XDMF Reader doesn't create vtkIdType arrays out of GlobalID attributes
This issue was created automatically from an original Mantis Issue. Further discussion may take place here.
The current Xdmf2 format supports AttributeType="GlobalID", but the reader doesn't really create a vtkIdTypeArray for ParaView when reading in these attributes -- it creates an int type, so ParaView can't really use this as a Global ID.
(This is at least true when reading "heavy data" from an HDF5 file -- I'm not sure what happens when the data is just specified within the .xmf file as XML data...)
In case it helps, I'm detailing what I see as the major issue, plus an outline of my own hacky solution in the Additional Information.