Update atomic fs writer to delay tempfile creation until Write() is called #3044
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Reason for Change:
The atomic fs writer currently opens the tempfile when it is instantiated. This can lead to many tempfiles being created if CNS fails during initiliazation.
This moves the tempfile creation in to the Write() method, so early exits after initialization will not clutter up the host filesystem with empty tempfiles.
Issue Fixed:
Requirements:
Notes: