Xmldatadumps-l June 2009

xmldatadumps-l@lists.wikimedia.org

5 participants
5 discussions

Re: [Xmldatadumps-l] enwiki page-meta-history
by Nathan J. Yoder 03 Jul '09

03 Jul '09

Why was the newst copy of enwiki with the full history removed from the downloads site? I checked around and was only able to find one place with it: http://www.archive.org/details/enwiki-20080103 You'll want the "enwiki-20080103-pages-meta-history.xml.7z" file, which is about 17GB. There is another file that is 130GB, but that is the SAME thing, just compressed with bz2 insteaf of 7z, making it larger, so don't get that one. Tomasz, I am willing to volunteer my services as a programmer to help with this problem in making full history enwiki dumps, if it is possible (I can't donate hardware/money). What are the issues which are causing it to be so slow and what methods are you employing to improve it? I know that LiveJournal has some sort of live backup system using MySQL and Perl, but couldn't find any details on their presentations. You might be able to ask one of their developers for help, on their LJ blog. Can Wikimedia afford a snapshot server? It doesn't need to be as fast as the others. In the long run, whatever this system is, it will probably need to be integrated into some sort of backup, because it would be a huge pain if something happened at the data center and you needed to restore from the partial quasi-backups in the current systems. How does the current dump method work? Are they incremental in the sense that they build up on previous dumps, instead of re-dumping all of the data? For future dumps, we might have to resort to some form of snapshot server that is fed all updates either from memcaches or mysqls. This allows for a live backup to be performed, so it's useful for not just dumps. Is it possible to suspend any individual slaves temporarily during off peak hours to flush the database to disk and then copy the database files to another computer? If not, we may still be able to use a "stale" database files copied to another computer, as long as we only use data from it that is at least a few days old, so we know that it's been flushed to disk (not sure how mysql flushes the data...). Of course, this may all be totally off, since I don't know a lot about the current configuration and issues, so I'll take whatever input you have to help work on something better.

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Re: [Xmldatadumps-l] enwiki page-meta-history
by Tomasz Finc 15 Jun '09

15 Jun '09

Sebastian Graf wrote: > Hello Tomasz, > > thanks for your quick response. > > Unfortunately I am in need not only of *text* but of *english text* > since we are currently working on an revisioned indexer. > > Are there any english dumps available except the enwiki? Yup, you can grab enwikisource enwikiversity enwikinews enwiktionary enwikiquote metawiki commonswiki --tomasz

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enwiki page-meta-history
by Sebastian Graf 14 Jun '09

14 Jun '09

Hello everybody, I am a worker at the computer science departement at the University of Konstanz in Germany. We are working on a revisioned native XML database. Wikipedia is therefore the optimal playground when it comes to huge amounts of data since the xml dump is perfect for our application. At the moment I am looking for a new dump for the enwiki which contains all revisions. I know that this XML has to be really huge, but that's why we want to use it. Unfortunately I couldn't find any file called "page-meta-history" on the enwiki download section. Can you help me with some dump, an idea how to get the data,...? greetings sebastian -------------------------------------------------- Sebastian Graf Distributed Systems Lab University of Konstanz Phone: +49 7531 88 4319 Mail: sebastian.graf(a)uni-konstanz.de

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wikipedia 147GB dump
by randomcoder1＠gmail.com 14 Jun '09

14 Jun '09

Hi, I'm trying to get a hold of the wikipedia dump , in particular enwiki-latest-pages-meta-history.xml.bz2 It seems that on the page where it's supposed to be (http://download.wikipedia.org/enwiki/latest/) it's weighing at 0.6KB whereas I was used for it to be 147GB What happened to the data and where did it went ? Also , on the wikipedia ( http://en.wikipedia.org/wiki/Wikipedia_database ) page I read "As of January 17 </wiki/January_17>, 2009 </wiki/2009>, it seems that all snapshots of pages-meta-history.xml.7z hosted at http://download.wikipedia.org/enwiki/ are missing. The developers at Wikimedia Foundation are working to address this issue (http://lists.wikimedia.org/pipermail/wikitech-l/2009-January/040841.html). There are other ways to obtain this file" I checked the other ways of obtaining the file that they describe , none worked. Why did the dumps vanished and how can I download a copy of them ? Thank you

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Incomplete English Wiki but Labeled complete
by Bilal Abdul Kader 02 Jun '09

02 Jun '09

Greetings, I noticed that this enwiki dump (http://dumps.wikimedia.org/enwiki/20090520/) was completed on the 25th but in fact it is not complete. It is missing the behemoth (pages-meta-history.xml). bilal

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Xmldatadumps-l June 2009