Re: No matches were found

On Thu, 17 Mar 2005, Olivier Vautrin wrote:

> It seems that it is not a problem for the configuration files. I tried your 
> suggestion without result.
>
> The behaviour is quite simple to reproduce:
>
> When I use the command: ."/htdig -i -h 3 -v ". the search engine is working 
> well and htsearch also.
> When I use the command: "./htdig -i -v". htsearch give me no result at all 
> ("No matches were found").

Strange. The only difference here would be in the number of files
indexed. According to the database sizes provided below, the dig is not
generating database files large enough to hit any limits.

> The database is not empty:
> su-2.05b# cd /usr/local/share/htdig/database/
> su-2.05b# ls -al
> total 148798
> drwxrwxrwx  2 root  wheel       512 Mar 17 10:32 .
> drwxr-xr-x  4 root  wheel       512 Feb 17 16:31 ..
> -rw-r--r--  1 root  wheel    679936 Mar 17 12:28 db.docdb
> -rwxrwxrwx  1 root  wheel   1376256 Mar 15 18:52 db.docdb.work
> -rw-r--r--  1 root  wheel    180224 Mar 17 12:28 db.docs.index
> -rwxrwxrwx  1 root  wheel    729088 Mar 15 18:52 db.docs.index.work
> -rw-r--r--  1 root  wheel   5251072 Mar 17 12:28 db.excerpts
> -rwxrwxrwx  1 root  wheel   7249920 Mar 15 18:52 db.excerpts.work
> -rw-r--r--  1 root  wheel  47339520 Mar 17 12:28 db.words.db
> -rwxrwxrwx  1 root  wheel  90491904 Mar 15 18:52 db.words.db.work
> -rwxrwxrwx  1 root  wheel     16384 Mar 15 18:52 db.words.db.work_weakcmpr
> -rw-r--r--  1 root  wheel     16384 Mar 17 12:28 db.words.db_weakcmpr
> -rwxrwxrwx  1 root  wheel      9807 Feb 23 15:45 htdex.Bgh1uG
>
> and an htdig with "-vvv" give me no interesting results in the logs...

Have you double and triple checked this? Most of the issues that could
result in corrupt databases (e.g. running out of disk space, running out
of tmp space, network problems, etc.) should show up in the verbose
output.

Have you tried running the htdump program on the database to see if the
databases are even readable by the ht://Dig tools? If that works, you
might want to check the resulting files to ensure that the terms and
documents you are expecting to find are actually present.

> Is there a maximum size for the database?

Yes, but it depends on the version of ht://Dig, the way it is compiled,
and the hardware it is running on. However the first limit you would be
likely to run into is at about 2 GB and you are clearly nowhere near
that based on the numbers above.

Is htsearch running on a machine over which you have full control? If
you are running on a shared server maintained by someone else, it might
be that resource limits have been put in place that limit the amount of
memory/CPU time that CGI's are allowed to consume. I would expect a
server error in this case rather than a "No matches" response, but I am
not sure what else to suggest.

Jim


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