CHANGELOG.md

Apache Arrow 0.4.1 (9 June 2017)

Bug

• ARROW-1039 - Python: pyarrow.Filesystem.read_parquet causing error if nthreads>1
• ARROW-1050 - [C++] Export arrow::ValidateArray
• ARROW-1051 - [Python] If pyarrow.parquet fails to import due to a shared library ABI conflict, the test_parquet.py tests silently do not run
• ARROW-1056 - [Python] Parquet+HDFS test failure due to writing pandas index
• ARROW-1057 - Fix cmake warning and msvc debug asserts
• ARROW-1062 - [GLib] Examples use old API
• ARROW-1066 - remove warning on feather for pandas >= 0.20.1
• ARROW-1070 - [C++] Feather files for date/time types should be written with the physical types
• ARROW-1075 - [GLib] Build error on macOS
• ARROW-1085 - [java] Follow up on template cleanup. Missing method for IntervalYear
• ARROW-1086 - [Python] pyarrow 0.4.0 on pypi is missing pxd files
• ARROW-1088 - [Python] test_unicode_filename test fails when unicode filenames aren't supported by system
• ARROW-1090 - [Python] build_ext usability
• ARROW-1091 - Decimal scale and precision are flipped
• ARROW-1092 - More Decimal and scale flipped follow-up
• ARROW-1094 - [C++] Incomplete buffer reads in arrow::io::ReadableFile should exactly truncate returned buffer
• ARROW-424 - [C++] Threadsafety in arrow/io/hdfs.h

Improvement

• ARROW-1020 - [Format] Add additional language to Schema.fbs to clarify naive vs. localized Timestamp values
• ARROW-1034 - [Python] Enable creation of binary wheels on Windows / MSVC
• ARROW-1049 - [java] vector template cleanup
• ARROW-1063 - [Website] Blog post and website updates for 0.4.0 release
• ARROW-1078 - [Python] Account for PARQUET-967
• ARROW-1080 - C++: Add tutorial about converting to/from row-wise representation
• ARROW-897 - [GLib] Build arrow-glib as a separate build in the Travis CI build matrix
• ARROW-986 - [Format] Update IPC.md to account for dictionary batches
• ARROW-990 - [JS] Add tslint support for linting TypeScript

Task

• ARROW-1068 - [Python] Create external repo with appveyor.yml configured for building Python wheel installers
• ARROW-1069 - Add instructions for publishing maven artifacts
• ARROW-1084 - Implementations of BufferAllocator should handle Netty's OutOfDirectMemoryError

Test

• ARROW-1060 - [Python] Add unit test for ARROW-1053
• ARROW-1082 - [GLib] Add CI on macOS

Apache Arrow 0.4.0 (22 May 2017)

Bug

• ARROW-1003 - [C++] Hdfs and java dlls fail to load when built for Windows with MSVC
• ARROW-1004 - ArrowInvalid: Invalid: Python object of type float is not None and is not a string, bool, or date object
• ARROW-1017 - Python: Table.to_pandas leaks memory
• ARROW-1023 - Python: Fix bundling of arrow-cpp for macOS
• ARROW-1033 - [Python] pytest discovers scripts/test_leak.py
• ARROW-1046 - [Python] Conform DataFrame metadata to pandas spec
• ARROW-1053 - [Python] Memory leak with RecordBatchFileReader
• ARROW-1054 - [Python] Test suite fails on pandas 0.19.2
• ARROW-1061 - [C++] Harden decimal parsing against invalid strings
• ARROW-1064 - ModuleNotFoundError: No module named 'pyarrow._parquet'
• ARROW-813 - [Python] setup.py sdist must also bundle dependent cmake modules
• ARROW-824 - Date and Time Vectors should reflect timezone-less semantics
• ARROW-856 - CmakeError by Unknown compiler.
• ARROW-881 - [Python] Reconstruct Pandas DataFrame indexes using custom_metadata
• ARROW-909 - libjemalloc.so.2: cannot open shared object file:
• ARROW-939 - Fix division by zero for zero-dimensional Tensors
• ARROW-940 - [JS] Generate multiple sets of artifacts
• ARROW-944 - Python: Compat broken for pandas==0.18.1
• ARROW-948 - [GLib] Update C++ header file list
• ARROW-952 - Compilation error on macOS with clang-802.0.42
• ARROW-958 - [Python] Conda build guide still needs ARROW_HOME, PARQUET_HOME
• ARROW-979 - [Python] Fix setuptools_scm version when release tag is not in the master timeline
• ARROW-991 - [Python] PyArray_SimpleNew should not be used with NPY_DATETIME
• ARROW-995 - [Website] 0.3 release announce has a typo in reference
• ARROW-998 - [Doc] File format documents incorrect schema location

Improvement

• ARROW-1000 - [GLib] Move install document to Website
• ARROW-1001 - [GLib] Unify writer files
• ARROW-1002 - [C++] It is not necessary to add padding after the magic header in the FileWriter implementation
• ARROW-1010 - [Website] Only show English posts in /blog/
• ARROW-1016 - Python: Include C++ headers (optionally) in wheels
• ARROW-1022 - [Python] Add nthreads option to Feather read method
• ARROW-1024 - Python: Update build time numpy version to 1.10.1
• ARROW-1025 - [Website] Improve changelog on website
• ARROW-1027 - [Python] Allow negative indexing in fields/columns on pyarrow Table and Schema objects
• ARROW-1028 - [Python] Documentation updates after ARROW-1008
• ARROW-1029 - [Python] Fix --with-parquet build on Windows, add unit tests to Appveyor
• ARROW-1030 - Python: Account for library versioning in parquet-cpp
• ARROW-1037 - [GLib] Follow reader name change
• ARROW-1038 - [GLib] Follow writer name change
• ARROW-1040 - [GLib] Follow tensor IO
• ARROW-182 - [C++] Remove Array::Validate virtual function and make a separate method
• ARROW-376 - Python: Convert non-range Pandas indices (optionally) to Arrow
• ARROW-532 - [Python] Expand pyarrow.parquet documentation for 0.3 release
• ARROW-579 - Python: Provide redistributable pyarrow wheels on OSX
• ARROW-891 - [Python] Expand Windows build instructions to not require looking at separate C++ docs
• ARROW-899 - [Docs] Add CHANGELOG for 0.3.0
• ARROW-901 - [Python] Write FixedSizeBinary to Parquet
• ARROW-913 - [Python] Only link jemalloc to the Cython extension where it's needed
• ARROW-923 - [Docs] Generate Changelog for website with JIRA links
• ARROW-929 - Move KEYS file to SVN, remove from git
• ARROW-943 - [GLib] Support running unit tests with source archive
• ARROW-945 - [GLib] Add a Lua example to show Torch integration
• ARROW-946 - [GLib] Use "new" instead of "open" for constructor name
• ARROW-947 - [Python] Improve execution time of manylinux1 build
• ARROW-953 - Use cmake / curl from conda-forge in CI builds
• ARROW-954 - Make it possible to compile Arrow with header-only boost
• ARROW-961 - [Python] Rename InMemoryOutputStream to BufferOutputStream
• ARROW-970 - [Python] Accidentally calling pyarrow.Table() should not segfault process
• ARROW-982 - [Website] Improve website front copy to highlight serialization efficiency benefits
• ARROW-984 - [GLib] Add Go examples
• ARROW-985 - [GLib] Update package information
• ARROW-988 - [JS] Add entry to Travis CI matrix
• ARROW-993 - [GLib] Add missing error checks in Go examples
• ARROW-996 - [Website] Add 0.3 release announce in Japanese

New Feature

• ARROW-1008 - [C++] Define abstract interface for stream iteration
• ARROW-1011 - [Format] Clarify requirements around buffer padding in validity bitmaps
• ARROW-1014 - 0.4.0 release
• ARROW-1031 - [GLib] Support pretty print
• ARROW-1044 - [GLib] Support Feather
• ARROW-29 - C++: Add re2 as optional 3rd-party toolchain dependency
• ARROW-446 - [Python] Document NativeFile interfaces, HDFS client in Sphinx
• ARROW-482 - [Java] Provide API access to "custom_metadata" Field attribute in IPC setting
• ARROW-596 - [Python] Add convenience function to convert pandas.DataFrame to pyarrow.Buffer containing a file or stream representation
• ARROW-714 - [C++] Add import_pyarrow C API in the style of NumPy for thirdparty C++ users
• ARROW-819 - [Python] Define public Cython API
• ARROW-872 - [JS] Read streaming format
• ARROW-873 - [JS] Implement fixed width list type
• ARROW-874 - [JS] Read dictionary-encoded vectors
• ARROW-963 - [GLib] Add equal
• ARROW-967 - [GLib] Support initializing array with buffer
• ARROW-977 - [java] Add Timezone aware timestamp vectors

Task

• ARROW-1015 - [Java] Implement schema-level metadata
• ARROW-629 - [JS] Add unit test suite
• ARROW-956 - remove pandas pre-0.20.0 compat
• ARROW-957 - [Doc] Add HDFS and Windows documents to doxygen output
• ARROW-997 - [Java] Implement transfer in FixedSizeListVector

Apache Arrow 0.3.0 (5 May 2017)

Bug

• ARROW-109 - [C++] Investigate recursive data types limit in flatbuffers
• ARROW-208 - Add checkstyle policy to java project
• ARROW-347 - Add method to pass CallBack when creating a transfer pair
• ARROW-413 - DATE type is not specified clearly
• ARROW-431 - [Python] Review GIL release and acquisition in to_pandas conversion
• ARROW-443 - [Python] Support for converting from strided pandas data in Table.from_pandas
• ARROW-451 - [C++] Override DataType::Equals for other types with additional metadata
• ARROW-454 - pojo.Field doesn't implement hashCode()
• ARROW-526 - [Format] Update IPC.md to account for File format changes and Streaming format
• ARROW-565 - [C++] Examine "Field::dictionary" member
• ARROW-570 - Determine Java tools JAR location from project metadata
• ARROW-584 - [C++] Fix compiler warnings exposed with -Wconversion
• ARROW-588 - [C++] Fix compiler warnings on 32-bit platforms
• ARROW-595 - [Python] StreamReader.schema returns None
• ARROW-604 - Python: boxed Field instances are missing the reference to DataType
• ARROW-613 - [JS] Implement random-access file format
• ARROW-617 - Time type is not specified clearly
• ARROW-619 - Python: Fix typos in setup.py args and LD_LIBRARY_PATH
• ARROW-623 - segfault with repr of empty Field
• ARROW-624 - [C++] Restore MakePrimitiveArray function
• ARROW-627 - [C++] Compatibility macros for exported extern template class declarations
• ARROW-628 - [Python] Install nomkl metapackage when building parquet-cpp for faster Travis builds
• ARROW-630 - [C++] IPC unloading for BooleanArray does not account for offset
• ARROW-636 - [C++] Add Boost / other system requirements to C++ README
• ARROW-639 - [C++] Invalid offset in slices
• ARROW-642 - [Java] Remove temporary file in java/tools
• ARROW-644 - Python: Cython should be a setup-only requirement
• ARROW-652 - Remove trailing f in merge script output
• ARROW-654 - [C++] Support timezone metadata in file/stream formats
• ARROW-668 - [Python] Convert nanosecond timestamps to pandas.Timestamp when converting from TimestampValue
• ARROW-671 - [GLib] License file isn't installed
• ARROW-673 - [Java] Support additional Time metadata
• ARROW-677 - [java] Fix checkstyle jcl-over-slf4j conflict issue
• ARROW-678 - [GLib] Fix dependenciesfff
• ARROW-680 - [C++] Multiarch support impacts user-supplied install prefix
• ARROW-682 - Add self-validation checks in integration tests
• ARROW-683 - [C++] Support date32 (DateUnit::DAY) in IPC metadata, rename date to date64
• ARROW-686 - [C++] Account for time metadata changes, add time32 and time64 types
• ARROW-689 - [GLib] Install header files and documents to wrong directories
• ARROW-691 - [Java] Encode dictionary Int type in message format
• ARROW-697 - [Java] Raise appropriate exceptions when encountering large (> INT32_MAX) record batches
• ARROW-699 - [C++] Arrow dynamic libraries are missed on run of unit tests on Windows
• ARROW-702 - Fix BitVector.copyFromSafe to reAllocate instead of returning false
• ARROW-703 - Fix issue where setValueCount(0) doesn’t work in the case that we’ve shipped vectors across the wire
• ARROW-704 - Fix bad import caused by conflicting changes
• ARROW-709 - [C++] Restore type comparator for DecimalType
• ARROW-713 - [C++] Fix linking issue with ipc benchmark
• ARROW-715 - Python: Explicit pandas import makes it a hard requirement
• ARROW-716 - error building arrow/python
• ARROW-720 - [java] arrow should not have a dependency on slf4j bridges in compile
• ARROW-723 - Arrow freezes on write if chunk_size=0
• ARROW-726 - [C++] PyBuffer dtor may segfault if constructor passed an object not exporting buffer protocol
• ARROW-732 - Schema comparison bugs in struct and union types
• ARROW-736 - [Python] Mixed-type object DataFrame columns should not silently coerce to an Arrow type by default
• ARROW-738 - [Python] Fix manylinux1 packaging
• ARROW-739 - Parallel build fails non-deterministically.
• ARROW-740 - FileReader fails for large objects
• ARROW-747 - [C++] Fix spurious warning caused by passing dl to add_dependencies
• ARROW-749 - [Python] Delete incomplete binary files when writing fails
• ARROW-753 - [Python] Unit tests in arrow/python fail to link on some OS X platforms
• ARROW-756 - [C++] Do not pass -fPIC when compiling with MSVC
• ARROW-757 - [C++] MSVC build fails on googletest when using NMake
• ARROW-762 - Kerberos Problem with PyArrow
• ARROW-776 - [GLib] Cast type is wrong
• ARROW-777 - [Java] Resolve getObject behavior per changes / discussion in ARROW-729
• ARROW-778 - Modify merge tool to work on Windows
• ARROW-781 - [Python/C++] Increase reference count for base object?
• ARROW-783 - Integration tests fail for length-0 record batch
• ARROW-787 - [GLib] Fix compilation errors caused by ARROW-758
• ARROW-793 - [GLib] Wrong indent
• ARROW-794 - [C++] Check whether data is contiguous in ipc::WriteTensor
• ARROW-797 - [Python] Add updated pyarrow. public API listing in Sphinx docs
• ARROW-800 - [C++] Boost headers being transitively included in pyarrow
• ARROW-805 - listing empty HDFS directory returns an error instead of returning empty list
• ARROW-809 - C++: Writing sliced record batch to IPC writes the entire array
• ARROW-812 - Pip install pyarrow on mac failed.
• ARROW-817 - [C++] Fix incorrect code comment from ARROW-722
• ARROW-821 - [Python] Extra file _table_api.h generated during Python build process
• ARROW-822 - [Python] StreamWriter fails to open with socket as sink
• ARROW-826 - Compilation error on Mac with -DARROW_PYTHON=on
• ARROW-829 - Python: Parquet: Dictionary encoding is deactivated if column-wise compression was selected
• ARROW-830 - Python: jemalloc is not anymore publicly exposed
• ARROW-839 - [C++] Portable alternative to PyDate_to_ms function
• ARROW-847 - C++: BUILD_BYPRODUCTS not specified anymore for gtest
• ARROW-852 - Python: Also set Arrow Library PATHS when detection was done through pkg-config
• ARROW-853 - [Python] It is no longer necessary to modify the RPATH of the Cython extensions on many environments
• ARROW-858 - Remove dependency on boost regex
• ARROW-866 - [Python] Error from file object destructor
• ARROW-867 - [Python] Miscellaneous pyarrow MSVC fixes
• ARROW-875 - Nullable variable length vector fillEmpties() fills an extra value
• ARROW-879 - compat with pandas 0.20.0
• ARROW-882 - [C++] On Windows statically built lib file overwrites lib file of shared build
• ARROW-886 - VariableLengthVectors don't reAlloc offsets
• ARROW-887 - [format] For backward compatibility, new unit fields must have default values matching previous implied unit
• ARROW-888 - BitVector transfer() does not transfer ownership
• ARROW-895 - Nullable variable length vector lastSet not set correctly
• ARROW-900 - [Python] UnboundLocalError in ParquetDatasetPiece
• ARROW-903 - [GLib] Remove a needless "."
• ARROW-914 - [C++/Python] Fix Decimal ToBytes
• ARROW-922 - Allow Flatbuffers and RapidJSON to be used locally on Windows
• ARROW-928 - Update CMAKE script to detect unsupported msvc compilers versions
• ARROW-933 - [Python] arrow_python bindings have debug print statement
• ARROW-934 - [GLib] Glib sources missing from result of 02-source.sh
• ARROW-936 - Fix release README
• ARROW-938 - Fix Apache Rat errors from source release build

Improvement

• ARROW-316 - Finalize Date type
• ARROW-542 - [Java] Implement dictionaries in stream/file encoding
• ARROW-563 - C++: Support non-standard gcc version strings
• ARROW-566 - Python: Deterministic position of libarrow in manylinux1 wheels
• ARROW-569 - [C++] Set version for .pc
• ARROW-577 - [C++] Refactor StreamWriter and FileWriter to have private implementations
• ARROW-580 - C++: Also provide jemalloc_X targets if only a static or shared version is found
• ARROW-582 - [Java] Add Date/Time Support to JSON File
• ARROW-589 - C++: Use system provided shared jemalloc if static is unavailable
• ARROW-593 - [C++] Rename ReadableFileInterface to RandomAccessFile
• ARROW-612 - [Java] Field toString should show nullable flag status
• ARROW-615 - Move ByteArrayReadableSeekableByteChannel to vector.util package
• ARROW-631 - [GLib] Import C API (C++ API wrapper) based on GLib from https://github.com/kou/arrow-glib
• ARROW-646 - Cache miniconda packages
• ARROW-647 - [C++] Don't require Boost static libraries to support CentOS 7
• ARROW-648 - [C++] Support multiarch on Debian
• ARROW-650 - [GLib] Follow eadableFileInterface -> RnadomAccessFile change
• ARROW-651 - [C++] Set shared library version for .deb packages
• ARROW-655 - Implement DecimalArray
• ARROW-662 - [Format] Factor Flatbuffer schema metadata into a Schema.fbs
• ARROW-664 - Make C++ Arrow serialization deterministic
• ARROW-674 - [Java] Support additional Timestamp timezone metadata
• ARROW-675 - [GLib] Update package metadata
• ARROW-676 - [java] move from MinorType to FieldType in ValueVectors to carry all the relevant type bits
• ARROW-679 - [Format] Change RecordBatch and Field length members from int to long
• ARROW-681 - [C++] Build Arrow on Windows with dynamically linked boost
• ARROW-684 - Python: More informative message when parquet-cpp but not parquet-arrow is available
• ARROW-688 - [C++] Use CMAKE_INSTALL_INCLUDEDIR for consistency
• ARROW-690 - Only send JIRA updates to [email protected]
• ARROW-700 - Add headroom interface for allocator.
• ARROW-706 - [GLib] Add package install document
• ARROW-707 - Python: All none-Pandas column should be converted to NullArray
• ARROW-708 - [C++] Some IPC code simplification, perf analysis
• ARROW-712 - [C++] Implement Array::Accept as inline visitor
• ARROW-719 - [GLib] Support prepared source archive release
• ARROW-724 - Add "How to Contribute" section to README
• ARROW-725 - [Format] Constant length list type
• ARROW-727 - [Python] Write memoryview-compatible objects in NativeFile.write with zero copy
• ARROW-728 - [C++/Python] Add arrow::Table function for removing a column
• ARROW-731 - [C++] Add shared library related versions to .pc
• ARROW-741 - [Python] Add Python 3.6 to Travis CI
• ARROW-743 - [C++] Consolidate unit tests for code in array.h
• ARROW-744 - [GLib] Re-add an assertion to garrow_table_new() test
• ARROW-745 - [C++] Allow use of system cpplint
• ARROW-746 - [GLib] Add garrow_array_get_data_type()
• ARROW-751 - [Python] Rename all Cython extensions to "private" status with leading underscore
• ARROW-752 - [Python] Construct pyarrow.DictionaryArray from boxed pyarrow array objects
• ARROW-754 - [GLib] Add garrow_array_is_null()
• ARROW-755 - [GLib] Add garrow_array_get_value_type()
• ARROW-758 - [C++] Fix compiler warnings on MSVC x64
• ARROW-761 - [Python] Add function to compute the total size of tensor payloads, including metadata and padding
• ARROW-763 - C++: Use python-config to find libpythonX.X.dylib
• ARROW-765 - [Python] Make generic ArrowException subclass value error
• ARROW-769 - [GLib] Support building without installed Arrow C++
• ARROW-770 - [C++] Move clang-tidy/format config files back to C++ source tree
• ARROW-774 - [GLib] Remove needless LICENSE.txt copy
• ARROW-775 - [Java] add simple constructors to value vectors
• ARROW-779 - [C++/Python] Raise exception if old metadata encountered
• ARROW-782 - [C++] Change struct to class for objects that meet the criteria in the Google style guide
• ARROW-788 - Possible nondeterminism in Tensor serialization code
• ARROW-795 - [C++] Combine libarrow/libarrow_io/libarrow_ipc
• ARROW-802 - [GLib] Add read examples
• ARROW-803 - [GLib] Update package repository URL
• ARROW-804 - [GLib] Update build document
• ARROW-806 - [GLib] Support add/remove a column from table
• ARROW-807 - [GLib] Update "Since" tag
• ARROW-808 - [GLib] Remove needless ignore entries
• ARROW-810 - [GLib] Remove io/ipc prefix
• ARROW-811 - [GLib] Add GArrowBuffer
• ARROW-815 - [Java] Allow for expanding underlying buffer size after allocation
• ARROW-816 - [C++] Use conda packages for RapidJSON, Flatbuffers to speed up builds
• ARROW-818 - [Python] Review public pyarrow. API completeness and update docs
• ARROW-820 - [C++] Build dependencies for Parquet library without arrow support
• ARROW-825 - [Python] Generalize pyarrow.from_pylist to accept any object implementing the PySequence protocol
• ARROW-827 - [Python] Variety of Parquet improvements to support Dask integration
• ARROW-828 - [CPP] Document new requirement (libboost-regex-dev) in README.md
• ARROW-832 - [C++] Upgrade thirdparty gtest to 1.8.0
• ARROW-833 - [Python] "Quickstart" build / environment setup guide for Python developers
• ARROW-841 - [Python] Add pyarrow build to Appveyor
• ARROW-844 - [Format] Revise format/README.md to reflect progress reaching a more complete specification
• ARROW-845 - [Python] Sync FindArrow.cmake changes from parquet-cpp
• ARROW-846 - [GLib] Add GArrowTensor, GArrowInt8Tensor and GArrowUInt8Tensor
• ARROW-848 - [Python] Improvements / fixes to conda quickstart guide
• ARROW-849 - [C++] Add optional $ARROW_BUILD_TOOLCHAIN environment variable option for configuring build environment
• ARROW-857 - [Python] Automate publishing Python documentation to arrow-site
• ARROW-860 - [C++] Decide if typed Tensor subclasses are worthwhile
• ARROW-861 - [Python] Move DEVELOPMENT.md to Sphinx docs
• ARROW-862 - [Python] Improve source build instructions in README
• ARROW-863 - [GLib] Use GBytes to implement zero-copy
• ARROW-864 - [GLib] Unify Array files
• ARROW-868 - [GLib] Use GBytes to reduce copy
• ARROW-871 - [GLib] Unify DataType files
• ARROW-876 - [GLib] Unify ArrayBuffer files
• ARROW-877 - [GLib] Add garrow_array_get_null_bitmap()
• ARROW-878 - [GLib] Add garrow_binary_array_get_buffer()
• ARROW-892 - [GLib] Fix GArrowTensor document
• ARROW-893 - Add GLib document to Web site
• ARROW-894 - [GLib] Add GArrowPoolBuffer
• ARROW-896 - [Docs] Add Jekyll plugin for including rendered Jupyter notebooks on website
• ARROW-898 - [C++] Expand metadata support to field level, provide for sharing instances of KeyValueMetadata
• ARROW-904 - [GLib] Simplify error check codes
• ARROW-907 - C++: Convenience construct Table from schema and arrays
• ARROW-908 - [GLib] Unify OutputStream files
• ARROW-910 - [C++] Write 0-length EOS indicator at end of stream
• ARROW-916 - [GLib] Add GArrowBufferOutputStream
• ARROW-917 - [GLib] Add GArrowBufferReader
• ARROW-918 - [GLib] Use GArrowBuffer for read
• ARROW-919 - [GLib] Use "id" to get type enum value from GArrowDataType
• ARROW-920 - [GLib] Add Lua examples
• ARROW-925 - [GLib] Fix GArrowBufferReader test
• ARROW-930 - javadoc generation fails with java 8
• ARROW-931 - [GLib] Reconstruct input stream

New Feature

• ARROW-231 - C++: Add typed Resize to PoolBuffer
• ARROW-281 - [C++] IPC/RPC support on Win32 platforms
• ARROW-341 - [Python] Making libpyarrow available to third parties
• ARROW-452 - [C++/Python] Merge "Feather" file format implementation
• ARROW-459 - [C++] Implement IPC round trip for DictionaryArray, dictionaries shared across record batches
• ARROW-483 - [C++/Python] Provide access to "custom_metadata" Field attribute in IPC setting
• ARROW-491 - [C++] Add FixedWidthBinary type
• ARROW-493 - [C++] Allow in-memory array over 2^31 -1 elements but require splitting at IPC / RPC boundaries
• ARROW-502 - [C++/Python] Add MemoryPool implementation that logs allocation activity to std::cout
• ARROW-510 - Add integration tests for date and time types
• ARROW-520 - [C++] Add STL-compliant allocator that hooks into an arrow::MemoryPool
• ARROW-528 - [Python] Support _metadata or _common_metadata files when reading Parquet directories
• ARROW-534 - [C++] Add IPC tests for date/time types
• ARROW-539 - [Python] Support reading Parquet datasets with standard partition directory schemes
• ARROW-550 - [Format] Add a TensorMessage type
• ARROW-552 - [Python] Add scalar value support for Dictionary type
• ARROW-557 - [Python] Explicitly opt in to HDFS unit tests
• ARROW-568 - [C++] Add default implementations for TypeVisitor, ArrayVisitor methods that return NotImplemented
• ARROW-574 - Python: Add support for nested Python lists in Pandas conversion
• ARROW-576 - [C++] Complete round trip Union file/stream IPC tests
• ARROW-578 - [C++] Add CMake option to add custom $CXXFLAGS
• ARROW-598 - [Python] Add support for converting pyarrow.Buffer to a memoryview with zero copy
• ARROW-603 - [C++] Add RecordBatch::Validate method that at least checks that schema matches the array metadata
• ARROW-605 - [C++] Refactor generic ArrayLoader class, support work for Feather merge
• ARROW-606 - [C++] Upgrade to flatbuffers 1.6.0
• ARROW-608 - [Format] Days since epoch date type
• ARROW-610 - [C++] Win32 compatibility in file.cc
• ARROW-616 - [C++] Remove -g flag in release builds
• ARROW-618 - [Python] Implement support for DatetimeTZ custom type from pandas
• ARROW-620 - [C++] Add date/time support to JSON reader/writer for integration testing
• ARROW-621 - [C++] Implement an "inline visitor" template that enables visitor-pattern-like code without virtual function dispatch
• ARROW-625 - [C++] Add time unit to TimeType::ToString
• ARROW-626 - [Python] Enable pyarrow.BufferReader to read from any Python object implementing the buffer/memoryview protocol
• ARROW-632 - [Python] Add support for FixedWidthBinary type
• ARROW-635 - [C++] Add JSON read/write support for FixedWidthBinary
• ARROW-637 - [Format] Add time zone metadata to Timestamp type
• ARROW-656 - [C++] Implement IO interface that can read and write to a fixed-size mutable buffer
• ARROW-657 - [Python] Write and read tensors (with zero copy) into shared memory
• ARROW-658 - [C++] Implement in-memory arrow::Tensor objects
• ARROW-659 - [C++] Add multithreaded memcpy implementation (for hardware where it helps)
• ARROW-660 - [C++] Restore function that can read a complete encapsulated record batch message
• ARROW-661 - [C++] Add a Flatbuffer metadata type that supports array data over 2^31 - 1 elements
• ARROW-663 - [Java] Support additional Time metadata + vector value accessors
• ARROW-669 - [Python] Attach proper tzinfo when computing boxed scalars for TimestampArray
• ARROW-687 - [C++] Build and run full test suite in Appveyor
• ARROW-698 - [C++] Add options to StreamWriter/FileWriter to permit large record batches
• ARROW-701 - [Java] Support additional Date metadata
• ARROW-710 - [Python] Enable Feather APIs to read and write using Python file-like objects
• ARROW-717 - [C++] IPC zero-copy round trips for arrow::Tensor
• ARROW-718 - [Python] Expose arrow::Tensor with conversions to/from NumPy arrays
• ARROW-722 - [Python] pandas conversions for new date and time types/metadata
• ARROW-729 - [Java] Add vector type for 32-bit date as days since UNIX epoch
• ARROW-733 - [C++/Format] Change name of Fixed Width Binary to Fixed Size Binary for consistency
• ARROW-734 - [Python] Support for pyarrow on Windows / MSVC
• ARROW-735 - [C++] Developer instruction document for MSVC on Windows
• ARROW-737 - [C++] Support obtaining mutable slices of mutable buffers
• ARROW-768 - [Java] Change the "boxed" object representation of date and time types
• ARROW-771 - [Python] Add APIs for reading individual Parquet row groups
• ARROW-773 - [C++] Add function to create arrow::Table with column appended to existing table
• ARROW-865 - [Python] Verify Parquet roundtrips for new date/time types
• ARROW-880 - [GLib] Add garrow_primitive_array_get_buffer()
• ARROW-890 - [GLib] Add GArrowMutableBuffer
• ARROW-926 - Update KEYS to include wesm

Task

• ARROW-52 - Set up project blog
• ARROW-670 - Arrow 0.3 release
• ARROW-672 - [Format] Bump metadata version for 0.3 release
• ARROW-748 - [Python] Pin runtime library versions in conda-forge packages to force upgrades
• ARROW-798 - [Docs] Publish Format Markdown documents somehow on arrow.apache.org
• ARROW-869 - [JS] Rename directory to js/
• ARROW-95 - Scaffold Main Documentation using asciidoc
• ARROW-98 - Java: API documentation

Test

• ARROW-836 - Test for timedelta compat with pandas
• ARROW-927 - C++/Python: Add manylinux1 builds to Travis matrix

Apache Arrow 0.2.0 (15 February 2017)

Bug

• ARROW-112 - [C++] Style fix for constants/enums
• ARROW-202 - [C++] Integrate with appveyor ci for windows support and get arrow building on windows
• ARROW-220 - [C++] Build conda artifacts in a build environment with better cross-linux ABI compatibility
• ARROW-224 - [C++] Address static linking of boost dependencies
• ARROW-230 - Python: Do not name modules like native ones (i.e. rename pyarrow.io)
• ARROW-239 - [Python] HdfsFile.read called with no arguments should read remainder of file
• ARROW-261 - [C++] Refactor BinaryArray/StringArray classes to not inherit from ListArray
• ARROW-275 - Add tests for UnionVector in Arrow File
• ARROW-294 - [C++] Do not use fopen / fclose / etc. methods for memory mapped file implementation
• ARROW-322 - [C++] Do not build HDFS IO interface optionally
• ARROW-323 - [Python] Opt-in to PyArrow parquet build rather than skipping silently on failure
• ARROW-334 - [Python] OS X rpath issues on some configurations
• ARROW-337 - UnionListWriter.list() is doing more than it should, this can cause data corruption
• ARROW-339 - Make merge_arrow_pr script work with Python 3
• ARROW-340 - [C++] Opening a writeable file on disk that already exists does not truncate to zero
• ARROW-342 - Set Python version on release
• ARROW-345 - libhdfs integration doesn't work for Mac
• ARROW-346 - Python API Documentation
• ARROW-348 - [Python] CMake build type should be configurable on the command line
• ARROW-349 - Six is missing as a requirement in the python setup.py
• ARROW-351 - Time type has no unit
• ARROW-354 - Connot compare an array of empty strings to another
• ARROW-357 - Default Parquet chunk_size of 64k is too small
• ARROW-358 - [C++] libhdfs can be in non-standard locations in some Hadoop distributions
• ARROW-362 - Python: Calling to_pandas on a table read from Parquet leaks memory
• ARROW-371 - Python: Table with null timestamp becomes float in pandas
• ARROW-375 - columns parameter in parquet.read_table() raises KeyError for valid column
• ARROW-384 - Align Java and C++ RecordBatch data and metadata layout
• ARROW-386 - [Java] Respect case of struct / map field names
• ARROW-387 - [C++] arrow::io::BufferReader does not permit shared memory ownership in zero-copy reads
• ARROW-390 - C++: CMake fails on json-integration-test with ARROW_BUILD_TESTS=OFF
• ARROW-392 - Fix string/binary integration tests
• ARROW-393 - [JAVA] JSON file reader fails to set the buffer size on String data vector
• ARROW-395 - Arrow file format writes record batches in reverse order.
• ARROW-398 - [Java] Java file format requires bitmaps of all 1's to be written when there are no nulls
• ARROW-399 - [Java] ListVector.loadFieldBuffers ignores the ArrowFieldNode length metadata
• ARROW-400 - [Java] ArrowWriter writes length 0 for Struct types
• ARROW-401 - [Java] Floating point vectors should do an approximate comparison in integration tests
• ARROW-402 - [Java] "refCnt gone negative" error in integration tests
• ARROW-403 - [JAVA] UnionVector: Creating a transfer pair doesn't transfer the schema to destination vector
• ARROW-404 - [Python] Closing an HdfsClient while there are still open file handles results in a crash
• ARROW-405 - [C++] Be less stringent about finding include/hdfs.h in HADOOP_HOME
• ARROW-406 - [C++] Large HDFS reads must utilize the set file buffer size when making RPCs
• ARROW-408 - [C++/Python] Remove defunct conda recipes
• ARROW-414 - [Java] "Buffer too large to resize to ..." error
• ARROW-420 - Align Date implementation between Java and C++
• ARROW-421 - [Python] Zero-copy buffers read by pyarrow::PyBytesReader must retain a reference to the parent PyBytes to avoid premature garbage collection issues
• ARROW-422 - C++: IPC should depend on rapidjson_ep if RapidJSON is vendored
• ARROW-429 - git-archive SHA-256 checksums are changing
• ARROW-433 - [Python] Date conversion is locale-dependent
• ARROW-434 - Segfaults and encoding issues in Python Parquet reads
• ARROW-435 - C++: Spelling mistake in if(RAPIDJSON_VENDORED)
• ARROW-437 - [C++] clang compiler warnings from overridden virtual functions
• ARROW-445 - C++: arrow_ipc is built before arrow/ipc/Message_generated.h was generated
• ARROW-447 - Python: Align scalar/pylist string encoding with pandas' one.
• ARROW-455 - [C++] BufferOutputStream dtor does not call Close()
• ARROW-469 - C++: Add option so that resize doesn't decrease the capacity
• ARROW-481 - [Python] Fix Python 2.7 regression in patch for PARQUET-472
• ARROW-486 - [C++] arrow::io::MemoryMappedFile can't be casted to arrow::io::FileInterface
• ARROW-487 - Python: ConvertTableToPandas segfaults if ObjectBlock::Write fails
• ARROW-494 - [C++] When MemoryMappedFile is destructed, memory is unmapped even if buffer referecnes still exist
• ARROW-499 - Update file serialization to use streaming serialization format
• ARROW-505 - [C++] Fix compiler warnings in release mode
• ARROW-511 - [Python] List[T] conversions not implemented for single arrays
• ARROW-513 - [C++] Fix Appveyor build
• ARROW-519 - [C++] Missing vtable in libarrow.dylib on Xcode 6.4
• ARROW-523 - Python: Account for changes in PARQUET-834
• ARROW-533 - [C++] arrow::TimestampArray / TimeArray has a broken constructor
• ARROW-535 - [Python] Add type mapping for NPY_LONGLONG
• ARROW-537 - [C++] StringArray/BinaryArray comparisons may be incorrect when values with non-zero length are null
• ARROW-540 - [C++] Fix build in aftermath of ARROW-33
• ARROW-543 - C++: Lazily computed null_counts counts number of non-null entries
• ARROW-544 - [C++] ArrayLoader::LoadBinary fails for length-0 arrays
• ARROW-545 - [Python] Ignore files without .parq or .parquet prefix when reading directory of files
• ARROW-548 - [Python] Add nthreads option to pyarrow.Filesystem.read_parquet
• ARROW-551 - C++: Construction of Column with nullptr Array segfaults
• ARROW-556 - [Integration] Can not run Integration tests if different cpp build path
• ARROW-561 - Update java & python dependencies to improve downstream packaging experience

Improvement

• ARROW-189 - C++: Use ExternalProject to build thirdparty dependencies
• ARROW-191 - Python: Provide infrastructure for manylinux1 wheels
• ARROW-328 - [C++] Return shared_ptr by value instead of const-ref?
• ARROW-330 - [C++] CMake functions to simplify shared / static library configuration
• ARROW-333 - Make writers update their internal schema even when no data is written.
• ARROW-335 - Improve Type apis and toString() by encapsulating flatbuffers better
• ARROW-336 - Run Apache Rat in Travis builds
• ARROW-338 - [C++] Refactor IPC vector "loading" and "unloading" to be based on cleaner visitor pattern
• ARROW-350 - Add Kerberos support to HDFS shim
• ARROW-355 - Add tests for serialising arrays of empty strings to Parquet
• ARROW-356 - Add documentation about reading Parquet
• ARROW-360 - C++: Add method to shrink PoolBuffer using realloc
• ARROW-361 - Python: Support reading a column-selection from Parquet files
• ARROW-365 - Python: Provide Array.to_pandas()
• ARROW-366 - [java] implement Dictionary vector
• ARROW-374 - Python: clarify unicode vs. binary in API
• ARROW-379 - Python: Use setuptools_scm/setuptools_scm_git_archive to provide the version number
• ARROW-380 - [Java] optimize null count when serializing vectors.
• ARROW-382 - Python: Extend API documentation
• ARROW-396 - Python: Add pyarrow.schema.Schema.equals
• ARROW-409 - Python: Change pyarrow.Table.dataframe_from_batches API to create Table instead
• ARROW-411 - [Java] Move Intergration.compare and Intergration.compareSchemas to a public utils class
• ARROW-423 - C++: Define BUILD_BYPRODUCTS in external project to support non-make CMake generators
• ARROW-425 - Python: Expose a C function to convert arrow::Table to pyarrow.Table
• ARROW-426 - Python: Conversion from pyarrow.Array to a Python list
• ARROW-430 - Python: Better version handling
• ARROW-432 - [Python] Avoid unnecessary memory copy in to_pandas conversion by using low-level pandas internals APIs
• ARROW-450 - Python: Fixes for PARQUET-818
• ARROW-457 - Python: Better control over memory pool
• ARROW-458 - Python: Expose jemalloc MemoryPool
• ARROW-463 - C++: Support jemalloc 4.x
• ARROW-466 - C++: ExternalProject for jemalloc
• ARROW-468 - Python: Conversion of nested data in pd.DataFrames to/from Arrow structures
• ARROW-474 - Create an Arrow streaming file fomat
• ARROW-479 - Python: Test for expected schema in Pandas conversion
• ARROW-485 - [Java] Users are required to initialize VariableLengthVectors.offsetVector before calling VariableLengthVectors.mutator.getSafe
• ARROW-490 - Python: Update manylinux1 build scripts
• ARROW-524 - [java] provide apis to access nested vectors and buffers
• ARROW-525 - Python: Add more documentation to the package
• ARROW-529 - Python: Add jemalloc and Python 3.6 to manylinux1 build
• ARROW-546 - Python: Account for changes in PARQUET-867
• ARROW-553 - C++: Faster valid bitmap building

New Feature

• ARROW-108 - [C++] Add IPC round trip for union types
• ARROW-221 - Add switch for writing Parquet 1.0 compatible logical types
• ARROW-227 - [C++/Python] Hook arrow_io generic reader / writer interface into arrow_parquet
• ARROW-228 - [Python] Create an Arrow-cpp-compatible interface for reading bytes from Python file-like objects
• ARROW-243 - [C++] Add "driver" option to HdfsClient to choose between libhdfs and libhdfs3 at runtime
• ARROW-303 - [C++] Also build static libraries for leaf libraries
• ARROW-312 - [Python] Provide Python API to read/write the Arrow IPC file format
• ARROW-317 - [C++] Implement zero-copy Slice method on arrow::Buffer that retains reference to parent
• ARROW-33 - C++: Implement zero-copy array slicing
• ARROW-332 - [Python] Add helper function to convert RecordBatch to pandas.DataFrame
• ARROW-363 - Set up Java/C++ integration test harness
• ARROW-369 - [Python] Add ability to convert multiple record batches at once to pandas
• ARROW-373 - [C++] Implement C++ version of JSON file format for testing
• ARROW-377 - Python: Add support for conversion of Pandas.Categorical
• ARROW-381 - [C++] Simplify primitive array type builders to use a default type singleton
• ARROW-383 - [C++] Implement C++ version of ARROW-367 integration test validator
• ARROW-389 - Python: Write Parquet files to pyarrow.io.NativeFile objects
• ARROW-394 - Add integration tests for boolean, list, struct, and other basic types
• ARROW-410 - [C++] Add Flush method to arrow::io::OutputStream
• ARROW-415 - C++: Add Equals implementation to compare Tables
• ARROW-416 - C++: Add Equals implementation to compare Columns
• ARROW-417 - C++: Add Equals implementation to compare ChunkedArrays
• ARROW-418 - [C++] Consolidate array container and builder code, remove arrow/types
• ARROW-419 - [C++] Promote util/{status.h, buffer.h, memory-pool.h} to top level of arrow/ source directory
• ARROW-427 - [C++] Implement dictionary-encoded array container
• ARROW-428 - [Python] Deserialize from Arrow record batches to pandas in parallel using a thread pool
• ARROW-438 - [Python] Concatenate Table instances with equal schemas
• ARROW-440 - [C++] Support pkg-config
• ARROW-441 - [Python] Expose Arrow's file and memory map classes as NativeFile subclasses
• ARROW-442 - [Python] Add public Python API to inspect Parquet file metadata
• ARROW-444 - [Python] Avoid unnecessary memory copies from use of PyBytes_* C APIs
• ARROW-449 - Python: Conversion from pyarrow.{Table,RecordBatch} to a Python dict
• ARROW-456 - C++: Add jemalloc based MemoryPool
• ARROW-461 - [Python] Implement conversion between arrow::DictionaryArray and pandas.Categorical
• ARROW-467 - [Python] Run parquet-cpp unit tests in Travis CI
• ARROW-470 - [Python] Add "FileSystem" abstraction to access directories of files in a uniform way
• ARROW-471 - [Python] Enable ParquetFile to pass down separately-obtained file metadata
• ARROW-472 - [Python] Expose parquet::{SchemaDescriptor, ColumnDescriptor}::Equals
• ARROW-475 - [Python] High level support for reading directories of Parquet files (as a single Arrow table) from supported file system interfaces
• ARROW-476 - [Integration] Add integration tests for Binary / Varbytes type
• ARROW-477 - [Java] Add support for second/microsecond/nanosecond timestamps in-memory and in IPC/JSON layer
• ARROW-478 - [Python] Accept a PyBytes object in the pyarrow.io.BufferReader ctor
• ARROW-484 - Add more detail about what of technology can be found in the Arrow implementations to README
• ARROW-495 - [C++] Add C++ implementation of streaming serialized format
• ARROW-497 - [Java] Integration test harness for streaming format
• ARROW-498 - [C++] Integration test harness for streaming format
• ARROW-503 - [Python] Interface to streaming binary format
• ARROW-508 - [C++] Make file/memory-mapped file interfaces threadsafe
• ARROW-509 - [Python] Add support for PARQUET-835 (parallel column reads)
• ARROW-512 - C++: Add method to check for primitive types
• ARROW-514 - [Python] Accept pyarrow.io.Buffer as input to StreamReader, FileReader classes
• ARROW-515 - [Python] Add StreamReader/FileReader methods that read all record batches as a Table
• ARROW-521 - [C++/Python] Track peak memory use in default MemoryPool
• ARROW-531 - Python: Document jemalloc, extend Pandas section, add Getting Involved
• ARROW-538 - [C++] Set up AddressSanitizer (ASAN) builds
• ARROW-547 - [Python] Expose Array::Slice and RecordBatch::Slice
• ARROW-81 - [Format] Add a Category logical type (distinct from dictionary-encoding)

Task

• ARROW-268 - [C++] Flesh out union implementation to have all required methods for IPC
• ARROW-327 - [Python] Remove conda builds from Travis CI processes
• ARROW-353 - Arrow release 0.2
• ARROW-359 - Need to document ARROW_LIBHDFS_DIR
• ARROW-367 - [java] converter csv/json <=> Arrow file format for Integration tests
• ARROW-368 - Document use of LD_LIBRARY_PATH when using Python
• ARROW-372 - Create JSON arrow file format for integration tests
• ARROW-506 - Implement Arrow Echo server for integration testing
• ARROW-527 - clean drill-module.conf file
• ARROW-558 - Add KEYS files
• ARROW-96 - C++: API documentation using Doxygen
• ARROW-97 - Python: API documentation via sphinx-apidoc

Apache Arrow 0.1.0 (7 October 2016)

Bug

• ARROW-103 - Missing patterns from .gitignore
• ARROW-104 - Update Layout.md based on discussion on the mailing list
• ARROW-105 - Unit tests fail if assertions are disabled
• ARROW-113 - TestValueVector test fails if cannot allocate 2GB of memory
• ARROW-16 - Building cpp issues on XCode 7.2.1
• ARROW-17 - Set some vector fields to default access level for Drill compatibility
• ARROW-18 - Fix bug with decimal precision and scale
• ARROW-185 - [C++] Make sure alignment and memory padding conform to spec
• ARROW-188 - Python: Add numpy as install requirement
• ARROW-193 - For the instruction, typos "int his" should be "in this"
• ARROW-194 - C++: Allow read-only memory mapped source
• ARROW-200 - [Python] Convert Values String looks like it has incorrect error handling
• ARROW-209 - [C++] Broken builds: llvm.org apt repos are unavailable
• ARROW-210 - [C++] Tidy up the type system a little bit
• ARROW-211 - Several typos/errors in Layout.md examples
• ARROW-217 - Fix Travis w.r.t conda 4.1.0 changes
• ARROW-219 - [C++] Passed CMAKE_CXX_FLAGS are being dropped, fix compiler warnings
• ARROW-223 - Do not link against libpython
• ARROW-225 - [C++/Python] master Travis CI build is broken
• ARROW-244 - [C++] Some global APIs of IPC module should be visible to the outside
• ARROW-246 - [Java] UnionVector doesn't call allocateNew() when creating it's vectorType
• ARROW-247 - [C++] Missing explicit destructor in RowBatchReader causes an incomplete type error
• ARROW-250 - Fix for ARROW-246 may cause memory leaks
• ARROW-259 - Use flatbuffer fields in java implementation
• ARROW-265 - Negative decimal values have wrong padding
• ARROW-266 - [C++] Fix the broken build
• ARROW-274 - Make the MapVector nullable
• ARROW-278 - [Format] Struct type name consistency in implementations and metadata
• ARROW-283 - [C++] Update arrow_parquet to account for API changes in PARQUET-573
• ARROW-284 - [C++] Triage builds by disabling Arrow-Parquet module
• ARROW-287 - [java] Make nullable vectors use a BitVecor instead of UInt1Vector for bits
• ARROW-297 - Fix Arrow pom for release
• ARROW-304 - NullableMapReaderImpl.isSet() always returns true
• ARROW-308 - UnionListWriter.setPosition() should not call startList()
• ARROW-309 - Types.getMinorTypeForArrowType() does not work for Union type
• ARROW-313 - XCode 8.0 breaks builds
• ARROW-314 - JSONScalar is unnecessary and unused.
• ARROW-320 - ComplexCopier.copy(FieldReader, FieldWriter) should not start a list if reader is not set
• ARROW-321 - Fix Arrow licences
• ARROW-36 - Remove fixVersions from patch tool (until we have them)
• ARROW-46 - Port DRILL-4410 to Arrow
• ARROW-5 - Error when run maven install
• ARROW-51 - Move ValueVector test from Drill project
• ARROW-55 - Python: fix legacy Python (2.7) tests and add to Travis CI
• ARROW-62 - Format: Are the nulls bits 0 or 1 for null values?
• ARROW-63 - C++: ctest fails if Python 3 is the active Python interpreter
• ARROW-65 - Python: FindPythonLibsNew does not work in a virtualenv
• ARROW-69 - Change permissions for assignable users
• ARROW-72 - FindParquet searches for non-existent header
• ARROW-75 - C++: Fix handling of empty strings
• ARROW-77 - C++: conform null bit interpretation to match ARROW-62
• ARROW-80 - Segmentation fault on len(Array) for empty arrays
• ARROW-88 - C++: Refactor given PARQUET-572
• ARROW-93 - XCode 7.3 breaks builds
• ARROW-94 - Expand list example to clarify null vs empty list

Improvement

• ARROW-10 - Fix mismatch of javadoc names and method parameters
• ARROW-15 - Fix a naming typo for memory.AllocationManager.AllocationOutcome
• ARROW-190 - Python: Provide installable sdist builds
• ARROW-199 - [C++] Refine third party dependency
• ARROW-206 - [C++] Expose an equality API for arrays that compares a range of slots on two arrays
• ARROW-212 - [C++] Clarify the fact that PrimitiveArray is now abstract class
• ARROW-213 - Exposing static arrow build
• ARROW-218 - Add option to use GitHub API token via environment variable when merging PRs
• ARROW-234 - [C++] Build with libhdfs support in arrow_io in conda builds
• ARROW-238 - C++: InternalMemoryPool::Free() should throw an error when there is insufficient allocated memory
• ARROW-245 - [Format] Clarify Arrow's relationship with big endian platforms
• ARROW-252 - Add implementation guidelines to the documentation
• ARROW-253 - Int types should only have width of 8*2^n (8, 16, 32, 64)
• ARROW-254 - Remove Bit type as it is redundant with boolean
• ARROW-255 - Finalize Dictionary representation
• ARROW-256 - Add versioning to the arrow spec.
• ARROW-257 - Add a typeids Vector to Union type
• ARROW-264 - Create an Arrow File format
• ARROW-270 - [Format] Define more generic Interval logical type
• ARROW-271 - Update Field structure to be more explicit
• ARROW-279 - rename vector module to arrow-vector for consistency
• ARROW-280 - [C++] Consolidate file and shared memory IO interfaces
• ARROW-285 - Allow for custom flatc compiler
• ARROW-286 - Build thirdparty dependencies in parallel
• ARROW-289 - Install test-util.h
• ARROW-290 - Specialize alloc() in ArrowBuf
• ARROW-292 - [Java] Upgrade Netty to 4.041
• ARROW-299 - Use absolute namespace in macros
• ARROW-305 - Add compression and use_dictionary options to Parquet interface
• ARROW-306 - Add option to pass cmake arguments via environment variable
• ARROW-315 - Finalize timestamp type
• ARROW-319 - Add canonical Arrow Schema json representation
• ARROW-324 - Update arrow metadata diagram
• ARROW-325 - make TestArrowFile not dependent on timezone
• ARROW-50 - C++: Enable library builds for 3rd-party users without having to build thirdparty googletest
• ARROW-54 - Python: rename package to "pyarrow"
• ARROW-64 - Add zsh support to C++ build scripts
• ARROW-66 - Maybe some missing steps in installation guide
• ARROW-68 - Update setup_build_env and third-party script to be more userfriendly
• ARROW-71 - C++: Add script to run clang-tidy on codebase
• ARROW-73 - Support CMake 2.8
• ARROW-78 - C++: Add constructor for DecimalType
• ARROW-79 - Python: Add benchmarks
• ARROW-8 - Set up Travis CI
• ARROW-85 - C++: memcmp can be avoided in Equal when comparing with the same Buffer
• ARROW-86 - Python: Implement zero-copy Arrow-to-Pandas conversion
• ARROW-87 - Implement Decimal schema conversion for all ways supported in Parquet
• ARROW-89 - Python: Add benchmarks for Arrow<->Pandas conversion
• ARROW-9 - Rename some unchanged "Drill" to "Arrow"
• ARROW-91 - C++: First draft of an adapter class for parquet-cpp's ParquetFileReader that produces Arrow table/row batch objects

New Feature

• ARROW-100 - [C++] Computing RowBatch size
• ARROW-106 - Add IPC round trip for string types (string, char, varchar, binary)
• ARROW-107 - [C++] add ipc round trip for struct types
• ARROW-13 - Add PR merge tool similar to that used in Parquet
• ARROW-19 - C++: Externalize memory allocations and add a MemoryPool abstract interface to builder classes
• ARROW-197 - [Python] Add conda dev recipe for pyarrow
• ARROW-2 - Post Simple Website
• ARROW-20 - C++: Add null count member to Array containers, remove nullable member
• ARROW-201 - C++: Initial ParquetWriter implementation
• ARROW-203 - Python: Basic filename based Parquet read/write
• ARROW-204 - [Python] Automate uploading conda build artifacts for libarrow and pyarrow
• ARROW-21 - C++: Add in-memory schema metadata container
• ARROW-214 - C++: Add String support to Parquet I/O
• ARROW-215 - C++: Support other integer types in Parquet I/O
• ARROW-22 - C++: Add schema adapter routines for converting flat Parquet schemas to in-memory Arrow schemas
• ARROW-222 - [C++] Create prototype file-like interface to HDFS (via libhdfs) and begin defining more general IO interface for Arrow data adapters
• ARROW-23 - C++: Add logical "Column" container for chunked data
• ARROW-233 - [C++] Add visibility defines for limiting shared library symbol visibility
• ARROW-236 - [Python] Enable Parquet read/write to work with HDFS file objects
• ARROW-237 - [C++] Create Arrow specializations of Parquet allocator and read interfaces
• ARROW-24 - C++: Add logical "Table" container
• ARROW-242 - C++/Python: Support Timestamp Data Type
• ARROW-26 - C++: Add developer instructions for building parquet-cpp integration
• ARROW-262 - [Format] Add a new format document for metadata and logical types for messaging and IPC / on-wire/file representations
• ARROW-267 - [C++] C++ implementation of file-like layout for RPC / IPC
• ARROW-28 - C++: Add google/benchmark to the 3rd-party build toolchain
• ARROW-293 - [C++] Implementations of IO interfaces for operating system files
• ARROW-296 - [C++] Remove arrow_parquet C++ module and related parts of build system
• ARROW-3 - Post Initial Arrow Format Spec
• ARROW-30 - Python: pandas/NumPy to/from Arrow conversion routines
• ARROW-301 - [Format] Add some form of user field metadata to IPC schemas
• ARROW-302 - [Python] Add support to use the Arrow file format with file-like objects
• ARROW-31 - Python: basic PyList <-> Arrow marshaling code
• ARROW-318 - [Python] Revise README to reflect current state of project
• ARROW-37 - C++: Represent boolean array data in bit-packed form
• ARROW-4 - Initial Arrow CPP Implementation
• ARROW-42 - Python: Add to Travis CI build
• ARROW-43 - Python: Add rudimentary console repr for array types
• ARROW-44 - Python: Implement basic object model for scalar values (i.e. results of arrow_arr[i])
• ARROW-48 - Python: Add Schema object wrapper
• ARROW-49 - Python: Add Column and Table wrapper interface
• ARROW-53 - Python: Fix RPATH and add source installation instructions
• ARROW-56 - Format: Specify LSB bit ordering in bit arrays
• ARROW-57 - Format: Draft data headers IDL for data interchange
• ARROW-58 - Format: Draft type metadata ("schemas") IDL
• ARROW-59 - Python: Boolean data support for builtin data structures
• ARROW-60 - C++: Struct type builder API
• ARROW-67 - C++: Draft type metadata conversion to/from IPC representation
• ARROW-7 - Add Python library build toolchain
• ARROW-70 - C++: Add "lite" DCHECK macros used in parquet-cpp
• ARROW-76 - Revise format document to include null count, defer non-nullable arrays to the domain of metadata
• ARROW-82 - C++: Implement IPC exchange for List types
• ARROW-90 - Apache Arrow cpp code does not support power architecture
• ARROW-92 - C++: Arrow to Parquet Schema conversion

Task

• ARROW-1 - Import Initial Codebase
• ARROW-101 - Fix java warnings emitted by java compiler
• ARROW-102 - travis-ci support for java project
• ARROW-11 - Mirror JIRA activity to [email protected]
• ARROW-14 - Add JIRA components
• ARROW-251 - [C++] Expose APIs for getting code and message of the status
• ARROW-272 - Arrow release 0.1
• ARROW-298 - create release scripts
• ARROW-35 - Add a short call-to-action / how-to-get-involved to the main README.md

Test

• ARROW-260 - TestValueVector.testFixedVectorReallocation and testVariableVectorReallocation are flaky
• ARROW-83 - Add basic test infrastructure for DecimalType