Which xml dump is it?
Can you provide some of those missing articles?

zantezuken wrote:

It's http://download.wikimedia.org/ruwiki/20091207/ruwiki-20091207-pages-articles.xml.bz2

Article "Операционная система" for example (line number 515495 in the dump).

zantezuken wrote:

Ok, here is the one of missing articles:
http:;/shinra.ru/kein/w/operating_system.xml (40Kb, UTF-8)

Dunno how can I help else :< Really annoying bug, make the whole dumps useless since I can't import things properly ;<

I do find the insert for Операционная система at page table:

$ bzcat ruwiki-20091207-pages-articles.xml.bz2|java -jar mwdumper.jar --format=sql:1.5 | grep -m 1 "'Операционная_система'"

INSERT INTO page (page_id,page_namespace,page_title,page_restrictions,page_counter,page_is_redirect,page_is_new,page_random,page_touched,page_latest,page_len) VALUES (3428,0,'Эмоция','',0,0,0,RAND(),DATE_ADD('1970-01-01', INTERVAL UNIX_TIMESTAMP() SECOND)+0,20389302,28622),(3432,0,'Человек_разумный','',0,0,0,RAND(),DATE_ADD('1970-01-01', INTERVAL UNIX_TIMESTAMP() SECOND)+0,20412105,62890), ...

... (4590,0,'1545_год','',0,0,0,RAND(),DATE_ADD('1970-01-01', INTERVAL UNIX_TIMESTAMP() SECOND)+0,17287964,3074),
(4591,0,'Операционная_система','',0,0,0,RAND(),DATE_ADD('1970-01-01', INTERVAL UNIX_TIMESTAMP() SECOND)+0,20354505,39406),
(4593,0,'Рим','',0,0,0,RAND(),DATE_ADD('1970-01-01', INTERVAL UNIX_TIMESTAMP() SECOND)+0,20389427,116221),(4595,0,'Двоичные_приставки','',0,0,0,RAND(),DATE_ADD('1970-01-01', INTERVAL UNIX_TIMESTAMP() SECOND)+0,19830413,15461)...

...(4904,0,'23_января','',0,0,0,RAND(),DATE_ADD('1970-01-01', INTERVAL UNIX_TIMESTAMP() SECOND)+0,20288736,13963),(4905,0,'24_января','',0,0,0,RAND(),DATE_ADD('1970-01-01', INTERVAL UNIX_TIMESTAMP() SECOND)+0,20288479,14120),(4906,0,'25_января','',0,0,0,RAND(),DATE_ADD('1970-01-01', INTERVAL UNIX_TIMESTAMP() SECOND)+0,20288290,29154),(4907,0,'26_января','',0,0,0,RAND(),DATE_ADD('1970-01-01', INTERVAL UNIX_TIMESTAMP() SECOND)+0,20313506,16559),(4908,0,'27_января','',0,0,0,RAND(),DATE_ADD('1970-01-01', INTERVAL UNIX_TIMESTAMP() SECOND)+0,20313334,14701),(4909,0,'28_января','',0,0,0,RAND(),DATE_ADD('1970-01-01', INTERVAL UNIX_TIMESTAMP() SECOND)+0,20420267,22861),(4910,0,'29_января','',0,0,0,RAND(),DATE_ADD('1970-01-01', INTERVAL UNIX_TIMESTAMP() SECOND)+0,20352730,19695);

Maybe mysql didn't accept the full line for some reason?

zantezuken wrote:

No, as I said I didn't get INSERT for that page at all.
Can you compile latest mwdumper for window, please? So, I can test.

I used the same mwdumper.jar as you. Jar files work cross platform. How were you looking for the insert?

zantezuken wrote:

I searched the whole dump for INSERT into page with 'Операционная система'. I found many articles which I already has in DB, but articles which is missing in my current DB missing in the generated SQL-dump as well.
Well, the only missing thing is INSERT into page, old_text, old_data and old_id is here.

Don't look for 'Операционная система', you must look for 'Операционная_система', it will be in db form, with spaces converted into underscores.
There will be three instances: [[Операционная система]] which is the insert line I included above, [[Category:Операционная система]] and [[Template:Операционная система]].
All of them "INSERT INTO page" lines, albeit really long lines.

zantezuken wrote:

Yeh, I found 'Операционная_система' in the SQL dump, but that's weird... the whole INSERT into page was skipped, I can't find any page_id's for all these articles in that INSERT script. Weird. Tho, I have [[Category:Операционная система]] and [[Template:Операционная система]] ;<
Annoying.
Well, anyway, bug is INVALID, sorry for the false report.

zantezuken wrote:

Or, perhaps, it is valid since mwdumper does not generate correct SQL dump. Too many duplicate entries but why? The DB is empty. Looks like mwdumper does something wrong.

zantezuken wrote:

Here is the [http://shinra.ru/kein/out.7z full log].
As you can see all errors related to 'rev_comment' only, so, if generated SQL
is correct there shoul not by any issue with missing articles. But there is ;<

Which option did you select for the database? utf-8, binary or backwards-compatible with mysql4?

zantezuken wrote:

binary

Works for my with ruwiki-20100331-pages-articles.xml.

Have the tables page, revision and text all the same number of rows? (1478943)

Maybe that is a encoding problem, try to append
&characterEncoding=utf8
to the --output parameter