v22.10.00

🚨 Breaking Changes

• Disable Zstandard decompression on nvCOMP 2.4 and Pascal GPus (#11856) @vuule
• Disable nvCOMP DEFLATE integration (#11811) @vuule
• Fix return type of Index.isna & Index.notna (#11769) @galipremsagar
• Remove kwargs in read_csv & to_csv (#11762) @galipremsagar
• Fix cudf::partition* APIs that do not return offsets for empty output table (#11709) @ttnghia
• Fix regex negated classes to not automatically include new-lines (#11644) @davidwendt
• Update zfill to match Python output (#11634) @davidwendt
• Upgrade pandas to 1.5 (#11617) @galipremsagar
• Change default value of ordered to False in CategoricalDtype (#11604) @galipremsagar
• Move cudf::strings::findall_record to cudf::strings::findall (#11575) @davidwendt
• Adding optional parquet reader schema (#11524) @hyperbolic2346
• Deprecate skiprows and num_rows in read_orc (#11522) @galipremsagar
• Remove support for skip_rows / num_rows options in the parquet reader. (#11503) @nvdbaranec
• Drop support for skiprows and num_rows in cudf.read_parquet (#11480) @galipremsagar
• Disable Arrow S3 support by default. (#11470) @bdice
• Convert thrust::optional usages to std::optional (#11455) @robertmaynard
• Remove unused is_struct trait. (#11450) @bdice
• Refactor the Buffer class (#11447) @madsbk
• Return empty dataframe when reading an ORC file using empty columns option (#11446) @vuule
• Refactor pad_side and strip_type enums into side_type enum (#11438) @davidwendt
• Remove HASH_SERIAL_MURMUR3 / serial32BitMurmurHash3 (#11383) @bdice
• Use the new JSON parser when the experimental reader is selected (#11364) @vuule
• Remove deprecated Series.applymap. (#11031) @bdice
• Remove deprecated expand parameter from str.findall. (#11030) @bdice

🐛 Bug Fixes

• Fixes bug in temporary decompression space estimation before calling nvcomp (#11879) @abellina
• Handle ptx file paths during strings_udf import (#11862) @galipremsagar
• Disable Zstandard decompression on nvCOMP 2.4 and Pascal GPus (#11856) @vuule
• Reset strings_udf CEC and solve several related issues (#11846) @brandon-b-miller
• Fix bug in new shuffle-based groupby implementation (#11836) @rjzamora
• Fix is_valid checks in Scalar._binaryop (#11818) @wence-
• Fix operator NotImplemented issue with numpy (#11816) @galipremsagar
• Disable nvCOMP DEFLATE integration (#11811) @vuule
• Build strings_udf package with other python packages in nightlies (#11808) @brandon-b-miller
• Revert problematic shuffle=explicit-comms changes (#11803) @rjzamora
• Fix regex out-of-bounds write in strided rows logic (#11797) @davidwendt
• Build cudf locally before building strings_udf conda packages in CI (#11785) @brandon-b-miller
• Fix an issue in cudf::row_bit_count involving structs and lists at multiple levels. (#11779) @nvdbaranec
• Fix return type of Index.isna & Index.notna (#11769) @galipremsagar
• Fix issue with set-item incase of list and struct types (#11760) @galipremsagar
• Ensure all libcudf APIs run on cudf's default stream (#11759) @vyasr
• Resolve dask_cudf failures caused by upstream groupby changes (#11755) @rjzamora
• Fix ORC string sum statistics (#11740) @vuule
• Add strings_udf package for python 3.9 (#11730) @brandon-b-miller
• Ensure that all tests launch kernels on cudf's default stream (#11726) @vyasr
• Don't assume stream is a compile-time constant expression (#11725) @vyasr
• Fix get_thrust.cmake format at patch command (#11715) @davidwendt
• Fix cudf::partition* APIs that do not return offsets for empty output table (#11709) @ttnghia
• Fix cudf::lists::sort_lists for NaN and Infinity values (#11703) @davidwendt
• Modify ORC reader timestamp parsing to match the apache reader behavior (#11699) @vuule
• Fix DataFrame.from_arrow to preserve type metadata (#11698) @galipremsagar
• Fix compile error due to missing header (#11697) @ttnghia
• Default to Snappy compression in to_orc when using cuDF or Dask (#11690) @vuule
• Fix an issue related to Multindex when group_keys=True (#11689) @galipremsagar
• Transfer correct dtype to exploded column (#11687) @wence-
• Ignore protobuf generated files in mypy checks (#11685) @galipremsagar
• Maintain the index name after .loc (#11677) @shwina
• Fix issue with extracting nested column data & dtype preservation (#11671) @galipremsagar
• Ensure that all cudf tests and benchmarks are conda env aware (#11666) @robertmaynard
• Update to Thrust 1.17.2 to fix cub ODR issues (#11665) @robertmaynard
• Fix multi-file remote datasource bug (#11655) @rjzamora
• Fix invalid regex quantifier check to not include alternation (#11654) @davidwendt
• Fix bug in device_write(): it uses an incorrect size (#11651) @madsbk
• fixes overflows in benchmarks (#11649) @elstehle
• Fix regex negated classes to not automatically include new-lines (#11644) @davidwendt
• Fix compile error in benchmark nested_json.cpp (#11637) @davidwendt
• Update zfill to match Python output (#11634) @davidwendt
• Removed converted type for INT32 and INT64 since they do not convert (#11627) @hyperbolic2346
• Fix host scalars construction of nested types (#11612) @galipremsagar
• Fix compile warning in nested_json_gpu.cu (#11607) @davidwendt
• Change default value of ordered to False in CategoricalDtype (#11604) @galipremsagar
• Preserve order if necessary when deduping categoricals internally (#11597) @brandon-b-miller
• Add is_timestamp test for leap second (60) (#11594) @davidwendt
• Fix an issue with to_arrow when column name type is not a string (#11590) @galipremsagar
• Fix exception in segmented-reduce benchmark (#11588) @davidwendt
• Fix encode/decode of negative timestamps in ORC reader/writer (#11586) @vuule
• Correct distribution data type in quantiles benchmark (#11584) @vuule
• Fix multibyte_split benchmark for host buffers (#11583) @upsj
• xfail custreamz display test for now (#11567) @shwina
• Fix JNI for TableWithMeta to use schema_info instead of column_names (#11566) @jlowe
• Reduce code duplication for dask & distributed nightly/stable installs (#11565) @galipremsagar
• Fix groupby failures in dask_cudf CI (#11561) @rjzamora
• Fix for pivot: error when 'values' is a multicharacter string (#11538) @shaswat-indian
• find_package(cudf) + arrow9 usable with cudf build directory (#11535) @robertmaynard
• Fixing crash when writing binary nested data in parquet (#11526) @hyperbolic2346
• Fix for: error when assigning a value to an empty series (#11523) @shaswat-indian
• Fix invalid results from conditional-left-anti-join in debug build (#11517) @davidwendt
• Fix cmake error after upgrading to Arrow 9 (#11513) @ttnghia
• Fix reverse binary operators acting on a host value and cudf.Scalar (#11512) @bdice
• Update parquet fuzz tests to drop support for skiprows & num_rows (#11505) @galipremsagar
• Use rapids-cmake 22.10 best practice for RAPIDS.cmake location (#11493) @robertmaynard
• Handle some zero-sized corner cases in dlpack interop (#11449) @wence-
• Return empty dataframe when reading an ORC file using empty columns option (#11446) @vuule
• libcudf c++ example updated to CPM version 0.35.3 (#11417) @robertmaynard
• Fix regex quantifier check to include capture groups (#11373) @davidwendt
• Fix read_text when byte_range is aligned with field (#11371) @upsj
• Fix to_timestamps truncated subsecond calculation (#11367) @davidwendt
• column: calculate null_count before release()ing the cudf::column (#11365) @wence-

📖 Documentation

• Update guide-to-udfs notebook (#11861) @brandon-b-miller
• Update docstring for cudf.read_text (#11799) @GregoryKimball
• Add doc section for list & struct handling (#11770) @galipremsagar
• Document that minimum required CMake version is now 3.23.1 (#11751) @robertmaynard
• Update libcudf documentation build command in DOCUMENTATION.md (#11735) @davidwendt
• Add docs for use of string data to DataFrame.apply and Series.apply and update guide to UDFs notebook (#11733) @brandon-b-miller
• Enable more Pydocstyle rules (#11582) @bdice
• Remove unused cpp/img folder (#11554) @davidwendt
• Publish C++ developer docs (#11475) @vyasr
• Fix a misalignment in cudf.get_dummies docstring (#11443) @galipremsagar
• Update contributing doc to include links to the developer guides (#11390) @davidwendt
• Fix table_view_base doxygen format (#11340) @davidwendt
• Create main developer guide for Python (#11235) @vyasr
• Add developer documentation for benchmarking (#11122) @vyasr
• cuDF error handling document (#7917) @isVoid

🚀 New Features

• Add hasNull statistic reading ability to ORC (#11747) @devavret
• Add istitle to string UDFs (#11738) @brandon-b-miller
• JSON Column creation in GPU (#11714) @karthikeyann
• Adds option to take explicit nested schema for nested JSON reader (#11682) @elstehle
• Add BGZIP data_chunk_reader (#11652) @upsj
• Support DECIMAL order-by for RANGE window functions (#11645) @mythrocks
• changing version of cmake to 3.23.3 (#11619) @hyperbolic2346
• Generate unique keys table in java JNI contiguousSplitGroups (#11614) @res-life
• Generic type casting to support the new nested JSON reader (#11613) @elstehle
• JSON tree traversal (#11610) @karthikeyann
• Add casting operators to masked UDFs (#11578) @brandon-b-miller
• Adds type inference and type conversion for leaf-columns to the nested JSON parser (#11574) @elstehle
• Add strings 'like' function (#11558) @davidwendt
• Handle hyphen as literal for regex cclass when incomplete range (#11557) @davidwendt
• Enable ZSTD compression in ORC and Parquet writers (#11551) @vuule
• Adds support for json lines format to the nested JSON reader (#11534) @elstehle
• Adding optional parquet reader schema (#11524) @hyperbolic2346
• Adds GPU implementation of JSON-token-stream to JSON-tree (#11518) @karthikeyann
• Add gdb pretty-printers for simple types (#11499) @upsj
• Add create_random_column function to the data generator (#11490) @vuule
• Add fluent API builder to data_profile (#11479) @vuule
• Adds Nested Json benchmark (#11466) @karthikeyann
• Convert thrust::optional usages to std::optional (#11455) @robertmaynard
• Python API for the future experimental JSON reader (#11426) @vuule
• Return schema info from JSON reader (#11419) @vuule
• Add regex ASCII flag support for matching builtin character classes (#11404) @davidwendt
• Truncate parquet column indexes (#11403) @etseidl
• Adds the end-to-end JSON parser implementation (#11388) @elstehle
• Use the new JSON parser when the experimental reader is selected (#11364) @vuule
• Add placeholder for the experimental JSON reader (#11334) @vuule
• Add read-only functions on string dtypes to DataFrame.apply and Series.apply (#11319) @brandon-b-miller
• Added 'crosstab' and 'pivot_table' features (#11314) @shaswat-indian
• Quickly error out when trying to build with unsupported nvcc versions (#11297) @robertmaynard
• Adds JSON tokenizer (#11264) @elstehle
• List lexicographic comparator (#11129) @devavret
• Add generic type inference for cuIO (#11121) @PointKernel
• Fully support nested types in cudf::contains (#10656) @ttnghia
• Support nested types in lists::contains (#10548) @ttnghia

🛠️ Improvements

• Pin dask and distributed for release (#11822) @galipremsagar
• Add examples for Nested JSON reader (#11814) @GregoryKimball
• Support shuffle-based groupby aggregations in dask_cudf (#11800) @rjzamora
• Update strings udf version updater script (#11772) @galipremsagar
• Remove kwargs in read_csv & to_csv (#11762) @galipremsagar
• Pass dtype param to avoid pd.Series warnings (#11761) @galipremsagar
• Enable schema_element & keep_quotes support in json reader (#11746) @galipremsagar
• Add ability to construct ListColumn when size is None (#11745) @galipremsagar
• Reduces memory requirements in JSON parser and adds bytes/s and peak memory usage to benchmarks (#11732) @elstehle
• Add missing copyright headers. (#11712) @bdice
• Fix copyright check issues in pre-commit (#11711) @bdice
• Include decimal in supported types for range window order-by columns (#11710) @mythrocks
• Disable very large column gtest for contiguous-split (#11706) @davidwendt
• Drop split_out=None test from groupby.agg (#11704) @wence-
• Use CubinLinker for CUDA Minor Version Compatibility (#11701) @gmarkall
• Add regex capture-group parameter to auto convert to non-capture groups (#11695) @davidwendt
• Add a __dataframe__ method to the protocol dataframe object (#11692) @rgommers
• Special-case multibyte_split for single-byte delimiter (#11681) @upsj
• Remove isort exclusions (#11680) @bdice
• Refactor CSV reader benchmarks with nvbench (#11678) @PointKernel
• Check conda recipe headers with pre-commit (#11669) @bdice
• Remove redundant style check for clang-format. (#11668) @bdice
• Add support for group_keys in groupby (#11659) @galipremsagar
• Fix pandoc pinning. (#11658) @bdice
• Revert removal of skip_rows / num_rows options from the Parquet reader. (#11657) @nvdbaranec
• Update git metadata (#11647) @bdice
• Call set_null_count on a returning column if null-count is known (#11646) @davidwendt
• Fix some libcudf detail calls not passing the stream variable (#11642) @davidwendt
• Update to mypy 0.971 (#11640) @wence-
• Refactor strings strip functor to details header (#11635) @davidwendt
• Fix incorrect nullCount in get_json_object (#11633) @trxcllnt
• Simplify hostdevice_vector (#11631) @upsj
• Refactor parquet writer benchmarks with nvbench (#11623) @PointKernel
• Rework contains_scalar to check nulls at runtime (#11622) @davidwendt
• Fix incorrect memory resource used in rolling temp columns (#11618) @mythrocks
• Upgrade pandas to 1.5 (#11617) @galipremsagar
• Move type-dispatcher calls from traits.hpp to traits.cpp (#11616) @davidwendt
• Refactor parquet reader benchmarks with nvbench (#11611) @PointKernel
• Forward-merge branch-22.08 to branch-22.10 (#11608) @bdice
• Use stream in Java API. (#11601) @bdice
• Refactors of public/detail APIs, CUDF_FUNC_RANGE, stream handling. (#11600) @bdice
• Improve ORC writer benchmark with nvbench (#11598) @PointKernel
• Tune multibyte_split kernel (#11587) @upsj
• Move split_utils.cuh to strings/detail (#11585) @davidwendt
• Fix warnings due to compiler regression with if constexpr (#11581) @ttnghia
• Add full 24-bit dictionary support to Parquet writer (#11580) @etseidl
• Expose "explicit-comms" option in shuffle-based dask_cudf functions (#11576) @rjzamora
• Move cudf::strings::findall_record to cudf::strings::findall (#11575) @davidwendt
• Refactor dask_cudf groupby to use apply_concat_apply (#11571) @rjzamora
• Add ability to write list(struct) columns as map type in orc writer (#11568) @galipremsagar
• Add byte_range to multibyte_split benchmark + NVBench refactor (#11562) @upsj
• JNI support for writing binary columns in parquet (#11556) @revans2
• Support additional dictionary bit widths in Parquet writer (#11547) @etseidl
• Refactor string/numeric conversion utilities (#11545) @davidwendt
• Removing unnecessary asserts in parquet tests (#11544) @hyperbolic2346
• Clean up ORC reader benchmarks with NVBench (#11543) @PointKernel
• Reuse MurmurHash3_32 in Parquet page data. (#11528) @bdice
• Add hexadecimal value separators (#11527) @bdice
• Deprecate skiprows and num_rows in read_orc (#11522) @galipremsagar
• Struct support for NULL_EQUALS binary operation (#11520) @rwlee
• Bump hadoop-common from 3.2.3 to 3.2.4 in /java (#11516) @dependabot[bot]
• Fix Feather test warning. (#11511) @bdice
• copy_range ballot_syncs to have no execution dependency (#11508) @robertmaynard
• Upgrade to arrow-9.x (#11507) @galipremsagar
• Remove support for skip_rows / num_rows options in the parquet reader. (#11503) @nvdbaranec
• Single-pass multibyte_split (#11500) @upsj
• Sanitize percentile_approx() output for empty input (#11498) @SrikarVanavasam
• Unpin dask and distributed for development (#11492) @galipremsagar
• Move SparkMurmurHash3_32 functor. (#11489) @bdice
• Refactor group_nunique.cu to use nullate::DYNAMIC for reduce-by-key functor (#11482) @davidwendt
• Drop support for skiprows and num_rows in cudf.read_parquet (#11480) @galipremsagar
• Add reduction distinct_count benchmark (#11473) @ttnghia
• Add groupby nunique aggregation benchmark (#11472) @ttnghia
• Disable Arrow S3 support by default. (#11470) @bdice
• Add groupby max aggregation benchmark (#11464) @ttnghia
• Extract Dremel encoding code from Parquet (#11461) @vyasr
• Add missing Thrust #includes. (#11457) @bdice
• Make CMake hooks verbose (#11456) @vyasr
• Control Parquet page size through Python API (#11454) @etseidl
• Add control of Parquet column index creation to python (#11453) @etseidl
• Remove unused is_struct trait. (#11450) @bdice
• Refactor the Buffer class (#11447) @madsbk
• Refactor pad_side and strip_type enums into side_type enum (#11438) @davidwendt
• Update to Thrust 1.17.0 (#11437) @bdice
• Add in JNI for parsing JSON data and getting the metadata back too. (#11431) @revans2
• Convert byte_array_view to use std::byte (#11424) @hyperbolic2346
• Deprecate unflatten_nested_columns (#11421) @SrikarVanavasam
• Remove HASH_SERIAL_MURMUR3 / serial32BitMurmurHash3 (#11383) @bdice
• Add Spark list hashing Java tests (#11379) @bdice
• Move cmake to the build section. (#11376) @vyasr
• Remove use of CUDA driver API calls from libcudf (#11370) @shwina
• Add column constructor from device_uvector&& (#11356) @SrikarVanavasam
• Remove unused custreamz thirdparty directory (#11343) @vyasr
• Update jni version to 22.10.0-SNAPSHOT (#11338) @pxLi
• Enable using upstream jitify2 (#11287) @shwina
• Cache cudf.Scalar (#11246) @shwina
• Remove deprecated Series.applymap. (#11031) @bdice
• Remove deprecated expand parameter from str.findall. (#11030) @bdice