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Posted to github@arrow.apache.org by "tustvold (via GitHub)" <gi...@apache.org> on 2023/04/25 16:35:17 UTC
[GitHub] [arrow-rs] tustvold opened a new issue, #4126: Truncate ColumnIndex ByteArray Statistics
tustvold opened a new issue, #4126:
URL: https://github.com/apache/arrow-rs/issues/4126
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From the [specification](https://github.com/apache/parquet-format/blob/master/PageIndex.md)
> These may be the actual minimum and maximum values found on a page, but can also be (more compact) values that do not exist on a page. For example, instead of storing ""Blart Versenwald III", a writer may set min_values[i]="B", max_values[i]="C". This allows writers to truncate large values and writers should use this to enforce some reasonable bound on the size of the index structures.
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I would like `ColumnIndexBuilder` to provide an option to limit the maximum length of the generated column index statistics, set by WriterProperties. This should probably have a reasonable default of something like 128 bytes.
The specification isn't clear about whether truncation of column chunk statistics is valid, and so we should ensure that they are not truncated to avoid incompatibility.
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[GitHub] [arrow-rs] alamb commented on issue #4126: Truncate ColumnIndex ByteArray Statistics
Posted by "alamb (via GitHub)" <gi...@apache.org>.
alamb commented on issue #4126:
URL: https://github.com/apache/arrow-rs/issues/4126#issuecomment-1595001188
`label_issue.py` automatically added labels {'parquet'} from #4389
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[GitHub] [arrow-rs] tustvold commented on issue #4126: Truncate ColumnIndex ByteArray Statistics
Posted by "tustvold (via GitHub)" <gi...@apache.org>.
tustvold commented on issue #4126:
URL: https://github.com/apache/arrow-rs/issues/4126#issuecomment-1522096559
Marking as "good first issue" as I think this should be a relatively straightforward addition
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[GitHub] [arrow-rs] tustvold closed issue #4126: Truncate ColumnIndex ByteArray Statistics
Posted by "tustvold (via GitHub)" <gi...@apache.org>.
tustvold closed issue #4126: Truncate ColumnIndex ByteArray Statistics
URL: https://github.com/apache/arrow-rs/issues/4126
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[GitHub] [arrow-rs] AdamGS commented on issue #4126: Truncate ColumnIndex ByteArray Statistics
Posted by "AdamGS (via GitHub)" <gi...@apache.org>.
AdamGS commented on issue #4126:
URL: https://github.com/apache/arrow-rs/issues/4126#issuecomment-1582494152
If no one else picket this up, I might take a stab at it.
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