emkornfield commented on a change in pull request #8629:
URL: https://github.com/apache/arrow/pull/8629#discussion_r520734627
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File path: cpp/src/parquet/column_reader.cc
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@@ -442,8 +442,10 @@ std::shared_ptr<Page> SerializedPageReader::NextPage() {
header.repetition_levels_byte_length,
&levels_byte_len)) {
throw ParquetException("Levels size too large (corrupt file?)");
}
- page_buffer = DecompressIfNeeded(std::move(page_buffer), compressed_len,
- uncompressed_len, levels_byte_len);
+ if (is_compressed) {
+ page_buffer = DecompressIfNeeded(std::move(page_buffer),
compressed_len,
Review comment:
could you add a comment here. The logic reads strangely to me because I
would assume is_compressed is somehow accounted for in DecompressIfNeeded.
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