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| author | Quincey Koziol <koziol@hdfgroup.org> | 2002-07-19 19:27:09 (GMT) |
|---|---|---|
| committer | Quincey Koziol <koziol@hdfgroup.org> | 2002-07-19 19:27:09 (GMT) |
| commit | 99eee6dff9a38a1bab3d74b4b77dd8169e57409c (patch) | |
| tree | 5db3dd6e5ed35a694c655337750dc741e30181fb /release_docs | |
| parent | 814ea8b962fec329f6a440d1f52f6b682de47524 (diff) | |
| download | hdf5-99eee6dff9a38a1bab3d74b4b77dd8169e57409c.zip hdf5-99eee6dff9a38a1bab3d74b4b77dd8169e57409c.tar.gz hdf5-99eee6dff9a38a1bab3d74b4b77dd8169e57409c.tar.bz2 | |
[svn-r5814] Purpose:
Bug Fix
Description:
It was possible to create corrupted metadata information (either in memory
or in the file or both) with a parallel I/O program because of the way
metadata writes were being handled for writes out of the metadata cache.
Solution:
Added a dataset transfer property called "block before metadata write"
which is used by the MPI-I/O and MPI-posix drivers to sync up all the
processes before attempting a metadata write. This property is currently
only for metadata writes from the metadata cache.
Platforms tested:
IRIX64 6.5 (modi4) w/parallel
Diffstat (limited to 'release_docs')
| -rw-r--r-- | release_docs/RELEASE.txt | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/release_docs/RELEASE.txt b/release_docs/RELEASE.txt index 78b03b1..795a0bb 100644 --- a/release_docs/RELEASE.txt +++ b/release_docs/RELEASE.txt @@ -35,21 +35,23 @@ Bug Fixes since HDF5-1.4.0 Library ------- + * Fixed metadata corruption problem which could occur when many objects + are created in a file during parallel I/O. QAK - 2002/07/19 * Fixed VL memory leak when data is overwritten. The heap objects holding old data are freed. If the fill value writting time is set to H5D_FILL_TIME_NEVER, the library prohibits user to create VL type dataset. The library free all the heap objects storing VL type if there is nested - VL type(a VL type contains another VL type). SLU 2002/07/10 + VL type(a VL type contains another VL type). SLU - 2002/07/10 * Fixed bug in parallel I/O routines where a collective I/O which used MPI derived types, followed by an independent I/O would cause the library - to hang. QAK 2002/06/24 + to hang. QAK - 2002/06/24 * Fixed bug in chunking routines where they were using internal allocation free routines, instead of malloc/free, preventing user filters from working correctly. Chunks are now allocated/freed with malloc/free and - so should the chunks in user filters. QAK 2002/06/18 + so should the chunks in user filters. QAK - 2002/06/18 * Fixed bug where regular hyperslab selection could get incorrectly transferred when the number of elements in a row did not fit evenly - into the buffer provided. QAK 2002/06/12 + into the buffer provided. QAK - 2002/06/12 * Fixed bug (#499) which allowed an "empty" compound or enumerated datatype (one with no members) to be used to create a dataset or committed to a file. QAK - 2002/06/11 |