emkornfield commented on a change in pull request #11984:
URL: https://github.com/apache/arrow/pull/11984#discussion_r779308172
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File path: cpp/src/parquet/column_reader.cc
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@@ -980,7 +983,7 @@ int64_t TypedColumnReaderImpl<DType>::ReadBatch(int64_t
batch_size, int16_t* def
int16_t* rep_levels, T* values,
int64_t* values_read) {
// HasNext invokes ReadNewPage
- if (!HasNext()) {
+ if (batch_size == 0 || !HasNext()) {
Review comment:
maybe add a comment document the use-case for batch_size == 0 here.
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