[news.software.b] News article showing up twice ???

rickert@mp.cs.niu.edu (Neil Rickert) (12/05/90)

 Recently a couple of articles showed up twice.  Here is the header from one
example:

-----------------
Xref: mp.cs.niu.edu comp.unix.internals:1378 comp.unix.programmer:644 comp.unix.admin:661 comp.unix.internals:1379
Path: mp.cs.niu.edu!ux1.cso.uiuc.edu!julius.cs.uiuc.edu!wuarchive!cs.utexas.edu!yale!cmcl2!kramden.acf.nyu.edu!brnstnd
From: brnstnd@kramden.acf.nyu.edu (Dan Bernstein)
Newsgroups: comp.unix.internals,comp.unix.programmer,comp.unix.admin,comp.unix.wizards
Subject: Re: Preventing date rollback
Message-ID: <10605:Dec506:58:1790@kramden.acf.nyu.edu>
Date: 5 Dec 90 06:58:17 GMT
References: <RICHARD.90Dec3143525@dataspan.dataspan.UUCP>
Organization: IR
Lines: 7
-----------------

  Notice that both 'comp.unix.internals' and 'comp.unix.wizards' appear in
the 'Newsgroups:' header.  We have wizards aliased to internals.  Apparently
the same article has been linked twice into the same news directory.

  Is this a cnews 'feature' or a bug?

-- 
=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=
  Neil W. Rickert, Computer Science               <rickert@cs.niu.edu>
  Northern Illinois Univ.
  DeKalb, IL 60115.                                  +1-815-753-6940

henry@zoo.toronto.edu (Henry Spencer) (12/06/90)

In article <1990Dec5.155010.22577@mp.cs.niu.edu> rickert@mp.cs.niu.edu (Neil Rickert) writes:
> Recently a couple of articles showed up twice...

Are you sure it was the *same* article showing up twice?  If the Message-ID
header is different, it's a different article, even if the text is the same.

Having two different articles with the same text show up is not particularly
rare; it may indicate problems elsewhere in the net, but the software on your
machine is not broken.  If the same article -- same message-ID -- shows up
twice, then something's wrong on your machine.
-- 
"The average pointer, statistically,    |Henry Spencer at U of Toronto Zoology
points somewhere in X." -Hugh Redelmeier| henry@zoo.toronto.edu   utzoo!henry

rickert@mp.cs.niu.edu (Neil Rickert) (12/06/90)

In article <1990Dec6.000419.7392@zoo.toronto.edu> henry@zoo.toronto.edu (Henry Spencer) writes:
>In article <1990Dec5.155010.22577@mp.cs.niu.edu> rickert@mp.cs.niu.edu (Neil Rickert) writes:
>> Recently a couple of articles showed up twice...
>
>Are you sure it was the *same* article showing up twice?  If the Message-ID
>header is different, it's a different article, even if the text is the same.
>
 It was the ***same*** article.  Same contents.  Same Message-ID.  Same
inode number.  Same line in the history file.  Both copies listed on the
'Xref:' header that I enclosed in my original report.

 I know it did not take more disk space.  But it is still an annoyance to
news readers.  Maybe the problem is rare enough to not be worth dealing
with.  I was just reporting it.

-- 
=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=
  Neil W. Rickert, Computer Science               <rickert@cs.niu.edu>
  Northern Illinois Univ.
  DeKalb, IL 60115.                                  +1-815-753-6940

henry@zoo.toronto.edu (Henry Spencer) (12/08/90)

In article <1990Dec6.151202.12961@mp.cs.niu.edu> rickert@mp.cs.niu.edu (Neil Rickert) writes:
> It was the ***same*** article.  Same contents.  Same Message-ID.  Same
>inode number.  Same line in the history file.  Both copies listed on the
>'Xref:' header that I enclosed in my original report.

Oops, I didn't look closely enough.  Right you are.  The "=" feature of
the C News sys file does not attempt to strip out duplicates from the
list of newsgroups that results.  One can argue about whether this is
a feature or a bug.  Geoff doesn't seem to feel it's worth fixing.
-- 
"The average pointer, statistically,    |Henry Spencer at U of Toronto Zoology
points somewhere in X." -Hugh Redelmeier| henry@zoo.toronto.edu   utzoo!henry