Re: [netcdfgroup] Accessing a NetCDF and HDF5 file at the same time corrupts the HDF file

• To: Oliver Lemke <olemke@xxxxxx>
• Subject: Re: [netcdfgroup] Accessing a NetCDF and HDF5 file at the same time corrupts the HDF file
• From: Ed Hartnett <ed@xxxxxxxxxxxxxxxx>
• Date: Fri, 22 Oct 2010 08:40:31 -0600

Oliver Lemke <olemke@xxxxxx> writes:

> Hi,
>
> I'm trying to write to a NetCDF file and an HDF5 file at the same time. When 
> I call nc_close() the HDF5 file identifier gets corrupted:
>
> #include <netcdf.h>
> #include <hdf5.h>
>
> #define H5_FILE "test.h5"
> #define NC_FILE "test.nc"
>
> int main (void)
> {
>   hid_t h5file;
>   int ncid;
>
>   h5file = H5Fcreate(H5_FILE, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
>
>   nc_create (NC_FILE, NC_CLOBBER, &ncid);
>   nc_close (ncid);
>
>   /** Code to write data to the HDF5 file removed for simplicity **/
>
>   H5Fclose (h5file);
>   return 0;
> }
>
> Using NetCDF 4.1.1 and HDF5 1.8.5, I get the following error when calling 
> H5Fclose and the resulting HDF file is empty:
>
> HDF5-DIAG: Error detected in HDF5 (1.8.5) thread 0:
>   #000: H5F.c line 1943 in H5Fclose(): invalid file identifier
>     major: Invalid arguments to routine
>     minor: Inappropriate type
>
> Calling H5Fclose() _before_ nc_close() makes the problem go away. The problem 
> also does not occur when linking against NetCDF 3.6.3. Is this possibly a bug 
> in nc_close()?
>
> Any help appreciated.
>
> /oliver
>

Howdy Oliver!

Can you try the latest netCDF snapshot release and tell me if this goes
away?

ftp://ftp.unidata.ucar.edu/pub/netcdf/snapshot/netcdf-4-daily.tar.gz

Thanks,

Ed
-- 
Ed Hartnett  -- ed@xxxxxxxxxxxxxxxx

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    • From: Oliver Lemke

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  • [netcdfgroup] Accessing a NetCDF and HDF5 file at the same time corrupts the HDF file
    • From: Oliver Lemke