wohali opened a new issue #1505: Skip deletes / tombstone eviction
URL: https://github.com/apache/couchdb/issues/1505
 
 
   @janl:
   > ddoc filter to specify docs to drop during compaction
   > 
   > This one is self-explanatory, mobile clients usually don’t need to sync 
deletes from a year ago first. Mango filters might already get us there, maybe 
we can do better.
   
   @davisp:
   > There's two issues we'll need to consider. First, my memory is a bit hazy 
but if I recall correctly there's a subtle issue around modifying the contents 
of a database during compaction. I believe it has to do with resuming 
compaction but I'd have to spend more time trying to write this again.
   > 
   > The second issue is that in a cluster if any of the documents that are 
dropped are accessed its likely that read-repair will end up rewriting them to 
the database as from the clustered point of view if a doc is missing on a 
single node then it needs to be re-written to heal the error.

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