Issues

• Harden attrs support

  bugenhancementlow_priority
  deshaw/versioned-hdf5#592 · Filter by author crusaderky opened on Oct 2, 2026

• stage_version() fails with ValueError after a string dataset is rewritten, enlarged and read with astype("T")

  deshaw/versioned-hdf5#587 · Filter by author krassowski opened on Sep 25, 2026

• VersionedHDF5File.__getitem__ returns a version whose datasets were closed with another handle on the same file

  deshaw/versioned-hdf5#577 · Filter by author krassowski opened on Sep 24, 2026

• recreate_dataset after #556: the hash table load and the deduplication map are rebuilt for every 16 MiB block

  deshaw/versioned-hdf5#562 · Filter by author krassowski opened on Sep 4, 2026
  2

• modify_metadata holds every version in memory; it does not benefit from streaming added by #556

  deshaw/versioned-hdf5#559 · Filter by author krassowski opened on Sep 4, 2026

• Improve robustness in multi-threading use cases

  Medium Priority
  deshaw/versioned-hdf5#548 · Filter by author crusaderky opened on Aug 13, 2026

• modify_metadata breaks writes to fixed-length string datasets with a misleading "variable length strings" error

  bugMedium Priority
  deshaw/versioned-hdf5#537 · Filter by author krassowski opened on Aug 7, 2026

• modify_metadata corrupts variable-width string datasets: no further version can be staged

  bugMedium Priority
  deshaw/versioned-hdf5#536 · Filter by author krassowski opened on Aug 7, 2026

• Stream larger-than-memory data onto a single dataset version

  enhancementlow_priorityNice-to-have
  deshaw/versioned-hdf5#527 · Filter by author RonanDaly opened on Jul 24, 2026
  1

• Linux wheels CI broken; h5py 3.16 will break wheels compatibility again

  Medium Prioritywheels
  deshaw/versioned-hdf5#477 · Filter by author crusaderky opened on Jan 12, 2026
  1

• test_mask_reading_read_only failure on conda hdf5 1.10

  buglow_priority
  deshaw/versioned-hdf5#465 · Filter by author crusaderky opened on Nov 21, 2025

• versioned-hdf5.delete_versions causes h5repack segfault

  bug
  deshaw/versioned-hdf5#463 · Filter by author crusaderky opened on Oct 30, 2025
  4

• Publish wheels to test.pypi.org

  enhancementlow_priorityNice-to-have
  deshaw/versioned-hdf5#447 · Filter by author crusaderky opened on Jul 14, 2025

• Speed up variable-width strings hashing

  enhancement
  deshaw/versioned-hdf5#439 · Filter by author crusaderky opened on Jun 20, 2025

• Track and increase test coverage

  tests
  deshaw/versioned-hdf5#424 · Filter by author crusaderky opened on Apr 8, 2025

• Evaluate free threading status (PyInf#14207)

  enhancement
  deshaw/versioned-hdf5#408 · Filter by author ArvidJB opened on Dec 18, 2024
  6

  

• Initial overhead to accessing a versioned Dataset if very high (PyInf#14142)

  deshaw/versioned-hdf5#401 · Filter by author ArvidJB opened on Nov 20, 2024
  3

  

• Redesign the commit stage

  enhancement
  deshaw/versioned-hdf5#398 · Filter by author crusaderky opened on Oct 31, 2024
  8

  

• Support chunk cache in versioned-hdf5 (PyInf#13103)

  deshaw/versioned-hdf5#357 · Filter by author ArvidJB opened on Jul 23, 2024
  4

  

• segfault at exit when an exception exited stage_version context

  question
  deshaw/versioned-hdf5#250 · Filter by author quarl opened on Jun 19, 2023
  3

  

• Test upstream h5py fixed length string fix on CI

  low_priority
  deshaw/versioned-hdf5#236 · Filter by author asmeurer opened on Aug 17, 2022 · November 2022
  2

  

• create_virtual_dataset is slow

  deshaw/versioned-hdf5#226 · Filter by author ArvidJB opened on May 3, 2022 · July 2022
  2

  

• High dimensional versioned Datasets are slow to read

  deshaw/versioned-hdf5#224 · Filter by author ArvidJB opened on May 2, 2022 · May 2022
  1

  

• h5py reference counting bug with release 1.3.7

  deshaw/versioned-hdf5#216 · Filter by author ArvidJB opened on Feb 1, 2022 · April 2022
  5

• Enable compression for hash_table

  deshaw/versioned-hdf5#210 · Filter by author ArvidJB opened on Oct 19, 2021
  7