Hello, there seems to be a problem with the current jawiki-dump. The size of the complete history dump is only 4.3 GB, but the size of the dump before was 19 GB.
Another issue: Acccording to http://wikitech.wikimedia.org/view/Dumps#Worker_nodes there shoulde be 3 threads for the large dumps, but since a few days there are only 2 running threads.
Best regards, Andreas