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authorQuincey Koziol <koziol@hdfgroup.org>2002-07-19 19:27:09 (GMT)
committerQuincey Koziol <koziol@hdfgroup.org>2002-07-19 19:27:09 (GMT)
commit99eee6dff9a38a1bab3d74b4b77dd8169e57409c (patch)
tree5db3dd6e5ed35a694c655337750dc741e30181fb /release_docs/RELEASE.txt
parent814ea8b962fec329f6a440d1f52f6b682de47524 (diff)
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[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
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diff --git a/release_docs/RELEASE.txt b/release_docs/RELEASE.txt
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@@ -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