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authorQuincey Koziol <koziol@hdfgroup.org>2003-02-10 17:26:09 (GMT)
committerQuincey Koziol <koziol@hdfgroup.org>2003-02-10 17:26:09 (GMT)
commit24d8506dd564c5cc0fdebb5ebdfaec7bda5a7435 (patch)
tree6b2eb3bb1e782c40718204882428e6471b6281ac /release_docs
parent738661ab9f409b8d961ba1402d6c4dd5f99ecb43 (diff)
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[svn-r6387] Purpose:
Bug Fix Description: Metadata cache in parallel I/O can cause hangs in applications which perform independent I/O on chunked datasets, because the metadata cache can attempt to flush out dirty metadata from only a single process, instead of collectively from all processes. Solution: Pass a dataset transfer property list down from every API function which could possibly trigger metadata I/O. Then, split the metadata cache into two sets of entries to allow dirty metadata to be set aside when a hash table collision occurs during independent I/O. Platforms tested: Tested h5committest {arabica (fortran), eirene (fortran, C++) modi4 (parallel, fortran)} FreeBSD 4.7 (sleipnir) serial & parallel Misc. update: Updated release_docs/RELEASE
Diffstat (limited to 'release_docs')
-rw-r--r--release_docs/RELEASE.txt3
1 files changed, 3 insertions, 0 deletions
diff --git a/release_docs/RELEASE.txt b/release_docs/RELEASE.txt
index 38a5a75..202ca58 100644
--- a/release_docs/RELEASE.txt
+++ b/release_docs/RELEASE.txt
@@ -35,6 +35,9 @@ Bug Fixes since HDF5-1.4.0
Library
-------
+ * Corrected metadata caching bug in parallel I/O which could cause hangs
+ when chunked datasets were accessed with independent transfer mode.
+ QAK - 2003/02/10
* Corrected memory/resource leaks in per-thread key information when
thread-safe operation was enabled. QAK - 2003/02/07
* H5Fopen without the H5F_ACC_CREAT flag should not succeed in creating