Create a keyspace with additional parameters

[Андрей Лакшман]

Good day!

1) I use JanusGraph in conjunction with ScyllaDB. I am planning to use  ScyllaDB in a clustered version. For this I need to not just create a keyspace: storage.cql.keyspace=janusgraph 

And create it with additional parameters: WITH replication = {'class': 'NetworkTopologyStrategy', 'replication_factor': 3}

Is it real? If so, how can I do this?

2) Do I understand correctly that  JanusGraph creates a  keyspace  once and then works with it without deleting it? And he makes all further changes in this  keyspace?

If so, then it turns out I can just make the changes I need to the already created keyspace?

[HadoopMarc]

Hi Andrei,

In the file conf/janusgraph-cql.properties that you use to first open the graph, you can simply add a line:

      storage.cql.replication-factor=3

Also check the other config parameters at:

               https://docs.janusgraph.org/basics/configuration-reference/#storagecql

as well as their associated mutability levels.

HTH,    Marc

Op dinsdag 25 augustus 2020 om 17:30:32 UTC+2 schreef Андрей Лакшман:

[Андрей Лакшман]

WOW, Great answer, thank you very much!

I'll just clarify if there is a way to specify the type of replication strategy in the file  janusgraph-cql.properties  ? This is an important parameter for the scylla cluster, there are two types of them: SimpleStrategy and NetworkTopologyStrategy. These types must match the information in the scylla config file - this is important for the operation of the cluster.

вт, 25 авг. 2020 г. в 19:06, HadoopMarc <bi...@xs4all.nl>:

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С уважением,

Метелкин Андрей

[Андрей Лакшман]

I suppose it should look like this:  storage.cql.class=SimpleStrategy    I'm right?

Unfortunately, I'm not good at CQL.

ср, 26 авг. 2020 г. в 10:10, Андрей Лакшман <metylki...@gmail.com>:

[Андрей Лакшман]

No more questions! Thank you so much! Studied: https://docs.janusgraph.org/basics/configuration-reference/#storagecql

In my case, you need:

storage.cql.replication-strategy-class=SimpleStrategy

storage.cql.replication-factor=5    

ср, 26 авг. 2020 г. в 10:42, Андрей Лакшман <metylki...@gmail.com>: