Release of HDF5-1.10.0-pre1
===========================

The HDF5-1.10.0-pre1 release is now available.

We would highly appreciate any feedback regarding it, as we will be releasing
HDF5-1.10.0 at the end of March. PLEASE be aware that when building HDF5 the
SWMR feature is on by default. You must be on a local file system or a parallel
file system like GPFS to use the SWMR feature, as it requires write ordering
to be preserved. Most network file systems (NFS, SMB/Windows file share, etc.)
do not guarantee write ordering.

The HDF5-1.10.0-pre1 release can be obtained from The HDF Group Downloads page:

  https://www.hdfgroup.org/downloads/

It can also be obtained directly from:

  https://www.hdfgroup.org/HDF5/release/obtain5110.html

New Features in this release are described here:

  https://www.hdfgroup.org/HDF5/release/obtain5110.html#newfeat

The release notes include complete details on what is new in this release:

  https://www.hdfgroup.org/ftp/HDF5/releases/hdf5-1.10/hdf5-1.10.0-pre1/src/hdf5-1.10.0-pre1-RELEASE.txt

HDF5-1.10.0-pre1 contains the following changes as well as those included in
the alpha0 and alpha1 releases:

o Integration of Java HDF5 JNI into HDF5

  The Java HDF5 JNI library has been integrated into the HDF5 source code repository.
  The configure option "--enable-java" has been added to build HDF5 with Java.
  The CMake option is HDF5_BUILD_JAVA:BOOL=ON.

  In addition, the package hierarchy has changed to "hdf.hdflib.hdf5" from
  "ncsa.hdf.hdflib.hdf5", as it was in the HDF5-1.8 JNI.

  Several new APIs have also been added, including those for VDS and SWMR.

o Many changes have been made to the HDF5 configuration, including:
   
  - The --with-default-api-version=v18 configure flag has been added to build
    HDF5-1.10 using the HDF5-1.8 APIs.

  - The autotools configuration options have been updated to allow more control over
    build options and to correct some bugs.

  - Changes were made in how autotools handles large file support (LFS).

HDF5-1.10-0-alpha1 included these features:

o The HDF5 Collective Metadata I/O feature
o A fix for the h5format_convert tool

HDF5-1.10-0-alpha0 included these features:

o Concurrent Access to an HDF5 File: Single Writer / Multiple Reader (SWMR)
o Virtual Dataset (VDS)
o Scalable Chunking indexing
o Persistent Free File Space Tracking

See the release notes for complete details on what is included in this release:

  https://www.hdfgroup.org/ftp/HDF5/releases/hdf5-1.10/hdf5-1.10.0-pre1/src/hdf5-1.10.0-pre1-RELEASE.txt