Good morning!
The pages-meta-history dumps for hewiki take 70 hours these days, the longest of any wiki not already running with parallel jobs. I plan to add it to the list of 'big wikis' starting August 1st, meaning that 6 jobs will run in parallel producing the usual numbered file output; look at e.g. frwiki dumps for an example.
Please adjust any download/processing scripts accordingly.
Thanks!
Ariel