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Re: PSPP-BUG: "ERROR I/O" on a large database on version 0.7.9 Win7 bina

From: John Darrington
Subject: Re: PSPP-BUG: "ERROR I/O" on a large database on version 0.7.9 Win7 binary
Date: Fri, 8 Jun 2012 10:33:26 +0000
User-agent: Mutt/1.5.18 (2008-05-17)

On Thu, Jun 07, 2012 at 09:10:59PM +0000, Gong, Henry wrote:
     So I did find some time to run a few more trials today. I found all the 
files this time. Here are the temp file sizes:
         0    57,278,464 bytes
         1    55,245,981 bytes
         0    112,525,445 bytes
         1    112,525,312 bytes
     They seem to alternate between states A and B (deleting old buffer 
space?), and I haven't seen the files listed at any other size.
     File 1 disappears after LIST finishes running, and file 0 settles on size 
A0. The folder is deleted when pspp exits, as expected.
     There is another bit of syntax at the end of the file I didn't see before:
     src/libpspp/temp-file.c:132 Closing and removing tempfile 
C:\Users\User\AppData\Local\Temp/psppORdnSM/1 000007FEFF612BA0
     which, I think, is expected according to the deletion of file 1. Why file 
0 isn't deleted then I don't know.

OK.  So far, we don't seem to have got much information except:

1. There seems to be no problem creating temp files, but sometimes there 
   are problems writing to them, once the size gets above ~54 MB.

2. It isn't related to off_t overflowing like I had thought perhaps was the 
     I also checked the <> and it's definitely there on every trial.

This is very odd.  Harry did you change my () to <> before you applied the 

I'll produce another patch at the weekend to spit out some diagnostics at a 
lower level.


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