Chao Sun created ARROW-13941:
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Summary: [C++] Parquet writes incorrect file_offset
Key: ARROW-13941
URL: https://issues.apache.org/jira/browse/ARROW-13941
Project: Apache Arrow
Issue Type: Bug
Components: Parquet
Reporter: Chao Sun
Currently the Parquet writer set {{file_offset}} in the following way:
{code:cpp}
if (dictionary_page_offset > 0) {
column_chunk_->meta_data.__set_dictionary_page_offset(dictionary_page_offset);
column_chunk_->__set_file_offset(dictionary_page_offset +
compressed_size);
} else {
column_chunk_->__set_file_offset(data_page_offset + compressed_size);
}{code}
This doesn't look correct, and seems it should not take {{compressed_size}}
into consideration.
The {{file_offset}} is used when filtering row groups, and the issue could
cause correctness issue. See SPARK-36696.
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