tustvold opened a new issue, #4126: URL: https://github.com/apache/arrow-rs/issues/4126
**Is your feature request related to a problem or challenge? Please describe what you are trying to do.** <!-- A clear and concise description of what the problem is. Ex. I'm always frustrated when [...] (This section helps Arrow developers understand the context and *why* for this feature, in addition to the *what*) --> 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. **Describe the solution you'd like** <!-- A clear and concise description of what you want to happen. --> 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. **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. --> -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
