iilyak commented on issue #1642: Set io_priority for couch_index pids
URL: https://github.com/apache/couchdb/pull/1642#issuecomment-433186651
 
 
   Hi @AlexanderKaraberov 
   
   As you noticed already `io_priority` is used by `ioq` 
([here](https://github.com/apache/couchdb-ioq/blob/master/src/ioq.erl#L110:L115))
 to select appropriate requests queue. The bug fixed in this PR makes sure that 
`view_compact` requests go to the right queue. Database admin can influence 
which requests would have greater priority [see 
here](https://github.com/apache/couchdb-ioq/blob/master/src/ioq.erl#L139:L144). 
 

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