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authorJan-Willem Blokland <Jan-Willem.Blokland@Shell.com>2021-09-13 20:05:19 (GMT)
committerGitHub <noreply@github.com>2021-09-13 20:05:19 (GMT)
commit7c973deaf1e602cf165a39860e574a9b5468d164 (patch)
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H5Ztrans: (feature) Improved H5Z_xform_noop() and H5Z_xform_create() … (#933)
* H5Ztrans: (feature) Improved H5Z_xform_noop() and H5Z_xform_create() function - Made a small improvement for H5Z_xform_noop() function. Now, the function will also return TRUE if the data transform function expression = "x". For this case, the HDF5 library behaves in a similar fashion as the case when no data transform function has been specified. - Improved the inline documentation of the function H5Z_xform_create() such it is more inline with the rest of the code. * Committing clang-format changes * H5Ztrans: (feature) Added 3 tests for improved H5Z_xform_noop() function - Added serial test with data transform expression = "x" to verify the improved H5Z_xform_noop() function behaves as expected. - Added 2 parallel tests with data transform expression = "x" in combination with a filter. Before, these tests will fail but with the improved H5Z_xform_noop() function they work and result in the expected behavior. - Small bug fix for one of parallel filter tests. * Committing clang-format changes * H5Ztrans: (feature) Added release note about detection of the simple data transform function "x". - Added a brief explanation about the implemented improvement of the detection of the simple data transform function "x" to the RELEASE.txt file. Co-authored-by: github-actions <41898282+github-actions[bot]@users.noreply.github.com>
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diff --git a/release_docs/RELEASE.txt b/release_docs/RELEASE.txt
index 7ccb9ad..66907be 100644
--- a/release_docs/RELEASE.txt
+++ b/release_docs/RELEASE.txt
@@ -935,6 +935,17 @@ Bug Fixes since HDF5-1.12.0 release
===================================
Library
-------
+ - Detection of simple data transform function "x"
+
+ In the case of the simple data transform function "x" the (parallel)
+ library recognizes this is the same as not applying this data transform
+ function. This improves the I/O performance. In the case of the parallel
+ library, it also avoids breaking to independent I/O, which makes it
+ possible to apply a filter when writing or reading data to or from
+ teh HDF5 file.
+
+ (JWSB - 2021/09/13)
+
- Fixed an invalid read and memory leak when parsing corrupt file space
info messages