ArielGlenn added a comment.

  Summarizing, we have three things at play:
  
  - consistence between entity dumps and xml/sql dumps, for people who use them 
both and are trying to get a consistent picture of the data
  - frequency; it has been once a week until now; the best we could do if we 
'sync up' entity dumps and the two monthly runs of xml/sql dumps is 3 times a 
month
  - allowing time for maintenance windows; at some point we need to have times 
that nothing is writing to the back-end server, so that we can do things like 
security updates (we have a fallback server but it's not nice to switch it in 
as main NFS server while writes are happening, it's intended for use in case 
the first backend server dies)
  
  Currently xml/sql dumps run 1st of the month, until around the 15th or 16th; 
entity dumps run starting Monday 3 am UTC and complete sometime Friday, 
although they have taken longer (running through Sunday late night). The newly 
updated patch would run entity dumps the 1st, 15th and 20th of the month.  This 
is not as frequent as before but not awful; it allows predictable maintenance 
windows as needed (17th-19th, 28th-??); it allows users of both dumps to have a 
more-or-less consistent picture across both dumps in cases where they need it.
  
  What do folks think about this?
  
  Obviously no change will go out until we have agreement here, and whatever we 
do must be clearly and widely announced.

TASK DETAIL
  https://phabricator.wikimedia.org/T216160

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