[GitHub] iilyak opened a new pull request #490: Revert add sys dbs to lru

[gi...@git.apache.org]

iilyak opened a new pull request #490: Revert add sys dbs to lru
URL: https://github.com/apache/couchdb/pull/490
 
 
   ## Overview
   
   This would revert following commits:
    - https://github.com/apache/couchdb/commit/92c25a98666e59ca497fa5732a81e771ff52e07d: Add sys_dbs to the LRU  
    - https://github.com/apache/couchdb/commit/2d984b59ed6886a179fd500efe9780a0d0ad62e3: fix compiler and dialyzer warnings
   
   Turns out this commits exhibit bad behavior causing `couch_server` message queue backup in the case when there are many `_replicator` databases in the system.
   
   ## Testing recommendations
   
   This brings the old version of the code which known to be working. Therefore the risk is minimal. Running test suite should suffice.
   
   ## JIRA issue number
   
   It is related to [COUCHDB-3325](https://issues.apache.org/jira/browse/COUCHDB-3325)
   
   ## Related Pull Requests
   
   None
   
   ## Checklist
   
   - [x] Code is written and works correctly;
   - [x] Changes are covered by tests;
   - [ ] Documentation reflects the changes;
   - [ ] I will not forget to update [rebar.config.script](https://github.com/apache/couchdb/blob/master/rebar.config.script)
         with the correct commit hash once this PR get merged.
   
 
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