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We have come upon this unpleasant rename/tempfilename problem too long. It is time to fix it. The problem is related to netcdf using a different location to create a temporary file. It thinks this temporary area is in the same filesystem as the desired output file. The simplistic fix is to catch the rename error and fall back on a copy and delete. A better fix is to more accurately determine the appropriate directory for a temporary file. This latter problem is a bit messy and less easy to generalize for each platform. The simplistic first part of the fix should be put in now.
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