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release_notes-0.14.0.rst

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Modin 0.14.0

Key Features and Updates

  • Stability and Bugfixes
    • FIX-#4058: Allow pickling empty dataframes and series (#4095)
    • FIX-#4136: Fix exercise_3.ipynb example notebook (#4137)
    • FIX-#4105: Fix names of pandas options to avoid OptionError (#4109)
    • FIX-#3417: Fix read_csv with skiprows and header parameters (#3419)
    • FIX-#4142: Fix OmniSci enabling (#4146)
    • FIX-#4162: Use skipif instead of skip for compatibility with pytest 7.0 (#4163)
    • FIX-#4158: Do not print OmniSci logs to stdout by default (#4159)
    • FIX-#4177: Support read_feather from pathlike objects (#4177)
    • FIX-#4234: Upgrade pandas to 1.4.1 (#4235)
    • FIX-#3368: support unsigned integers in OmniSci backend (#4256)
    • FIX-#4057: Allow reading an empty parquet file (#4075)
    • FIX-#3884: Fix read_excel() dropping empty rows (#4161)
    • FIX-#4257: Fix Categorical() for scalar categories (#4258)
    • FIX-#4300: Fix Modin Categorical column dtype categories (#4276)
    • FIX-#4208: Fix lazy metadata update for PandasDataFrame.from_labels (#4209)
    • FIX-#3981, FIX-#3801, FIX-#4149: Stop broadcasting scalars to set items (#4160)
    • FIX-#4185: Fix rolling across column partitions (#4262)
    • FIX-#4303: Fix the syntax error in reading from postgres (#4304)
    • FIX-#4308: Add proper error handling in df.set_index (#4309)
    • FIX-#4056: Allow an empty parse_date list in read_csv_glob (#4074)
    • FIX-#4312: Fix constructing categorical frame with duplicate column names (#4313).
    • FIX-#4314: Allow passing a series of dtypes to astype (#4318)
    • FIX-#4310: Handle lists of lists of ints in read_csv_glob (#4319)
  • Performance enhancements
    • FIX-#4138, FIX-#4009: remove redundant sorting in the internal '.mask()' flow (#4140)
    • FIX-#4183: Stop shallow copies from creating global shared state. (#4184)
  • Benchmarking enhancements
    • FIX-#4221: add wait method for PandasOnRayDataframeColumnPartition class (#4231)
  • Refactor Codebase
    • REFACTOR-#3990: remove code duplication in PandasDataframePartition hierarchy (#3991)
    • REFACTOR-#4229: remove unused dask_client global variable in modinpandas__init__.py (#4230)
    • REFACTOR-#3997: remove code duplication for broadcast_apply method (#3996)
    • REFACTOR-#3994: remove code duplication for get_indices function (#3995)
    • REFACTOR-#4331: remove code duplication for to_pandas, to_numpy functions in QueryCompiler hierarchy (#4332)
    • REFACTOR-#4213: Refactor modin/examples/tutorial/ directory (#4214)
    • REFACTOR-#4206: add assert check into __init__ method of PandasOnDaskDataframePartition class (#4207)
    • REFACTOR-#3900: add flake8-no-implicit-concat plugin and refactor flake8 error codes (#3901)
    • REFACTOR-#4093: Refactor base to be smaller (#4220)
    • REFACTOR-#4047: Rename cluster directory to cloud in examples (#4212)
    • REFACTOR-#3853: interacting with Dask interface through DaskWrapper class (#3854)
    • REFACTOR-#4322: Move is_reduce_fn outside of groupby_agg (#4323)
  • Pandas API implementations and improvements
    • FEAT-#3603: add experimental read_custom_text function that can read custom line-by-line text files (#3441)
    • FEAT-#979: Enable reading from SQL server (#4279)
  • OmniSci enhancements
  • XGBoost enhancements
  • Developer API enhancements
    • FEAT-#4245: Define base interface for dataframe exchange protocol (#4246)
    • FEAT-#4244: Implement dataframe exchange protocol for HdkOnNative execution (#4269)
    • FEAT-#4144: Implement dataframe exchange protocol for pandas storage format (#4150)
    • FEAT-#4342: Support from_dataframe` for pandas storage format (#4343)
  • Update testing suite
    • TEST-#3628: Report coverage data for test-internals CI job (#4198)
    • TEST-#3938: Test tutorial notebooks in CI (#4145)
    • TEST-#4153: Fix condition of running lint-commit and set of CI triggers (#4156)
    • TEST-#4201: Add read_parquet, explode, tail, and various arithmetic functions to asv_bench (#4203)
  • Documentation improvements
    • DOCS-#4077: Add release notes template to docs folder (#4078)
    • DOCS-#4082: Add pdf/epub/htmlzip formats for doc builds (#4083)
    • DOCS-#4168: Fix rendering the examples on troubleshooting page (#4169)
    • DOCS-#4151: Add info in troubleshooting page related to Dask engine usage (#4152)
    • DOCS-#4172: Refresh Intel Distribution of Modin paragraph (#4175)
    • DOCS-#4173: Mention strict channel priority in conda install section (#4178)
    • DOCS-#4176: Update OmniSci usage section (#4192)
    • DOCS-#4027: Add GIF images and chart to Modin README demonstrating speedups (#4232)
    • DOCS-#3954: Add Dask example notebooks (#4139)
    • DOCS-#4272: Add bar chart comparisons to quick start guide (#4277)
    • DOCS-#3953: Add docs and notebook examples on running Modin with OmniSci (#4001)
    • DOCS-#4280: Change links in jupyter notebooks (#4281)
    • DOCS-#4290: Add changes for OmniSci notebooks (#4291)
    • DOCS-#4241: Update warnings and docs regarding defaulting to pandas (#4242)
    • DOCS-#3099: Fix BasePandasDataSet docstrings warnings (#4333)
    • DOCS-#4339: Reformat I/O functions docstrings (#4341)
    • DOCS-#4336: Reformat general utilities docstrings (#4338)
  • Dependencies
    • FIX-#4113, FIX-#4116, FIX-#4115: Apply new black formatting, fix pydocstyle check and readthedocs build (#4114)
    • TEST-#3227: Use codecov github action instead of bash form in GA workflows (#3226)
    • FIX-#4115: Unpin pip in readthedocs deps list (#4170)
    • TEST-#4217: Pin Dask<2022.2.0 as a temporary fix of CI (#4218)

Contributors

@prutskov @amyskov @paulovn @anmyachev @YarShev @RehanSD @devin-petersohn @dchigarev @Garra1980 @mvashishtha @naren-ponder @jeffreykennethli @dorisjlee @Rubtsowa