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Posted to issues@arrow.apache.org by "kou (via GitHub)" <gi...@apache.org> on 2024/05/31 22:47:16 UTC
[I] [C++] Add arrow::ArrayStatistics [arrow]
kou opened a new issue, #41909:
URL: https://github.com/apache/arrow/issues/41909
### Describe the enhancement requested
An Arrow array doesn't have statistics but Arrow array source such as Parquet column may have statistics.
We can get the source statistics via source reader such as `parquet::ColumnChunkMetaData::statistics()` (`parquet::ParquetFileReader::metadata()->RowGroup(X)->ColumnChunk(Y)->statistics()`) but can't get read Arrow array (e.g. `parquet::arrow::FileReader::ReadColumn()`).
### Component(s)
C++
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Re: [I] [C++] Add arrow::ArrayStatistics [arrow]
Posted by "kou (via GitHub)" <gi...@apache.org>.
kou commented on issue #41909:
URL: https://github.com/apache/arrow/issues/41909#issuecomment-2267398491
Issue resolved by pull request 43273
https://github.com/apache/arrow/pull/43273
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Re: [I] [C++] Add arrow::ArrayStatistics [arrow]
Posted by "llama90 (via GitHub)" <gi...@apache.org>.
llama90 commented on issue #41909:
URL: https://github.com/apache/arrow/issues/41909#issuecomment-2143269811
I think this is a great idea.
Adding `arrow::ArrayStatistics` and connecting source statistics to `arrow::Array` will help users get and use statistics directly from Arrow arrays.
This can make Arrow easier to use, especially for people working with data sources like Parquet that have statistics.
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Re: [I] [C++] Add arrow::ArrayStatistics [arrow]
Posted by "kou (via GitHub)" <gi...@apache.org>.
kou closed issue #41909: [C++] Add arrow::ArrayStatistics
URL: https://github.com/apache/arrow/issues/41909
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Re: [I] [C++] Add arrow::ArrayStatistics [arrow]
Posted by "kou (via GitHub)" <gi...@apache.org>.
kou commented on issue #41909:
URL: https://github.com/apache/arrow/issues/41909#issuecomment-2144160539
The mailing list discussion: https://lists.apache.org/thread/kcpyq9npnh346pw90ljwbg0wxq6hwxxh
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