#discussion_r677556221
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File path: cpp/src/arrow/csv/column_decoder.cc
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@@ -198,6 +198,11 @@ Result<std::shared_ptr<Array>>
InferringColumnDecoder::RunInference(
Future<std::shared_ptr<Array>> InferringColumnDecoder::Decode(
const std::shared_ptr<BlockParser>& parser) {
+ if (parser->num_rows() == 0) {
Review comment:
I think I'll keep empty array because as you point out nullptr usually
indicates EOF and to avoid any dereference issues from the downstream
converters which assume no nulls.
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