mapleFU commented on PR #57:
URL: https://github.com/apache/parquet-testing/pull/57#issuecomment-2307509744
I finally catch this. This file has zero-sized dictionary bit-width. With
diff:
```
diff --git a/cpp/src/arrow/util/bit_stream_utils_internal.h
b/cpp/src/arrow/util/bit_stream_utils_internal.h
index 811694e43..176d4b1d9 100644
--- a/cpp/src/arrow/util/bit_stream_utils_internal.h
+++ b/cpp/src/arrow/util/bit_stream_utils_internal.h
@@ -22,6 +22,7 @@
#include <algorithm>
#include <cstdint>
#include <cstring>
+#include <iostream>
#include "arrow/util/bit_util.h"
#include "arrow/util/bpacking.h"
@@ -312,6 +313,7 @@ inline bool BitReader::GetValue(int num_bits, T* v) {
template <typename T>
inline int BitReader::GetBatch(int num_bits, T* v, int batch_size) {
+ std::cout << "Unpack:" << num_bits << ", batch-size:" << batch_size <<
'\n';
DCHECK(buffer_ != NULL);
DCHECK_LE(num_bits, static_cast<int>(sizeof(T) * 8)) << "num_bits: " <<
num_bits;
diff --git a/cpp/src/parquet/encoding.cc b/cpp/src/parquet/encoding.cc
index 16a1e2492..b76ca1b2d 100644
--- a/cpp/src/parquet/encoding.cc
+++ b/cpp/src/parquet/encoding.cc
@@ -1626,6 +1626,7 @@ class DictDecoderImpl : public DecoderImpl, virtual
public DictDecoder<Type> {
throw ParquetException("Invalid or corrupted bit_width " +
std::to_string(bit_width) + ". Maximum allowed
is 32.");
}
+ std::cout << "Dictionary bit-width: " << int(bit_width) << '\n';
idx_decoder_ = ::arrow::util::RleDecoder(++data, --len, bit_width);
}
```
The dictionary bit-width is 0 here in the output.
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