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CMIP6 files in the wild use fractal heaps with huge instances and internal b-tree indexes

bug

enhancement

Status: Open.

#243 In NCAS-CMS/pyfive;

· bnlawrence opened on Jun 24, 2026

difference in check_dtype for vlen compared to h5py

bug

Status: Open.

#228 In NCAS-CMS/pyfive;

· kmuehlbauer opened on May 8, 2026

Datasets not truly independent from files on remote file systems.

Status: Open.

#219 In NCAS-CMS/pyfive;

· bnlawrence opened on Apr 6, 2026

Policy for AI written code - please comment!

Status: Open.

#215 In NCAS-CMS/pyfive;

· bnlawrence opened on Apr 1, 2026

Chunk index logged as rebuilt on every var access for the same variable

Status: Open.

Bug

#206 In NCAS-CMS/pyfive;

· bnlawrence opened on Mar 22, 2026

HDF5 V2.0

enhancement

Status: Open.

#156 In NCAS-CMS/pyfive;

· bnlawrence opened on Dec 3, 2025

Pyfive VirtualiZarr Parser?

enhancement

Status: Open.

#155 In NCAS-CMS/pyfive;

· TomNicholas opened on Nov 18, 2025

Create a RELEASE.md that gives a checklist of actions needed for a public release

release

Status: Open.

#150 In NCAS-CMS/pyfive;

· davidhassell opened on Nov 13, 2025

Usage of ancient files for testing breaks with recent h5py/libhdf5

Status: Open.

#108 In NCAS-CMS/pyfive;

· kmuehlbauer opened on Oct 1, 2025

·  

V2.0

Scale/Offset (and maybe other?) Filters

enhancement

Status: Open.

#89 In NCAS-CMS/pyfive;

· bnlawrence opened on Aug 21, 2025

·  

V2.0

numpy arrays read from attributes are not writable

Status: Open.

#53 In NCAS-CMS/pyfive;

· kmuehlbauer opened on May 13, 2022

·  

V2.0