[Swift-user] How can one force ordering into swift operations

[Daniel S. Katz]

you could just add an artificial dependency.  Make step out output file "flag" when it is done.

Make step 2 dependent on file "flag"

Dan


On Jan 24, 2013, at 11:13 AM, Lorenzo Pesce <lpesce at uchicago.edu> wrote:

> So that I return an array of files of unknown size (don't know how many files they will be) to the calling swift script?
> 
> 
> On Jan 24, 2013, at 10:08 AM, Glen Hocky wrote:
> 
>> Lorenzo,
>> This may not work for your purposes, but a simple solution similar to what I do, is to actually do step 1 in the wrapper before the mapping is done. This guarantees that all files are in place.
>> 
>> Best,
>> Glen
>> 
>> 
>> On Thu, Jan 24, 2013 at 10:43 AM, Lorenzo Pesce <lpesce at uchicago.edu> wrote:
>> I have a simple problem:
>> step 1: I run an app that splits a file in a group of files and we don't know how many they are.
>> step2: I want to map those files using a mapper after the fact
>> 
>> Problem is that the mapper doesn't know that it can't run till step 1 is done because it has no input files. How can I tell the mapper (and what follows it by consequence since those files will not be there) that it has to wait for step 1 to b finished?
>> 
>> Thanks,
>> 
>>  Lorenzo
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> 
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-- 
Daniel S. Katz
University of Chicago
(773) 834-7186 (voice)
(773) 834-6818 (fax)
d.katz at ieee.org or dsk at ci.uchicago.edu
http://www.ci.uchicago.edu/~dsk/




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