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Full Discussion: Honey, I broke awk! (duplicate line removal in 30M line 3.7GB csv file)
Top Forums Shell Programming and Scripting Honey, I broke awk! (duplicate line removal in 30M line 3.7GB csv file) Post 302894691 by Michael Stora on Wednesday 26th of March 2014 06:20:47 PM
Old 03-26-2014
Thanks for all the suggestions. My workaround so far has been to skip the duplicate line removal and add it to the querries I run against the database instead. This has allowed me to procede with my analysis.

I will go back and fix the database at some point however when the current deadline passes.

I will have to check closely which fields alone can indicate a duplicate record. Since the addition of a column (and therefore the length of $0) is what broke it, taking something out may help. I'm not sure as I am already taking the important columns from two types of database files and the "housekeeping columns" are not included.

Is there a way to do a checksum or fairly robust hash in awk? That might be the best way to shorten the array names which appears to what is killing awk.

Mike

PS. I would love to be using real Linux instead of Cygwin (as I do at home). Unfortunately that is a boundary condition.
Last edited by Michael Stora; 03-26-2014 at 08:03 PM..
 

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LEARN ABOUT CENTOS

processcsv.py

PROCESSCSV.PY(1)					      Virtualization Support						  PROCESSCSV.PY(1)

NAME

       processcsv.py - process virt-top CSV files

SUMMARY

	virt-top --csv data.csv
	processcsv.py < data.csv

DESCRIPTION

       virt-top is a top(1)-like utility for showing stats of virtualized domains.

       processcsv.py is a simple Python script that post-processes the output of "virt-top --csv".

       It is used like this:

	virt-top --csv data.csv
	processcsv.py < data.csv

       The second command will overwrite the following files in the current directory:

       "global.csv"
	   This contains the global (host) statistics columns from the CSV file.

       "domainNN.csv" (multiple files)
	   For each libvirt domain ID NN, a file is created containing the per-domain statistics from the CSV file.

SEE ALSO

       virt-top(1)

AUTHORS

       Richard W.M. Jones <rjones @ redhat . com>

COPYRIGHT

       (C) Copyright 2007-2012 Red Hat Inc., Richard W.M. Jones http://libvirt.org/

       This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by
       the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

       This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.

       You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation,
       Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

virt-top-1.0.8							    2013-12-29							  PROCESSCSV.PY(1)
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