[Mediawiki-l] Strange problem with search

Jack Eapen C jackec at suntecgroup.com
Wed Jun 18 04:16:55 UTC 2008 


I don't have words to express my thanks for your kind help.

It worked perfectly! Great! 

So is there anyway to repair the db and keep the code unchanged? How to
rebuid the search index?

Regards

Jack 

-----Original Message-----
From: mediawiki-l-bounces at lists.wikimedia.org
[mailto:mediawiki-l-bounces at lists.wikimedia.org] On Behalf Of Jim Hu
Sent: Tuesday, June 17, 2008 11:39 PM
To: MediaWiki announcements and site admin list
Subject: Re: [Mediawiki-l] Strange problem with search

I suspect that something at some point messed up the database, perhaps
by some extension (or db user) deleting a page without properly  
cleaning up.   The revision that isn't being created (returning null,  
I believe, due to not finding the page) shouldn't happen unless
searchengine thinks there's a hit.

Did you try rebuilding the searchindex?

You can also probably patch around it with the following kludge (I'm
sure others have better suggestions)

change those lines to:

	$revision = Revision::newFromTitle( $t );
	$text = '';
	if (is_object($revision)) $text = $revision->getText();


Jim

On Jun 16, 2008, at 2:03 AM, Jack Eapen C wrote:

>
>
> Hi,
>
> If I put "transaction" in the title and calling that page no probs.  
> I'm
> getting a usual page saying that the required page doesn't exisit and 
> whether I want to creat that.
>
> Now I really removed all my extensions from localsettings.php and then

> I get one error message on screen "Fatal error: Call to a member 
> function
> getText() on a non-object in D:\Program Files\EasyPHP 
> 2.0b1\www\sunwiki\includes\SpecialSearch.php on line 335"
>
> The lines 334 and 335 are
> 		$revision = Revision::newFromTitle( $t );
> 		$text = $revision->getText();
>
> This is coming only for the problem words..all other things are 
> qorking fine
>
> Error log is not showing much:
>
> Fully initialised
> Unstubbing $wgMessageCache on call of $wgMessageCache->getTransform 
> from wfMsgGetKey Unstubbing $wgContLang on call of 
> $wgContLang->getCode from MessageCache::get Unstubbing $wgLoadBalancer

> on call of $wgLoadBalancer->getConnection from wfGetDB
> MessageCache::load(): got from global cache
> Language::loadLocalisation(): got localisation for en from source 
> Unstubbing $wgParser on call of $wgParser->firstCallInit from 
> MessageCache::transform Unstubbing $wgUser on call of 
> $wgUser->isAllowed from Title::userCanRead Unstubbing $wgLang on call 
> of $wgLang->getCode from MessageCache::get
> IP: 192.168.62.1
> Would search with '+transaction'
> Match with /\btransaction\b/
> Would search with '+transaction'
> Match with /\btransaction\b/
>
>
> Regards,
>
> Jack
> ----------------------------------------------------------------
> "May He protect us both. May He cause us both to enjoy.May we exert 
> together. May our studies become brilliant. May we not hate each 
> other"
>
>
> -----Original Message-----
> From: mediawiki-l-bounces at lists.wikimedia.org
> [mailto:mediawiki-l-bounces at lists.wikimedia.org] On Behalf Of Jim Hu
> Sent: Friday, June 13, 2008 9:51 PM
> To: MediaWiki announcements and site admin list
> Subject: Re: [Mediawiki-l] Strange problem with search
>
> This is very strange.  The white screen of death should have left 
> something in the error log after the search for "transaction".  This 
> log also shows that you still have searchsuggest extension on.  At 
> this point, my inclination is to
> 1) do the diagnosis with all the extensions off, since you say that 
> "transaction" is still crashing the wiki even with all of them off.
> 2) put something in LocalSettings that would cause a runtime error 
> just to make sure the logging is working.
> 3) test what happens if you put "transaction" as in the URL as if it 
> was a page title.
> I might do these in reverse order, actually.
>
> Sorry I can't be more helpful...
>
> Jim
>
> On Jun 13, 2008, at 1:11 AM, Jack Eapen C wrote:
>
>>
>> Hi,
>>
>> I stopped my apache cleared the error log and restarted. Then I 
>> directly called the search url with 'transaction' as keyword and got 
>> the blank screen. Then I called the url with 'transaction backout' as

>> the keyword and got the search results. The error log contents is
>> below:
>>
>> [Fri Jun 13 11:32:24 2008] [notice] Apache/2.2.3 (Win32) PHP/5.2.0 
>> configured -- resuming normal operations [Fri Jun 13 11:32:24 2008] 
>> [notice] Server built: Jul 27 2006 16:49:49 [Fri Jun 13 11:32:24 
>> 2008]
>
>> [notice] Parent: Created child process 4336 [Fri Jun 13 11:32:24 
>> 2008]
>
>> [notice] Child 4336: Child process is running [Fri Jun 13 11:32:24 
>> 2008] [notice] Child 4336: Acquired the start mutex.
>> [Fri Jun 13 11:32:24 2008] [notice] Child 4336: Starting 250 worker 
>> threads.
>> [Fri Jun 13 11:32:24 2008] [notice] Child 4336: Starting thread to 
>> listen on port 80.
>> [Fri Jun 13 11:32:52 2008] [error] [client 192.168.62.1] File does 
>> not
>> exist: D:/Program Files/EasyPHP
>> 2.0b1/www/sunwiki/extensions/searchsuggest/style.css, referer:
>> http://sbsws469/sunwiki/?search=transaction+backout&fulltext=Search
>>
>>
>> I commented out all my extensions and tried, but in vain.
>>
>> As I said earlier, the search is not failing on all the words, but 
>> only on some words. That's making this problem worse.. :)
>>
>> Regards,
>>
>> Jack
>> ----------------------------------------------------------------
>> "May He protect us both. May He cause us both to enjoy.May we exert 
>> together. May our studies become brilliant. May we not hate each 
>> other"
>>
>>
>> -----Original Message-----
>> From: mediawiki-l-bounces at lists.wikimedia.org
>> [mailto:mediawiki-l-bounces at lists.wikimedia.org] On Behalf Of Jim Hu
>> Sent: Thursday, June 12, 2008 9:15 PM
>> To: MediaWiki announcements and site admin list
>> Subject: Re: [Mediawiki-l] Strange problem with search
>>
>> Um... which logfile are you getting this from?  I was wondering more 
>> about the httpd error log and expecting a php message like: FATAL
>> ERROR: something or other on line X in something.php.
>>
>> Also, is the white screen of death dependent on any extensions?  I 
>> recently found one with one of my extensions (PagesOnDemand/ 
>> PMIDonDemand - I wrote the latter, so it's my fault!) where a failure

>> condition didn't check to see whether creation of an article object 
>> had succeeded, followed by trying to call a method on a non-object.
>> I'm wondering if either
>> a) and extension is sensitive to the specific page names that cause 
>> the crash or
>> b) database damage is leading to failure to create a page that MW 
>> thinks is there, but which doesn't have the right database entries.
>> That usually doesn't give the white screen of death, though.
>>
>> Jim
>>
>> On Jun 11, 2008, at 4:18 AM, Jack Eapen C wrote:
>>
>>>
>>>
>>> I'm getting a "white screen of death". Here's the info from log
>>> file:
>>>
>>> Main cache: FakeMemCachedClient
>>> Message cache: MediaWikiBagOStuff
>>> Parser cache: MediaWikiBagOStuff
>>> Unstubbing $wgParser on call of $wgParser->setHook from wfFlashMP3 
>>> Unstubbing $wgMessageCache on call of $wgMessageCache->addMessages 
>>> from efNewestPages Unstubbing $wgContLang on call of 
>>> $wgContLang->getMagic from MagicWord::load Unstubbing $wgLang on 
>>> call
>
>>> of $wgLang->getCode from smwfInitMessages Unstubbing $wgUser on call

>>> of $wgUser->getOption from StubUserLang::_newObject
>>> Language::loadLocalisation(): got localisation for en from source 
>>> Unstubbing $wgLoadBalancer on call of $wgLoadBalancer->getConnection

>>> from wfGetDB
>>> IP: 192.168.62.1
>>> MessageCache::load(): got from global cache Unstubbing $wgOut on 
>>> call
>
>>> of $wgOut->addScript from TreeView4::addJS Fully initialised Request

>>> ended normally
>>>
>>>
>>> Start request
>>> GET /sunwiki/?search=transaction&fulltext=Search
>>> Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, 
>>> application/x-shockwave-flash, */*
>>> Referer: http://sbsws469/sunwiki/?title=Main_Page
>>> Accept-Language: en-us
>>> Accept-Encoding: gzip, deflate
>>> User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; 
>>> .NET CLR 1.1.4322)
>>> Host: sbsws469
>>> Connection: Keep-Alive
>>>
>>>
>>> Main cache: FakeMemCachedClient
>>> Message cache: MediaWikiBagOStuff
>>> Parser cache: MediaWikiBagOStuff
>>> Unstubbing $wgParser on call of $wgParser->setHook from wfFlashMP3 
>>> Unstubbing $wgMessageCache on call of $wgMessageCache->addMessages 
>>> from efNewestPages Unstubbing $wgContLang on call of 
>>> $wgContLang->getMagic from MagicWord::load Unstubbing $wgLang on 
>>> call
>
>>> of $wgLang->getCode from smwfInitMessages Unstubbing $wgUser on call

>>> of $wgUser->getOption from StubUserLang::_newObject
>>> Language::loadLocalisation(): got localisation for en from source 
>>> Unstubbing $wgLoadBalancer on call of $wgLoadBalancer->getConnection

>>> from wfGetDB
>>> IP: 192.168.62.1
>>> MessageCache::load(): got from global cache Unstubbing $wgOut on 
>>> call
>
>>> of $wgOut->addScript from TreeView4::addJS Fully initialised Would 
>>> search with '+transaction'
>>> Match with /\btransaction\b/
>>> Would search with '+transaction'
>>> Match with /\btransaction\b/
>>>
>>>
>>> Regards,
>>>
>>> Jack
>>> ----------------------------------------------------------------
>>> "May He protect us both. May He cause us both to enjoy.May we exert 
>>> together. May our studies become brilliant. May we not hate each 
>>> other"
>>>
>>>
>>> -----Original Message-----
>>> From: mediawiki-l-bounces at lists.wikimedia.org
>>> [mailto:mediawiki-l-bounces at lists.wikimedia.org] On Behalf Of Jim Hu
>>> Sent: Wednesday, June 11, 2008 5:01 AM
>>> To: MediaWiki announcements and site admin list
>>> Subject: Re: [Mediawiki-l] Strange problem with search
>>>
>>> Anything in the error logs when you get the blank page?  And by 
>>> blank to you mean white screen of death or blank wiki skin with no 
>>> content?
>>>
>>> Jim
>>>
>>> On Jun 9, 2008, at 2:07 AM, Jack Eapen C wrote:
>>>
>>>>
>>>> Hi,
>>>>
>>>> Mod_security is not enabled in my server -i.e I checked the 
>>>> httpd.conf
>>>
>>>> file and the apache modules folder. Reference to the particulat 
>>>> module
>>>
>>>> is not in the conf file and the mod-security.so file is not in the 
>>>> folder. Any other hints, plz?
>>>>
>>>>
>>>> Regards,
>>>>
>>>> Jack
>>>> ----------------------------------------------------------------
>>>> "May He protect us both. May He cause us both to enjoy.May we exert

>>>> together. May our studies become brilliant. May we not hate each 
>>>> other"
>>>>
>>>>
>>>> -----Original Message-----
>>>> From: mediawiki-l-bounces at lists.wikimedia.org
>>>> [mailto:mediawiki-l-bounces at lists.wikimedia.org] On Behalf Of Brion

>>>> Vibber
>>>> Sent: Friday, June 06, 2008 12:27 AM
>>>> To: MediaWiki announcements and site admin list
>>>> Subject: Re: [Mediawiki-l] Strange problem with search
>>>>
>>>> -----BEGIN PGP SIGNED MESSAGE-----
>>>> Hash: SHA1
>>>>
>>>> Jack Eapen C wrote:
>>>>> When I search with SOME keywords, my production wiki returns a 
>>>>> "blank"
>>>>> page. If I use the same words on the test wiki, no probs-results 
>>>>> are returned (content in both wikis are same). Some of the 
>>>>> problematic words are "transaction" (transaction backout has no 
>>>>> problem), function, cards (plastic cards is fine), account etc.
>>>>
>>>> Sounds like one of those "security" plugins for your web server, 
>>>> perhaps mod_security.
>>>>
>>>> It's set in an overprotective mode that freaks out and denies 
>>>> access when it sees bits of text coming through the form submission

>>>> that it thinks are indicative of an SQL or code injection attack.
>>>>
>>>> Contact your system administrator and let them know they've 
>>>> misconfigured the software and should back it out to more 
>>>> reasonable settings.
>>>>
>>>> - -- brion vibber (brion @ wikimedia.org) -----BEGIN PGP
>>>> SIGNATURE-----
>>>> Version: GnuPG v1.4.8 (Darwin)
>>>> Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org
>>>>
>>>> iEYEARECAAYFAkhINxkACgkQwRnhpk1wk47kngCgvrQx86kyR1mt71unPhvz+piA
>>>> oKkAnR3rnrecJq3COq8NvVtkA0KIQM0Y
>>>> =AoIU
>>>> -----END PGP SIGNATURE-----
>>>>
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>>>
>>> =====================================
>>> Jim Hu
>>> Associate Professor
>>> Dept. of Biochemistry and Biophysics
>>> 2128 TAMU
>>> Texas A&M Univ.
>>> College Station, TX 77843-2128
>>> 979-862-4054
>>>
>>>
>>> _______________________________________________
>>> MediaWiki-l mailing list
>>> MediaWiki-l at lists.wikimedia.org
>>> https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
>>>
>>>
>>> This electronic mail (including any attachment thereto) may be 
>>> confidential and privileged and is intended only for the individual 
>>> or entity named above. Any unauthorized use, printing, copying, 
>>> disclosure or dissemination of this communication may be subject to 
>>> legal restriction or sanction. Accordingly, if you are not the 
>>> intended recipient, please notify the sender by replying to this 
>>> email immediately and delete this email (and any attachment thereto)

>>> from your computer system...Thank You
>>>
>>> _______________________________________________
>>> MediaWiki-l mailing list
>>> MediaWiki-l at lists.wikimedia.org
>>> https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
>>
>> =====================================
>> Jim Hu
>> Associate Professor
>> Dept. of Biochemistry and Biophysics
>> 2128 TAMU
>> Texas A&M Univ.
>> College Station, TX 77843-2128
>> 979-862-4054
>>
>>
>> _______________________________________________
>> MediaWiki-l mailing list
>> MediaWiki-l at lists.wikimedia.org
>> https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
>>
>>
>> This electronic mail (including any attachment thereto) may be 
>> confidential and privileged and is intended only for the individual 
>> or entity named above. Any unauthorized use, printing, copying, 
>> disclosure or dissemination of this communication may be subject to 
>> legal restriction or sanction. Accordingly, if you are not the 
>> intended recipient, please notify the sender by replying to this 
>> email immediately and delete this email (and any attachment thereto) 
>> from your computer system...Thank You
>>
>> _______________________________________________
>> MediaWiki-l mailing list
>> MediaWiki-l at lists.wikimedia.org
>> https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
>
> =====================================
> Jim Hu
> Associate Professor
> Dept. of Biochemistry and Biophysics
> 2128 TAMU
> Texas A&M Univ.
> College Station, TX 77843-2128
> 979-862-4054
>
>
> _______________________________________________
> MediaWiki-l mailing list
> MediaWiki-l at lists.wikimedia.org
> https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
>
>
> This electronic mail (including any attachment thereto) may be 
> confidential and privileged and is intended only for the individual or

> entity named above. Any unauthorized use, printing, copying, 
> disclosure or dissemination of this communication may be subject to 
> legal restriction or sanction. Accordingly, if you are not the 
> intended recipient, please notify the sender by replying to this email

> immediately and delete this email (and any attachment thereto) from 
> your computer system...Thank You
>
> _______________________________________________
> MediaWiki-l mailing list
> MediaWiki-l at lists.wikimedia.org
> https://lists.wikimedia.org/mailman/listinfo/mediawiki-l

=====================================
Jim Hu
Associate Professor
Dept. of Biochemistry and Biophysics
2128 TAMU
Texas A&M Univ.
College Station, TX 77843-2128
979-862-4054


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