Hi since I'm fairly new to ArangoDB I have a couple of question regarding
clustering and replications. It seems that the documentation is not really
clear on those topics:
1. What is the purpose of having a cluster in ArangoDB since the
replication is not enabled but default and thus the failover would not make
any sense there. Is the idea to have a shared data store all instances in
the cluster should have access to?
2. Since the replication model can be either sync or async what about
the replication factor on a collection. So the replication needs to
configured on each database individually, and the idea to set the
replication factor on the collection level? My understanding is that
changing the replication factor on the collection level would make the
replication to be sync, but what if the database replication is in a async
mode?
I have an additional question about arangosh. Tried to configure an async
replication on a database and got this error:
JavaScript exception in file
'/usr/share/arangodb3/js/client/modules/@arangodb/replication.js' at 209,7:
ArangoError 1470: replication API is not supported on a coordinator
! throw err;
! ^
stacktrace: ArangoError: replication API is not supported on a coordinator
at Object.exports.checkRequestResult
(/usr/share/arangodb3/js/client/modules/@arangodb/arangosh.js:96:21)
at waitForResult
(/usr/share/arangodb3/js/client/modules/@arangodb/replication.js:207:16)
at setup
(/usr/share/arangodb3/js/client/modules/@arangodb/replication.js:310:10)
at Object.setupReplication
(/usr/share/arangodb3/js/client/modules/@arangodb/replication.js:313:51)
at <shell command>:1:34
Any idea what could have caused it? I'm on the latest 3.3.3 version with a
cluster up and running on 3 different machines.
Thanks,
Sam
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