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• 2026/01/03 Re: [I] [C#] Write no IPC buffer metadata for NullType [arrow] via GitHub
• 2026/01/03 Re: [I] [C++] [Parquet] Refactor encoding/decoding APIs for clarity [arrow] via GitHub
• 2026/01/03 Re: [I] [C++] Remove "python" from conda_env_cpp.txt [arrow] via GitHub
• 2026/01/03 Re: [I] [Developer] Tracking issue: use strings for 64-bit int64 and uint64 in integration test JSON format [arrow] via GitHub
• 2026/01/03 Re: [I] [Format][C++]Support the format of a COO sparse matrix that has separated row and column indices [arrow] via GitHub
• 2026/01/03 Re: [I] [C++] Add ExtensionType::ValidateArray for custom validation? [arrow] via GitHub
• 2026/01/03 Re: [I] [C++][Parquet] Use arrow::Buffer for buffered dictionary indices in DictEncoder instead of std::vector [arrow] via GitHub
• 2026/01/03 Re: [I] [C++] Consolidate thirdparty bundle URLs, version bumping logic, etc [arrow] via GitHub
• 2026/01/03 Re: [I] [Python][Flight] Add Python documentation / tutorial for Flight [arrow] via GitHub
• 2026/01/02 Re: [I] [C++][FlightRPC] Document StatementAttributeId enum values in ODBC SPI [arrow] via GitHub
• 2026/01/02 [I] `ADBC_INFO_DRIVER_ARROW_VERSION` is useful? [arrow-adbc] via GitHub
• 2026/01/02 Re: [I] [Ruby] Add support for reading dictionary array [arrow] via GitHub
• 2026/01/02 Re: [I] [Ruby] Type inference bug: list element type stays int8 for large integers in nested arrays [arrow] via GitHub
• 2026/01/02 [I] [C++][FlightRPC][MSVC] Potential deadlock error after C++ 20 requirement is enabled [arrow] via GitHub
• 2026/01/02 [I] Improved Error Reporting [arrow-adbc] via GitHub
• 2026/01/02 [I] [R] "Invalid metadata$r" warning [arrow] via GitHub
• 2026/01/02 [I] [Python][Types] Type stub improvements for better coverage with Arrow IPC and compute operations [arrow] via GitHub
• 2026/01/02 [I] python: add oauth options [arrow-adbc] via GitHub
• 2026/01/02 Re: [I] [C++][Parquet] Factor out data/dictionary page writes to allow for page buffering [arrow] via GitHub
• 2026/01/02 Re: [I] [C++] Add context lines to Diff formatting [arrow] via GitHub
• 2026/01/02 Re: [I] [C++] refactor Diff and PrettyPrint to share code [arrow] via GitHub
• 2026/01/02 Re: [I] [C++][Parquet] Support direct dictionary decoding of types other than BYTE_ARRAY [arrow] via GitHub
• 2026/01/02 Re: [I] [C++] Refactor arrow/io/hdfs.h to use common FileSystem API [arrow] via GitHub
• 2026/01/02 Re: [I] [C++] Optimize the Arrow UTF-8-string-validation [arrow] via GitHub
• 2026/01/02 Re: [I] [C++] Provide an initialization and/or compatibility check function [arrow] via GitHub
• 2026/01/01 Re: [I] [Ruby] Add support for reading decimal256 array [arrow] via GitHub
• 2026/01/01 [I] [C++][FlightRPC] Use IRD precision/scale defaults with ARD override in SQLGetData [arrow] via GitHub
• 2026/01/01 Re: [I] [PYTHON] Incorrect result when building `TimestampArray` by `pa.array([datetime.datetime])` [arrow] via GitHub
• 2026/01/01 Re: [I] [GLib][Ruby] Missing SplitOptions [arrow] via GitHub
• 2026/01/01 Re: [I] [GLib][Ruby] Missing ZeroFillOptions [arrow] via GitHub
• 2026/01/01 Re: [I] [GLib][Ruby] Missing WinsorizeOptions [arrow] via GitHub
• 2026/01/01 Re: [I] [Python] support conversion to decimal type from floats? [arrow] via GitHub
• 2026/01/01 Re: [I] [C++][Parquet] Reuse arrow::Buffer used as scratch space for decryption in Thrift deserialization hot path [arrow] via GitHub
• 2026/01/01 Re: [I] [C++] Provide method on AdaptiveIntBuilder for appending integer Array types [arrow] via GitHub
• 2026/01/01 Re: [I] [C++] Provide bulk method on TypedBufferBuilder<bool> for appending a bitmap [arrow] via GitHub
• 2026/01/01 Re: [I] [C++] Extend extension types facility to provide for serialization and deserialization in IPC roundtrips [arrow] via GitHub
• 2026/01/01 Re: [I] [GLib][Ruby] Missing WeekOptions [arrow] via GitHub
• 2025/12/31 [I] [Ruby] Add support for reading dictionary array [arrow] via GitHub
• 2025/12/31 Re: [I] [GLib][Ruby] Missing TrimOptions [arrow] via GitHub
• 2025/12/31 Re: [I] [GLib][Ruby] Missing TDigestOptions [arrow] via GitHub
• 2025/12/31 Re: [I] [GLib][Ruby] Missing SliceOptions [arrow] via GitHub
• 2025/12/31 [I] [Ruby] Add support for reading decimal256 array [arrow] via GitHub
• 2025/12/31 Re: [I] [GLib][Ruby] Missing CSV writer [arrow] via GitHub
• 2025/12/31 Re: [I] [GLib][Ruby] Missing SkewOptions [arrow] via GitHub
• 2025/12/31 Re: [I] [GLib][Ruby] Missing SelectKOptions [arrow] via GitHub
• 2025/12/31 Re: [I] [Go][Parquet] slice bounds out of range - panic in writeDenseArrow [arrow-go] via GitHub
• 2025/12/31 [I] [Go][Parquet] slice bounds out of range - panic in writeDenseArrow [arrow-go] via GitHub
• 2025/12/31 Re: [I] [GLib][Ruby] Missing RoundTemporalOptions [arrow] via GitHub
• 2025/12/31 Re: [I] [C++] Update MakeListArray to use ListArray::FromArrays instead of constructor [arrow] via GitHub
• 2025/12/31 Re: [I] [GLib][Ruby] Missing RoundBinaryOptions [arrow] via GitHub
• 2025/12/31 [I] [ALP][Parquet] Add C++ implementation of ALPpd encoder/decoder [arrow] via GitHub
• 2025/12/31 Re: [I] [GLib][Ruby] Missing ReplaceSubstringOptions [arrow] via GitHub
• 2025/12/31 Re: [I] [C++] Remove BuilderPtrs from json parser [arrow] via GitHub
• 2025/12/31 Re: [I] [R] Converter should be able to ingest part of an Array [arrow] via GitHub
• 2025/12/31 Re: [I] [Python] Overhaul type unification from Python sequence in arrow::py::InferArrowType [arrow] via GitHub
• 2025/12/31 Re: [I] [C++] implement partial schema class to extend JSON conversion [arrow] via GitHub
• 2025/12/31 Re: [I] [C++][Docs] Summarize function argument type guidelines in developers/cpp.rst [arrow] via GitHub
• 2025/12/31 Re: [I] [C++] Add options to ValueCount/Unique/DictEncode kernel to toggle null behavior [arrow] via GitHub
• 2025/12/31 Re: [I] [GLib][Ruby] Missing RankQuantileOptions [arrow] via GitHub
• 2025/12/31 Re: [I] [GLib][Ruby] Missing PivotWiderOptions [arrow] via GitHub
• 2025/12/30 Re: [I] [GLib][Ruby] Missing PartitionNthOptions [arrow] via GitHub
• 2025/12/30 Re: [I] [Ruby] Add support for reading decimal128 array [arrow] via GitHub
• 2025/12/30 [I] [Format] Clarify calling get_next after error in C stream interface [arrow] via GitHub
• 2025/12/30 [I] A standard field/column description in metadata [arrow] via GitHub
• 2025/12/30 [I] [Python] Pyarrow csv reader : ability to specify a max number of rows to read [arrow] via GitHub
• 2025/12/30 Re: [I] [C++] Improvement for IsIn Kernel when right array is small [arrow] via GitHub
• 2025/12/30 Re: [I] [Python] automatic type inference for arrays of tuples [arrow] via GitHub
• 2025/12/30 Re: [I] [Format][Integration] Define how to test for delta dictionary support in the JSON integration test data format [arrow] via GitHub
• 2025/12/30 Re: [I] [Python][C++] Improved error messages when user erroneously uses a non-local resource URI to open a file [arrow] via GitHub
• 2025/12/30 Re: [I] [Format] Script for updating various checked-in Flatbuffers files [arrow] via GitHub
• 2025/12/30 Re: [I] [C++] JSON table writer [arrow] via GitHub
• 2025/12/30 Re: [I] [Flight] Test for cross-version Flight compatibility [arrow] via GitHub
• 2025/12/30 Re: [I] [GLib][Ruby] Missing ReplaceSliceOptions [arrow] via GitHub
• 2025/12/30 Re: [I] [C++][CI] Resolve push to nuget timeout issue by adding timeout option [arrow] via GitHub
• 2025/12/29 [I] [C++] Write serializer could be crash if the value buffer is empty [arrow] via GitHub
• 2025/12/29 [I] [R] Make "Can read Parquet files from a URL" less flaky [arrow] via GitHub
• 2025/12/29 [I] [C++] [arrow] via GitHub
• 2025/12/29 [I] [C++] Remove IPC dependency from array_union_test.cc by moving MakeUnion to testing utilities [arrow] via GitHub
• 2025/12/29 Re: [I] [C++] SQLGetTypeInfo implementation [arrow] via GitHub
• 2025/12/29 Re: [I] [C++] SQLGetFunctions tests [arrow] via GitHub
• 2025/12/29 Re: [I] [C++] SQLColAttribute implementation [arrow] via GitHub
• 2025/12/29 [I] [GLib][Ruby] Missing CSV writer [arrow] via GitHub
• 2025/12/29 [I] [C++][Python] Incorrect results from `hash_pivot_wider` [arrow] via GitHub
• 2025/12/29 [I] pyright type error when hinting pyarrow.compute functions as Callable[[ChunkedArray[Any]], ChunkedArray[Any]] [arrow] via GitHub
• 2025/12/29 Re: [I] [Packaging] Distribute in Debian Repo [arrow] via GitHub
• 2025/12/29 Re: [I] [Flight] Test Flight servers and clients with a generic gRPC services [arrow] via GitHub
• 2025/12/29 Re: [I] [C++][Parquet] Disable LZ4 codec [arrow] via GitHub
• 2025/12/29 Re: [I] [Python] Should RecordBatchStreamReader/Writer be AsyncIterable? [arrow] via GitHub
• 2025/12/29 [I] [C++][FlightRPC] Document StatementAttributeId enum values in ODBC SPI [arrow] via GitHub
• 2025/12/29 [I] [GO] parquet: dict spaced eof exception [arrow-go] via GitHub
• 2025/12/29 [I] [C++] Fix ToStringWithoutContextLines to check for :\d+ pattern before removing lines [arrow] via GitHub
• 2025/12/29 Re: [I] [Java] DenseUnionWriter#setPosition fails with NullPointerException [arrow-java] via GitHub
• 2025/12/28 Re: [I] [Python][Compute] Add python wrappers for scatter, inverse_permutation [arrow] via GitHub
• 2025/12/28 [I] c/driver/postgresql: Implement COPY Writer support for time (ms, ns, s) types [arrow-adbc] via GitHub
• 2025/12/28 [I] rust driver_manager: initializing the driver creates some dangling resources which hangs application during shutdown [arrow-adbc] via GitHub
• 2025/12/28 [I] [Python] Add a switch for truncating intraday milliseconds in Date64 in Python conversion [arrow] via GitHub
• 2025/12/28 Re: [I] [C++] SQLExtendedFetch implementation [arrow] via GitHub
• 2025/12/28 [I] c/driver/postgresql: Implement constraint metadata in GetObjects [arrow-adbc] via GitHub
• 2025/12/28 [I] c/driver/postgresql: Support bulk ingest to temporary tables [arrow-adbc] via GitHub
• 2025/12/28 [I] [FlightRPC] Remove sketchy gRPC reflection code [arrow-java] via GitHub
• 2025/12/28 [I] ParquetDataset filtering on hive partitionned datasets accesses unrelated directories and files [arrow] via GitHub
• 2025/12/28 Re: [I] [C++] Implement support for using selection vectors in scalar aggregate function kernels [arrow] via GitHub
• 2025/12/28 Re: [I] [C++] Implement safe Make constructor [arrow] via GitHub
• 2025/12/28 Re: [I] [C++] shared conversion framework for JSON/CSV parsers [arrow] via GitHub
• 2025/12/28 Re: [I] [Benchmarking] Add portable machine and benchmark context detection [arrow] via GitHub
• 2025/12/28 Re: [I] [Python] Remove backward compatibility hacks from pyarrow.pandas_compat [arrow] via GitHub
• 2025/12/28 Re: [I] [C++] Improve buffer symbolic index [arrow] via GitHub
• 2025/12/28 Re: [I] [C++] Improve C++ Orc Adapter performance and memory footprint [arrow] via GitHub
• 2025/12/27 Re: [I] [C++] run-cmake-format.py is not supported on Windows [arrow] via GitHub
• 2025/12/27 Re: [I] [C++][Parquet] Denominate row group size in bytes (not in no of rows) [arrow] via GitHub
• 2025/12/27 Re: [I] [C++] Let StringBuilder be constructible with a pre allocated buffer for character data [arrow] via GitHub
• 2025/12/27 Re: [I] [Packaging] Distribute in Fedora Repo [arrow] via GitHub
• 2025/12/27 Re: [I] [C++] Support GCP BigQuery Storage API [arrow] via GitHub
• 2025/12/27 Re: [I] [Gandiva] Enable timestamp tests on windows platform [arrow] via GitHub
• 2025/12/27 Re: [I] [C++, lint] Use clang-format more efficiently in `check-format` target [arrow] via GitHub
• 2025/12/27 Re: [I] [C++] Consolidate random string generators for use in benchmarks and unittests [arrow] via GitHub
• 2025/12/27 Re: [I] [C++] Merge parquet/util/test-common.h into common arrow/testing directory [arrow] via GitHub
• 2025/12/26 [I] Add code examples for compute function min/max/min_max [arrow] via GitHub
• 2025/12/26 [I] [PYTHON] There are some unused imports in `python/pyarrow/__init__.py` [arrow] via GitHub
• 2025/12/26 Re: [I] [C++/Python] Human readable arrow schema comparison [arrow] via GitHub
• 2025/12/26 Re: [I] [C++] Extend visitor functions to include ArrayBuilder and allow callable visitors [arrow] via GitHub
• 2025/12/26 Re: [I] [Python] When converting from Pandas, coerce mixed columns to String [arrow] via GitHub
• 2025/12/26 Re: [I] [Python] Pretty printing very large ChunkedArray objects can use unbounded memory [arrow] via GitHub
• 2025/12/26 Re: [I] [C++] Add function to "conform" a dictionary array to a target new dictionary [arrow] via GitHub
• 2025/12/26 Re: [I] [C++][Python] Table.flatten() doesn't work recursively [arrow] via GitHub
• 2025/12/26 Re: [I] [C++] Preserve "ordered" metadata in some special cases in dictionary unification [arrow] via GitHub
• 2025/12/25 Re: [I] Building ADBC and flightsql driver on Windows [arrow-adbc] via GitHub
• 2025/12/25 [I] [R] Implement support for keepNA = FALSE in base::nchar() [arrow] via GitHub
• 2025/12/25 [I] [R] Remove `trace$calls %||% trace$call` once rlang > 0.4.11 is released [arrow] via GitHub
• 2025/12/25 [I] [R] Add tests for filter() and arrange() with aggregation expressions [arrow] via GitHub
• 2025/12/25 [I] [R] Add test for slice_sample with prop = 1 edge case [arrow] via GitHub
• 2025/12/25 [I] [Python] Test timestamp from int without pandas dependency [arrow] via GitHub
• 2025/12/25 [I] c/driver_manager: support vendoring somehow [arrow-adbc] via GitHub
• 2025/12/25 Re: [I] [C++] RFC: standardize ArrayBuilder subclasses [arrow] via GitHub
• 2025/12/25 Re: [I] [C++] Implement hashing, dictionary-encoding for StructArray [arrow] via GitHub
• 2025/12/25 Re: [I] [Python] Revamp handling of file URIs in pyarrow.parquet [arrow] via GitHub
• 2025/12/25 Re: [I] [Python] Create Parquet Schema in python [arrow] via GitHub
• 2025/12/24 [I] Why StructBuilder::AppendNull() appends empty value to each child? [arrow] via GitHub
• 2025/12/24 [I] [PYTHON] Some PIC functions are not documented in API reference [arrow] via GitHub
• 2025/12/24 [I] [Ruby] Add support for reading decimal128 array [arrow] via GitHub
• 2025/12/24 Re: [I] [GLib][Ruby] Missing PairwiseOptions [arrow] via GitHub
• 2025/12/24 Re: [I] [GLib][Ruby] Missing PadOptions [arrow] via GitHub
• 2025/12/24 Re: [I] [GLib][Ruby] Missing NullOptions [arrow] via GitHub
• 2025/12/24 Re: [I] [GLib][Ruby] Missing ModeOptions [arrow] via GitHub
• 2025/12/24 Re: [I] [Python] Provide Python API to ArrayBuilder classes [arrow] via GitHub
• 2025/12/24 Re: [I] [Python] When converting nested types to pandas, use tuples [arrow] via GitHub
• 2025/12/24 Re: [I] [Python] Try to cast or normalize schemas when writing a table to ParquetWriter [arrow] via GitHub
• 2025/12/24 Re: [I] [Python] query distinct values of a given partition from a ParquetDataset [arrow] via GitHub
• 2025/12/24 Re: [I] [Python] Output a representation of pyarrow.Schema that can be used to reconstruct a schema in a script [arrow] via GitHub
• 2025/12/24 Re: [I] [Python] Expose Python API for start and end offset of row group in parquet file [arrow] via GitHub
• 2025/12/24 Re: [I] [Gandiva] Improve `make_in_expression` [arrow] via GitHub
• 2025/12/24 Re: [I] [Packaging] Use CircleCI for conda builds on linux [arrow] via GitHub
• 2025/12/24 Re: [I] [Python] Add "nrows" argument to parquet.read_table read indicated number of rows from file instead of whole file [arrow] via GitHub
• 2025/12/24 Re: [I] [Packaging] Substitute deb package names via crossbow [arrow] via GitHub
• 2025/12/24 [I] [CI] Multiple nightly R builds failing due to ssache errors [arrow] via GitHub
• 2025/12/23 Re: [I] [GLib][Ruby] Missing ListSliceOptions [arrow] via GitHub
• 2025/12/23 [I] [C++][FlightSQL][ODBC] Potential deadlock error after C++ 20 requirement is enabled [arrow] via GitHub
• 2025/12/23 Re: [I] [CI][Benchmarking] Switch to new conbench instance [arrow-go] via GitHub
• 2025/12/23 [I] Enable multi-threaded reads of struct-list stored data in parquet files [arrow] via GitHub
• 2025/12/23 Re: [I] [Python] Remove deprecated Array.format [arrow] via GitHub
• 2025/12/23 Re: [I] [C++] Implement regex/multichar delimiter tokenizer [arrow] via GitHub
• 2025/12/23 Re: [I] [Python] Implement pa.RecordBatch.serialize_to to write single message to an OutputStream [arrow] via GitHub
• 2025/12/23 Re: [I] [Gandiva] Add a string based expression parser [arrow] via GitHub
• 2025/12/23 Re: [I] [C++] Pluggable statistics collector API for unconvertible CSV values [arrow] via GitHub
• 2025/12/23 Re: [I] [C++][Dataset] Automatically detect boolean partition columns [arrow] via GitHub
• 2025/12/23 Re: [I] [C++] Specify expected behavior of table concatenation, creating table from multiple record batches, if schema metadata is unequal [arrow] via GitHub
• 2025/12/23 Re: [I] [C++] Implement whitespace CSV tokenizer [arrow] via GitHub
• 2025/12/23 [I] [C++] Why is arrow mmap marked MAP_PRIVATE (during read)? [arrow] via GitHub
• 2025/12/23 [I] Rust & Adbc RecordBatchReader behviour [arrow-adbc] via GitHub
• 2025/12/22 [I] [R] Add NEWS.md entry for 22.0.0.1 [arrow] via GitHub
• 2025/12/22 [I] [R] Non-API calls: 'ATTRIB', 'SET_ATTRIB' [arrow] via GitHub
• 2025/12/22 [I] c: don't require ADBC_BUILD_VCPKG [arrow-adbc] via GitHub
• 2025/12/22 [I] [CI] Use same version of vcpkg in Windows and other CI [arrow-adbc] via GitHub
• 2025/12/22 [I] [R] Add test coverage for joins with duplicate columns and type casting [arrow] via GitHub
• 2025/12/22 [I] [Python] Add PyDecimal_Check(pythopn_decimal) as a ARROW_DCHECK [arrow] via GitHub
• 2025/12/22 Re: [I] Could we have also Wheels for Python-3.14t on windows 64 bit ? on pypi ? [arrow-adbc] via GitHub
• 2025/12/22 [I] [Dev] Add free-threaded wheels to release verification [arrow-adbc] via GitHub
• 2025/12/22 [I] [Python] Add temporal unit checking in NumPyDtypeUnifier [arrow] via GitHub
• 2025/12/22 Re: [I] [Python] Unable to import arrow table to pandas if it has categorical columns with index types of unsigned ints [arrow] via GitHub
• 2025/12/22 Re: [I] [GLib] Use `Arrow-${MAJOR}.${MINOR}.typelib` not `Arrow-1.0.typelib` [arrow] via GitHub
• 2025/12/22 [I] [CI][Dev] Add missing headers to nightly email reports [arrow] via GitHub
• 2025/12/22 [I] [R] CRAN packaging checklist for version 22.0.0.1 [arrow] via GitHub
• 2025/12/21 Re: [I] [Ruby] Add support for reading streaming format [arrow] via GitHub
• 2025/12/21 Re: [I] [GLib][Ruby] Missing MapLookupOptions [arrow] via GitHub
• 2025/12/21 [I] Could we have also Wheels for Python-3.14t on windows 64 bit ? on pypi ? [arrow-adbc] via GitHub
• 2025/12/21 Re: [I] [C++][Parquet] Add tests for C++ tools [arrow] via GitHub
• 2025/12/21 Re: [I] [Python] Support spark parquet array and map types [arrow] via GitHub
• 2025/12/21 Re: [I] [R] Use R sentinel values for missingness in addition to bitmask [arrow] via GitHub
• 2025/12/21 Re: [I] [C++] Utilize zero-copy protobuf parsing from upstream whenever it becomes available [arrow] via GitHub
• 2025/12/21 Re: [I] [C++][Parquet] Deprecate parquet/api/* in favor of simpler public API "parquet/api.h" [arrow] via GitHub
• 2025/12/21 Re: [I] [C++] Address libparquet SO version convention in unified build [arrow] via GitHub
• 2025/12/21 Re: [I] [C++] Parallelize execution of ScalarAggregateFunction [arrow] via GitHub
• 2025/12/21 Re: [I] [Python] Infer index and/or filtering from parquet column statistics [arrow] via GitHub
• 2025/12/21 Re: [I] [Python] Support seek(...) on writable files that support it [arrow] via GitHub
• 2025/12/21 Re: [I] [Python] Move all the test data files to apache/arrow-testing [arrow] via GitHub
• 2025/12/21 [I] [GLib] Use `Arrow-${MAJOR}.${MINOR}.typelib` not `Arrow-1.0.typelib` [arrow] via GitHub
• 2025/12/20 Re: [I] ci: add musl builds to the nightly-verify workflow [arrow-adbc] via GitHub
• 2025/12/20 [I] [R] `ATTRIB` will be removed [arrow-nanoarrow] via GitHub
• 2025/12/20 [I] [Ruby] Add support for reading streaming format [arrow] via GitHub
• 2025/12/20 Re: [I] [Ruby] Cannot create FixedSizeListArray objects directly [arrow] via GitHub

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