emkornfield commented on a change in pull request #11710:
URL: https://github.com/apache/arrow/pull/11710#discussion_r751036656
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File path: cpp/src/parquet/encoding.cc
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@@ -2265,21 +2269,27 @@ class DeltaLengthByteArrayDecoder : public DecoderImpl,
}
int Decode(ByteArray* buffer, int max_values) override {
+ // Decode up to `max_values` strings into an internal buffer
+ // and reference them into `buffer`.
max_values = std::min(max_values, num_valid_values_);
- int64_t data_size = 0;
+ int32_t data_size = 0;
Review comment:
I think pages can only hold int32max values in them (row groups can hold
more and apparently we have a bug someplace when reading). So this makes
sense.
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