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-rw-r--r--release_docs/RELEASE.txt63
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diff --git a/release_docs/RELEASE.txt b/release_docs/RELEASE.txt
index 872bced..c022d73 100644
--- a/release_docs/RELEASE.txt
+++ b/release_docs/RELEASE.txt
@@ -34,6 +34,7 @@ CONTENTS
- New Features
- Support for new platforms and languages
+- Bug Fixes since HDF5-1.10.3
- Bug Fixes since HDF5-1.10.2
- Supported Platforms
- Tested Configuration Features Summary
@@ -229,6 +230,68 @@ Support for new platforms, languages and compilers.
=======================================
-
+Bug Fixes since HDF5-1.10.3 release
+==================================
+
+ Library
+ -------
+ - A bug was discovered in the parallel library where an application
+ would hang if a collective read/write of a chunked dataset occurred
+ when collective metadata reads were enabled and some of the ranks
+ had no selection in the dataset's dataspace. The ranks which had no
+ selection in the dataset's dataspace called H5D__chunk_addrmap() to
+ retrieve the lowest chunk address in the dataset. This is because we
+ require reads/writes to be performed in strictly non-decreasing order
+ of chunk address in the file.
+
+ When the chunk index used was a version 1 or 2 B-tree, these
+ non-participating ranks would issue a collective MPI_Bcast() call
+ that the participating ranks would not issue, causing the hang. Since
+ the non-participating ranks are not actually reading/writing anything,
+ the H5D__chunk_addrmap() call can be safely removed and the address used
+ for the read/write can be set to an arbitrary number (0 was chosen).
+
+ (JTH - 2018/08/25, HDFFV-10501)
+
+ Configuration
+ -------------
+ -
+
+ Performance
+ -------------
+ -
+
+ Fortran
+ --------
+ -
+
+ Tools
+ -----
+ -
+
+ High-Level APIs:
+ ------
+ -
+
+ Fortran High-Level APIs:
+ ------
+ -
+
+ Documentation
+ -------------
+ -
+
+ F90 APIs
+ --------
+ -
+
+ C++ APIs
+ --------
+ -
+
+ Testing
+ -------
+
Bug Fixes since HDF5-1.10.2 release
==================================