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Release 2.0.0

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Due by September 30, 2025
Last updated Jun 6, 2025
45% complete

This milestone tracks issues targeted for the HDF5 2.0 release to ensure timely completion. Do not add issues to this milestone unless they have an assigned resource, a defined timeline, and a confirmed funding source

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0 issues of 90 selected

  • Move VOL tools testing to the library

    Component - TestingCode in test or testpar directories, GitHub workflows
    Component - ToolsCommand-line tools like h5dump, includes high-level tools
    HDFG-internalInternally coded for use by the HDF Group
    Priority - 1. HighThese are important issues that should be resolved in the next release
    Status: Open.
    Enhancement
    #5117 In HDFGroup/hdf5;
    · derobins opened on Nov 14, 2024

  • Fix the file free space manager infinite loop bug

    Component - C LibraryCore C library issues (usually in the src directory)
    Component - ParallelParallel HDF5 (NOT thread-safety)
    HDFG-internalInternally coded for use by the HDF Group
    Priority - 0. BlockerThis MUST be merged for the release to happen
    Status: Open.
    Bug
    #5121 In HDFGroup/hdf5;
    · derobins opened on Nov 14, 2024

  • Stack overflow when parsing corrupt file

    Component - C LibraryCore C library issues (usually in the src directory)
    HDFG-internalInternally coded for use by the HDF Group
    Priority - 1. HighThese are important issues that should be resolved in the next release
    Type - SecuritySecurity issues, including library crashers and memory leaks
    Status: Open.
    Bug
    #4111 In HDFGroup/hdf5;
    · tbeu opened on Mar 10, 2024

  • Enable the subfiling VFD by default

    Component - BuildCMake, Autotools
    Component - ParallelParallel HDF5 (NOT thread-safety)
    Priority - 2. MediumIt would be nice to have this in the next release
    Status: Open.
    Task
    #3985 In HDFGroup/hdf5;
    · brtnfld opened on Feb 2, 2024

  • Regression with 1.14.4-3 H5Fcreate opens and close file with wide chars (example chinese characters)

    Component - C LibraryCore C library issues (usually in the src directory)
    Priority - 0. BlockerThis MUST be merged for the release to happen
    Status: Open.
    Bug
    #4599 In HDFGroup/hdf5;
    · Nelson-numerical-software opened on Jun 22, 2024

  • Crash when copying a group with references to another file

    Component - C LibraryCore C library issues (usually in the src directory)
    Component - ToolsCommand-line tools like h5dump, includes high-level tools
    Priority - 1. HighThese are important issues that should be resolved in the next release
    Status: Open.
    Bug
    #3429 In HDFGroup/hdf5;
    · roosre opened on Aug 25, 2023

  • Check for invalid file name for family driver

    Component - C LibraryCore C library issues (usually in the src directory)
    Component - DocumentationDoxygen, markdown, etc.
    HDFG-internalInternally coded for use by the HDF Group
    Priority - 0. BlockerThis MUST be merged for the release to happen
    Status: Open.
    Bug
    #4680 In HDFGroup/hdf5;
    · bmribler opened on Jul 30, 2024

  • Fix NVHPC dt_artih and dtransform failures

    Component - C LibraryCore C library issues (usually in the src directory)
    Priority - 1. HighThese are important issues that should be resolved in the next release
    Status: Open.
    Bug
    #4767 In HDFGroup/hdf5;
    · derobins opened on Aug 26, 2024

  • core driver performance prohibitively slow on Windows

    Component - C LibraryCore C library issues (usually in the src directory)
    Priority - 0. BlockerThis MUST be merged for the release to happen
    Status: Open.
    Enhancement
    #3275 In HDFGroup/hdf5;
    · AlexKirko opened on Jul 26, 2023

  • H5FD__direct_write() makes an unnecessary copy

    Component - C LibraryCore C library issues (usually in the src directory)
    Priority - 1. HighThese are important issues that should be resolved in the next release
    Status: Open.
    Bug
    #2714 In HDFGroup/hdf5;
    · weikra opened on Apr 13, 2023

  • file_offset_t < size_t on mingw

    Component - C LibraryCore C library issues (usually in the src directory)
    Priority - 1. HighThese are important issues that should be resolved in the next release
    Status: Open.
    Bug
    #3091 In HDFGroup/hdf5;
    · mulimoen opened on Jun 9, 2023

  • H5Dwrite execution time in Windows increases in subsequent runs when a variable is written with chunking and compression

    Component - C LibraryCore C library issues (usually in the src directory)
    HDFG-internalInternally coded for use by the HDF Group
    Priority - 1. HighThese are important issues that should be resolved in the next release
    Status: Open.
    Bug
    #3858 In HDFGroup/hdf5;
    · abhibaruah opened on Nov 16, 2023

  • Attributes are not stored in dense storage

    Component - C LibraryCore C library issues (usually in the src directory)
    Priority - 1. HighThese are important issues that should be resolved in the next release
    Status: Open.
    Bug
    #3815 In HDFGroup/hdf5;
    · radistmorse opened on Nov 1, 2023

  • H5Centry.c:1232: H5C__load_entry: Assertion `entry->size < H5C_MAX_ENTRY_SIZE' failed.

    Component - C LibraryCore C library issues (usually in the src directory)
    Priority - 1. HighThese are important issues that should be resolved in the next release
    Status: Open.
    Bug
    #3762 In HDFGroup/hdf5;
    · gheber opened on Oct 24, 2023

  • h5repack tests for compression filters need review

    Component - ToolsCommand-line tools like h5dump, includes high-level tools
    HDFG-internalInternally coded for use by the HDF Group
    Priority - 1. HighThese are important issues that should be resolved in the next release
    Status: Open.
    Bug
    #4524 In HDFGroup/hdf5;
    · byrnHDF opened on May 24, 2024

  • Reading a hyperslab of a dataset with an unlimited dimension increases the execution time in successive runs

    Component - C LibraryCore C library issues (usually in the src directory)
    HDFG-internalInternally coded for use by the HDF Group
    Priority - 1. HighThese are important issues that should be resolved in the next release
    Status: Open.
    Bug
    #4513 In HDFGroup/hdf5;
    · abhibaruah opened on May 21, 2024

  • Reading a hyperslab of a limited dataset after an unlimited dataset increases the execution time of the former after multiple runs.

    Component - C LibraryCore C library issues (usually in the src directory)
    HDFG-internalInternally coded for use by the HDF Group
    Priority - 0. BlockerThis MUST be merged for the release to happen
    Status: Open.
    Bug
    #4481 In HDFGroup/hdf5;
    · abhibaruah opened on May 13, 2024

  • heap-buffer-overflow in H5Odtype.c

    Component - C LibraryCore C library issues (usually in the src directory)
    HDFG-internalInternally coded for use by the HDF Group
    Priority - 1. HighThese are important issues that should be resolved in the next release
    Type - SecuritySecurity issues, including library crashers and memory leaks
    Status: Open.
    Bug
    #4436 In HDFGroup/hdf5;
    · gabe-sherman opened on Apr 21, 2024

  • allocation-size-too-big error in H5Centry.c

    Component - C LibraryCore C library issues (usually in the src directory)
    Confirmed
    HDFG-internalInternally coded for use by the HDF Group
    Priority - 1. HighThese are important issues that should be resolved in the next release
    Type - SecuritySecurity issues, including library crashers and memory leaks
    Status: Open.
    Bug
    #4435 In HDFGroup/hdf5;
    · gabe-sherman opened on Apr 21, 2024

  • Fortran library initialization fails in 1_14-9f7b987 (gfortran)

    Component - WrappersC++, Java & Fortran wrappers
    Priority - 1. HighThese are important issues that should be resolved in the next release
    Status: Open.
    Bug
    #4310 In HDFGroup/hdf5;
    · jefflee-icesat2 opened on Apr 2, 2024

  • Add h5* compiler wrapper testing for CMake

    Component - ToolsCommand-line tools like h5dump, includes high-level tools
    HDFG-internalInternally coded for use by the HDF Group
    Priority - 2. MediumIt would be nice to have this in the next release
    Status: Open.
    Task
    #4605 In HDFGroup/hdf5;
    · brtnfld opened on Jun 25, 2024

  • A memory leak was found while testing h5_extended_fuzzer with libfuzzer

    Component - C LibraryCore C library issues (usually in the src directory)
    HDFG-internalInternally coded for use by the HDF Group
    Priority - 1. HighThese are important issues that should be resolved in the next release
    Type - SecuritySecurity issues, including library crashers and memory leaks
    Status: Open.
    Bug
    #4586 In HDFGroup/hdf5;
    · MageWeiG opened on Jun 19, 2024

  • h5* generated CMake wrappers lack options that are present in h5* wrappers generated with Autotools.

    Component - ToolsCommand-line tools like h5dump, includes high-level tools
    HDFG-internalInternally coded for use by the HDF Group
    Priority - 1. HighThese are important issues that should be resolved in the next release
    Status: Open.
    Task
    #4582 In HDFGroup/hdf5;
    · brtnfld opened on Jun 18, 2024

  • h5diff fails comparing references

    Component - ToolsCommand-line tools like h5dump, includes high-level tools
    Priority - 1. HighThese are important issues that should be resolved in the next release
    Status: Open.
    Bug
    #4134 In HDFGroup/hdf5;
    · byrnHDF opened on Mar 14, 2024

  • HDF5 crashes with inefficient compressors

    Component - C LibraryCore C library issues (usually in the src directory)
    Priority - 0. BlockerThis MUST be merged for the release to happen
    Priority - 1. HighThese are important issues that should be resolved in the next release
    Type - SecuritySecurity issues, including library crashers and memory leaks
    Status: Open.
    Bug
    #108 In HDFGroup/hdf5;
    · lucasvr opened on Nov 20, 2020
    •