RELEASE.txt entry for PR HDFGroup#4843 (HDFGroup#4860)

qkoziol · Sep 19, 2024 · b382a8e · b382a8e
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commit b382a8e
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diff --git a/release_docs/RELEASE.txt b/release_docs/RELEASE.txt
@@ -829,6 +829,19 @@ Bug Fixes since HDF5-1.14.0 release
 ===================================
     Library
     -------
+    - Fixed a bug with large external datasets
+
+      When performing a large I/O on an external dataset, the library would only
+      issue a single read or write system call. This could cause errors or cause
+      the data to be incorrect. These calls do not guarantee that they will
+      process the entire I/O request, and may need to be called multiple times
+      to complete the I/O, advancing the buffer and reducing the size by the
+      amount actually processed by read or write each time. Implemented this
+      algorithm for external datasets in both the read and write cases.
+
+      Fixes GitHub #4216
+      Fixes h5py GitHub #2394
+
     - Fixed a bug in the Subfiling VFD that could cause a buffer over-read
       and memory allocation failures