Refreshes all buffers associated with a committed datatype
herr_t H5Trefresh(hid_t dtype_id)
IN: Identifier of the committed datatype to be refreshed
H5T_REFRESH causes all buffers associated with a committed datatype to be cleared and immediately re-loaded with updated contents from disk. This function essentially closes the datatype, evicts all metadata associated with it from the cache, and then re-opens the datatype. The reopened datatype is automatically re-registered with the same identifier.
Returns a non-negative value if successful; otherwise returns a negative value.