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Posted to notifications@couchdb.apache.org by "Robert Newson (JIRA)" <ji...@apache.org> on 2017/03/14 21:54:41 UTC

[jira] [Created] (COUCHDB-3325) Track _replicator/_user shards with LRU

Robert Newson created COUCHDB-3325:
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             Summary: Track _replicator/_user shards with LRU
                 Key: COUCHDB-3325
                 URL: https://issues.apache.org/jira/browse/COUCHDB-3325
             Project: CouchDB
          Issue Type: Bug
            Reporter: Robert Newson


We excluded _replicator and _users databases from the LRU many years ago, before clustering.

It is now possible to make many _replicator and _users databases (and clustering multiples this effect).

A couchdb cluster can degrade considerably in the presence of many of these databases even when they are empty and idle. They consume resources but are never closed.

Let's include all sys_db databases in the LRU. Any active ones will remain open anyway, that's the point of an LRU.




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