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-rw-r--r--release_docs/RELEASE.txt13
1 files changed, 13 insertions, 0 deletions
diff --git a/release_docs/RELEASE.txt b/release_docs/RELEASE.txt
index f9547f3..b861914 100644
--- a/release_docs/RELEASE.txt
+++ b/release_docs/RELEASE.txt
@@ -362,6 +362,19 @@ Bug Fixes since HDF5-1.10.3 release
Library
-------
+ - Fixed the slowness of regular hyperslab selection in a chunked dataset
+
+ It was reported that the selection of every 10th element from a 20G
+ chunked dataset was extremely slow and sometimes could hang the system.
+ The problem was due to the iteration and the building of the span tree
+ for all the selected elements in file space.
+
+ As the selected elements are going to a 1-d contiguous single block
+ memory space, the problem was fixed by building regular hyperslab selections
+ in memory space for the selected elements in file space.
+
+ (VC - 2019/09/26, HDFFV-10585)
+
- Fixed a bug caused by bad tag value when condensing object header
messages