Hi George,
flock() is used to manage concurrent index updating. It's
used since it's available on all systems. That's the only
reason to use it instead of something else (ex. Semaphore,
Shared Memory and IPC Functions extension).
I don't have universal solution for this now, but could try
to make it for your environment.
Can you enable semaphores (compile php with the
--enable-sysvsem option) for your php installation?
With best regards,
Alexander Veremyev.
> -----Original Message-----
> From: gherson [mailto:gherson snet.net]
> Sent: Thursday, January 03, 2008 5:46 PM
> To: fw-formatslists.zend.com
> Subject: Re: [fw-formats] possible index corruption
>
>
> Thanks, Johannes. You found the problem. I'd read the
limitations but
> hadn't studied them carefully enough. From your link:
>
> '29.2.7.2. Supported Filesystems
>
> 'Zend_Search_Lucene uses flock() to provide concurrent
searching, index
> updating and optimization.
>
> 'According to the PHP documentation, "flock() will
not work on NFS and
> many
> other networked file systems".
>
> 'Do not use networked file systems with
Zend_Search_Lucene.'
>
> http:
//us2.php.net/manual/en/function.flock.php says
"When using a
> multithreaded server API like ISAPI you may not be able
to rely on flock()
> to protect files against other PHP scripts running in
parallel threads of
> the same server instance!"
>
> One of the two web servers involved in my testing has
an ISAPI, not an
> Apache2, server API.
>
> Question: is there any way to use Zend_Search_Lucene
on a server whose
> api
> is ISAPI?
>
> thank you,
> George Herson
>
>
> Johannes Schmidt-4 wrote:
> >
> > Hi George,
> >
> > it's just a (fast) guess:
> > http://framework.zend.com/manual/en/zend.search.luc
ene.index-
>
creation.html#zend.search.lucene.index-creation.limitations
> >
> > Regards,
> > Johannes
> >
> > gherson wrote:
> >> I'm developing a Zend_Search_Lucene-powered
text search feature for my
> >> intranet. I'm currently rebuilding my index
~daily to get past
> symptoms:
> >>
> >> 1. Luke becomes unable to open the index,
instead returning, e.g.,
> >>
"\storage01Store_01Sites_02INDEXESMainIndex_l.cfs
(The system
> >> cannot
> >> find the file specified)".
> >>
> >> 2. Line
> >>
Zend_Search_Lucene::open("$IndexPath/MainIndex");
> >> hangs.
> >>
> >> If I had to guess I'd say my problem starts
when >1 PHP scripts try
> >> accessing the index simultaneously (which I
read is allowed).
> >>
> >> The only thing special before the index open
command is
> >>
Zend_Search_Lucene_Analysis_Analyzer::setDefault(new
> >>
Zend_Search_Lucene_Analysis_Analyzer_Common_TextNum_CaseInse
nsitive());
> >>
> >> Platform is WinXP Pro, PHP Version 5.2.4,
"Apache/2.2.6 (Win32) DAV/2",
> >> Zend
> >> Framework 1.0.2.
> >>
> >> TIA,
> >> George Herson
> >
> >
>
> --
> View this message in context: http://www.nabb
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> corruption-tp14587058s16154p14598127.html
> Sent from the Zend MFS mailing list archive at
Nabble.com.
>
>
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