I use Version: 4.0.0-4051 Community Edition (build-4051) on CentOS 6 (from RPM). With one empty bucket, I get following error every five minutes (and also /opt/couchbase/var/lib/couchbase/data/@2i seems to be growing with no data in any bucket and no traffic).
Service ‘indexer’ exited with status 1. Restarting. Messages: github.com/couchbase/indexing/secondary/indexer.(*indexer).listenAdminMsgs(0xc208054280)
created by github.com/couchbase/indexing/secondary/indexer.(*indexer).run
[goport] 2015/12/15 01:23:57 /opt/couchbase/bin/indexer terminated: exit status 2
Would have created the issue in JIRA but seems that forum credentials don’t work there.