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mars-project/mars

#3360

· wjsi opened

on Sep 25, 2023

[BUG] `groupby` failed when using categorical columns with `as_index=False`

#3036

· hekaisheng opened

on May 13, 2022

Fix errors when calling `df.agg("nunique")`

to be backported

mars-project/mars

#2970

· wjsi opened

on Apr 26, 2022

Using aggregation instead of transform to perform `df.groupby().nunique()`

task: medium

#2966

· qinxuye opened

on Apr 26, 2022

[BUG] Result inconsistent when intermediate results executed

#2898

· wjsi opened

on Apr 2, 2022

Implements `{DataFrame,Series}.{combine,combine_first}`

#2872

· wjsi opened

on Mar 25, 2022

Improve performance of building expr, subtask graph etc

mod: task service

#2791

· qinxuye opened

on Mar 7, 2022

Optimize performance of GroupBy.nunique

task: medium

#2737

· hekaisheng opened

on Feb 21, 2022

Reduction over different columns of a single DataFrame can be merged

#2560

· wjsi opened

on Oct 28, 2021

[BUG] Series.drop_duplicates raised a `TypeError`

#2518

· hekaisheng opened

on Oct 13, 2021

[BUG] sort_values failed after using dropna

#2488

· hoarjour opened

on Sep 27, 2021

Implement pandas.DataFrame.pivot API

#2460

· chaokunyang opened

on Sep 16, 2021

Support DataFrame indexing with mars Tensor

#2440

· MaxwellLZH opened

on Sep 8, 2021

Allow using md.loc to set values

prio: high

#2430

· ZYLi24 opened

on Sep 6, 2021

Allow not to specify `dtypes` for `df.apply`, `df.groupby().apply` and so forth.

#2394

· qinxuye opened

on Aug 27, 2021

Support dataframe indexing using df.iloc with mars tensor

#2353

· hekaisheng opened

on Aug 19, 2021

[BUG] `df.apply` failed when unknown chunks exist on the apply axis.

#2329

· qinxuye opened

on Aug 13, 2021

[BUG]failed call mars.tensor.sum in mars.dataframe.apply

#2219

· trotsky1997 opened

on Jul 15, 2021

[BUG]The index of the merge result is not as expected

#2184

· zebivy opened

on Jul 1, 2021

Mars df.to_csv() does not support mode than 'w' for now

prio: high

#2079

· sznariOsmosis opened

on Apr 2, 2021

Can you help make this interface--df.to_pickle(), Pickle data helps to ensure that the original data type does not change

prio: high

#2057

· sznariOsmosis opened

on Mar 22, 2021

[BUG] Support creating mars Series using dict with mars tensor as values

#2029

· hekaisheng opened

on Mar 8, 2021

Implements `read_json` and `to_json`

#1841

· wjsi opened

on Dec 25, 2020

Implements `{DataFrame,Series}.tolist`