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Lazy statistics for columns

enhancementNew feature or requestNew feature or request

good first issueGood issues to pick-up for newcomersGood issues to pick-up for newcomers

performanceSomething related to how fast the library can handle dataSomething related to how fast the library can handle data

Status: Open.

#1492 In Kotlin/dataframe;

· Jolanrensen opened on Oct 13, 2025

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Effecient KotlinNotebokPluginUtils.sortByColumns

performanceSomething related to how fast the library can handle dataSomething related to how fast the library can handle data

Status: Open.

#1436 In Kotlin/dataframe;

· koperagen opened on Sep 9, 2025

Add official and reproducible benchmarks for the CSV readers

csvCSV / delim related issuesCSV / delim related issues

performanceSomething related to how fast the library can handle dataSomething related to how fast the library can handle data

Status: Open.

#1003 In Kotlin/dataframe;

· zaleslaw opened on Dec 16, 2024

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Research: <code>ColumnDataHolder</code>/primitive arrays

performanceSomething related to how fast the library can handle dataSomething related to how fast the library can handle data

researchThis requires a deeper dive to gather a better understandingThis requires a deeper dive to gather a better understanding

Status: Draft (not ready).

Kotlin/dataframenumber 712

#712 In Kotlin/dataframe;

· Jolanrensen opened on Jun 3, 2024

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Pivot rendering in the Koltin notebook plugin is slow

performanceSomething related to how fast the library can handle dataSomething related to how fast the library can handle data

Status: Open.

#674 In Kotlin/dataframe;

· ermolenkodev opened on Apr 25, 2024

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Column limit in output of notebooks

enhancementNew feature or requestNew feature or request

performanceSomething related to how fast the library can handle dataSomething related to how fast the library can handle data

Status: Open.

#512 In Kotlin/dataframe;

· Jolanrensen opened on Nov 21, 2023

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[Performance] Add optimized ValueColumn implementation when all column values are same

performanceSomething related to how fast the library can handle dataSomething related to how fast the library can handle data

Status: Open.

#291 In Kotlin/dataframe;

· nikitinas opened on Mar 4, 2023

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<code>Update</code> performance

performanceSomething related to how fast the library can handle dataSomething related to how fast the library can handle data

Status: Open.

#282 In Kotlin/dataframe;

· Jolanrensen opened on Feb 27, 2023

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large datasets - how to handle them?

performanceSomething related to how fast the library can handle dataSomething related to how fast the library can handle data

researchThis requires a deeper dive to gather a better understandingThis requires a deeper dive to gather a better understanding

Status: Open.

#141 In Kotlin/dataframe;

· nort3x opened on Aug 7, 2022

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Arrow Support

performanceSomething related to how fast the library can handle dataSomething related to how fast the library can handle data

researchThis requires a deeper dive to gather a better understandingThis requires a deeper dive to gather a better understanding

Status: Open.

#78 In Kotlin/dataframe;

· Lundez opened on Dec 21, 2021

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Add primitive arrays column wrappers

performanceSomething related to how fast the library can handle dataSomething related to how fast the library can handle data

researchThis requires a deeper dive to gather a better understandingThis requires a deeper dive to gather a better understanding

Status: Open.

#30 In Kotlin/dataframe;

· altavir opened on Jun 28, 2021

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