unit.file.WriteDataFile doesn't fully flush

[edA-qa]

The unit.file.WriteDataFile function is intended to flush after each record is written. flush() is called in the code, but it appears Java has a different opinion of what flush is, just flushing internal buffers, not actually the backing file. Now seriously, who would want such a stupid behaviour? It looks like they claim the OS is doing this, but several other programs has no problem flushing on demand.

Figure out what is preventing the proper flush and fix it if possible.

[edA-qa (eda-qa)]

Related
http://alan.blog-city.com/printwriter.htm

Can't find much in the sun bug database, but it is clear that .flush is not flushing as expected.