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Compare DataType based on memory size #4919

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ch-sc opened this issue Oct 11, 2023 · 1 comment
Closed

Compare DataType based on memory size #4919

ch-sc opened this issue Oct 11, 2023 · 1 comment
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development-process Related to development process of arrow-rs enhancement Any new improvement worthy of a entry in the changelog

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@ch-sc
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ch-sc commented Oct 11, 2023

Is your feature request related to a problem or challenge? Please describe what you are trying to do.

Related datafusion issue: apache/datafusion#3214

I would like to order fields of a schema based on the datatype's memory size to find the column with the presumable lowest memory footprint at query planning time.

Describe the solution you'd like

Implement Ord for DataType and base cmp on memory size.

Describe alternatives you've considered

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Additional context

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@ch-sc ch-sc added the enhancement Any new improvement worthy of a entry in the changelog label Oct 11, 2023
@ch-sc ch-sc mentioned this issue Oct 11, 2023
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@ch-sc
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ch-sc commented Oct 11, 2023

Will be implemented in DataFusion

@ch-sc ch-sc closed this as completed Oct 11, 2023
@tustvold tustvold added the development-process Related to development process of arrow-rs label Oct 11, 2023
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development-process Related to development process of arrow-rs enhancement Any new improvement worthy of a entry in the changelog
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Implement Ord for DataType ch-sc/arrow-rs
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@tustvold @ch-sc