CODEWITHSUNDEEP
cassandragremlinjanusgraph
ciro
ciro

Reputation: 801

gremlin console - can not connect using cassandra config

I installed janus server (0.4) and cassandra (3.11) on my machine. They start correctly.

When I start the janus client to operate from the console

I run

:remote connect tinkerpop.server conf/remote.yaml

the connection is successful

then if I use this command

graph = JanusGraphFactory.open ('conf/janusgraph-cassandra.properties')

I get the following error message

WARN org.janusgraph.diskstorage.cassandra.thrift.CassandraThriftStoreManager - Cassandra Thrift protocol is deprecated and will be removed with JanusGraph 0.5.0. Please switch to the CQL backend.
Could not open global configuration

The warning is clear while the error that it cannot load the global configuration does not.

Upvotes: 2

Views: 313

Answers (2)

Aaron
Aaron

Reputation: 57748

In the same conf/ dir as the Thrift-based config file, you should also see a janusgraph-cql.properties file.

This file should already have storage.backend=cql set, as well as a few other parameters allowing you to connect to a local Cassandra instance running on 127.0.0.1 (without security enabled).

Upvotes: 1

ciro
ciro

Reputation: 801

Analyzing the configuration file in question I noticed the following property:

storage.backend

This property sets the driver. By changing its value from:

cassandrathrift

to

CQL

everything works fine.

The warning should be an error if you need to use cql as a driver.

Instead, the message suggests that it is looking for a default configuration file.

It could be that, when using cassandrathrift as driver, some properties are not set and therefore look for their default value. At the moment I don't know in which path this default file should exist and how it should be done. Considering that the cassandrathrift driver is deprecated, I think it is a good solution.

Upvotes: 2

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