While testing cbbackupmgr and creating the initial backup yields log entries in the backup.log file of the next kind:
2017-06-19T16:43:30.326+02:00 ERROR: db handle is being used by another thread -- couchbase.dcpClient.Mutation() at dcp.go:238
These occur every 3~6 seconds.
The command syntax used to do the backup is:
/opt/couchbase/bin/cbbackupmgr backup -c 127.0.0.1:8091 -u Administrator -p admin123 -a /var/mf/cb-backup/cb-backup -r cluster -t 1 --no-progress-bar
No other application was running interfacing with Couchbase.
What do these errors mean?
[Environment: 2-node Cb EE 4.6.1 on CentOS 6.8]