Hi, 
I want to use an input file which has lines of sequences in which each line 
(RNA sequence) will be mapped to the mapper (an executable programthat 
determines the secondary structure of each line of sequence). I am also using a 
reducer which concatenates the output linesfrom the mapper. But I have some 
problem that the final output is not sorted in an orderly manner as the input 
sequence (RNA-1,RNA-2,RNA-3....). 
STDIN INPUT FILE : RNA-1                             RNA-2                      
       RNA-3.....
MAPPER 
OutPutMAP1<RNA-2><STRUCTURE-2>MAP2<RNA-1><STRUCTURE-1>MAP3<RNA-3><STRUCTURE-3>REDUCER
 OUTPUT<RNA-2><RNA-1><RNA-3>\t<STRUCTURE-1><STRUCTURE-2><STRUCTURE-3>\n 
OR<RNA-3><RNA-2><RNA-1>\t<STRUCTURE-1><STRUCTURE-2><STRUCTURE-3>\n
and what I am looking is to reduce in the following ordered manner: 
<RNA-1><RNA-2><RNA-3>\t<STRUCTURE-1><STRUCTURE-2><STRUCTURE-3>\nlooking forward 
to your input. 

Regards, 

Daniel T. Yehdego
Computational Science Program 
University of Texas at El Paso, UTEP 
[email protected]                                         

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