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[bug-gawk] Memory leak

From: Stephane Delsert
Subject: [bug-gawk] Memory leak
Date: Mon, 27 Mar 2017 14:42:28 +0000



We hit a memory leak with gawk for the joined script. This script sorts a file already sorted on primary keys for additional keys. For achieve this I used a user defined function and set this function as follow :the  PROCINFO["sorted_in"]="__sort_subsort"

We noticed a growth of memory required by gawk with the increase of the processed records. Gawk  ended after over 320 MM of records. The memory size was over 20Gb. A post analysis shown that the maximum size of the tables of the script was 121 elements.

I made different tests and it appears that this issue doesn’t arrive when I don’t use PROCINFO mechanism. For little files, this script works correctly.


I didn’t see this kind of bug in the bug reports. I made tests with version 4.1.3 and version 4.1.4 without success.


Thank you for your help.


Best regards,


St├ęphane Delsert.


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