felipecrv commented on code in PR #34526:
URL: https://github.com/apache/arrow/pull/34526#discussion_r1139092769
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cpp/src/parquet/encoding.cc:
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@@ -466,6 +465,15 @@ struct DictEncoderTraits<FLBAType> {
// Initially 1024 elements
static constexpr int32_t kInitialHashTableSize = 1 << 10;
+int RlePreserveBufferSize(int num_values, int bit_width) {
+ // Note: because of the way RleEncoder::CheckBufferFull() is called, we have
to
+ // reserve
+ // an extra "RleEncoder::MinBufferSize" bytes. These extra bytes won't be
used
+ // but not reserving them would cause the encoder to fail.
+ return 1 + ::arrow::util::RleEncoder::MaxBufferSize(bit_width, num_values) +
+ ::arrow::util::RleEncoder::MinBufferSize(bit_width);
Review Comment:
I supposes you extracted a new function here for clarity, but you call in
multiple places now?
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