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[LDM #DZH-705263]: %N

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  • Subject: [LDM #DZH-705263]: %N
  • Date: Wed, 26 Aug 2009 13:26:06 -0600
Mark,

> > String-replacement based on data-product creation-time uses the strftime(3) 
> > function and, unfortunately, calling that function with a "%N" conversion 
> > specification is non-standard and will result in undefined behavior on some 
> > systems.
> >
> Yes, this is unfortunate.  If my system's strftime() function supports
> the %N, then will LDM also support it automatically?

If your strftime() supports "%N", then you should be able to use it now.

> > Are the product-identifiers of the data-products in question not 
> > sufficiently unique that you can't create unique pathnames?
> >
> That is correct.  Occasionally, we will get so many small products in a
> burst that even though they don't arrive consecutively, they *do* still
> arrive within the same clock second and thus not be unique.  We get
> around this by piping the contents through a script which adds a `date
> +%N` to the back of the filename to ensure uniqueness.  This work-around
> suffices for now, but we had to work at it to make it efficient enough
> not to increase the system's load average.
> 
> Mark


Regards,
Steve Emmerson

Ticket Details
===================
Ticket ID: DZH-705263
Department: Support LDM
Priority: Normal
Status: Closed