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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2022/05/26 07:09:58 UTC

[GitHub] [arrow-rs] Ted-Jiang opened a new issue, #1749: Parquet: Read support for PageIndex (ColumnIndex / OffsetIndex)

Ted-Jiang opened a new issue, #1749:
URL: https://github.com/apache/arrow-rs/issues/1749

   **Is your feature request related to a problem or challenge? Please describe what you are trying to do.**
   follow #1705 
   Goal:
   Index granularity - per page (used row Group).
   Make selective scans on both sorting & non-sorting columns efficient(maybe).
   No additional I/O & deserialization costs for non-selective filter.
   
   **Describe the solution you'd like**
   There is already store the PageIndex Index just above the footer. Store offset and length in col metadata.
   Using these index with `Row Alignment ` filter page without decode+decompress.
   
   - [ ] Add read options for column index based filtering
   - [ ] Prepare and construct index from  col metadata for skipping pages at reading
   - [ ] implement page filtering with Row Alignment.
   
   **Describe alternatives you've considered**
   A clear and concise description of any alternative solutions or features you've considered.
   
   **Additional context**
   Add any other context or screenshots about the feature request here.
   


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[GitHub] [arrow-rs] tustvold closed issue #1749: Parquet: Support read process for PageIndex (ColumnIndex / OffsetIndex)

Posted by GitBox <gi...@apache.org>.
tustvold closed issue #1749: Parquet: Support read process for PageIndex (ColumnIndex / OffsetIndex) 
URL: https://github.com/apache/arrow-rs/issues/1749


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