diff options
author | jhendersonHDF <jhenderson@hdfgroup.org> | 2023-08-02 22:46:52 (GMT) |
---|---|---|
committer | GitHub <noreply@github.com> | 2023-08-02 22:46:52 (GMT) |
commit | a77d8bfcd7d066c6759b0346c02cbd612f90b7c2 (patch) | |
tree | 9645e8afaf0a171dd4b5cb7b38306e92039aa0ba /release_docs | |
parent | f2ba867b58f22809af3dfb2d087c700587835359 (diff) | |
download | hdf5-a77d8bfcd7d066c6759b0346c02cbd612f90b7c2.zip hdf5-a77d8bfcd7d066c6759b0346c02cbd612f90b7c2.tar.gz hdf5-a77d8bfcd7d066c6759b0346c02cbd612f90b7c2.tar.bz2 |
Fix h5repack for variable-length datatyped datasets (#3331) (#3333)
Diffstat (limited to 'release_docs')
-rw-r--r-- | release_docs/RELEASE.txt | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/release_docs/RELEASE.txt b/release_docs/RELEASE.txt index aa48654..b226664 100644 --- a/release_docs/RELEASE.txt +++ b/release_docs/RELEASE.txt @@ -184,7 +184,21 @@ Bug Fixes since HDF5-1.14.1 release Tools ----- - - + - Fixed an issue in h5repack for variable-length typed datasets + + When repacking datasets into a new file, h5repack tries to determines whether + it can use H5Ocopy to copy each dataset into the new file, or if it needs to + manually re-create the dataset, then read data from the old dataset and write + it to the new dataset. H5repack was previously using H5Ocopy for datasets with + variable-length datatypes, but this can be problematic if the global heap + addresses involved do not match exactly between the old and new files. These + addresses could change for a variety of reasons, such as the command-line options + provided to h5repack, how h5repack allocate space in the repacked file, etc. + Since H5Ocopy does not currently perform any translation when these addresses + change, datasets that were repacked with H5Ocopy could become unreadable in the + new file. H5repack has been fixed to repack variable-length typed datasets without + using H5Ocopy to ensure that the new datasets always have the correct global heap + addresses. Performance |