All Questions
Tagged with janusgraph scylla
14
questions
2
votes
1
answer
560
views
Janusgraph not using index in production
Problem
When performing queries in my production environment, the index is not being used and a full scan is performed, but my development environment works fine and uses the index.
After looking ...
- 3,412
3
votes
1
answer
267
views
OperationTimedOutException in gremlin and janusgraph while connecting it with scylla running in docker-container
I tried to implement scylla with janusgraph, but received operation timeout exception.
I also tried to implement cassandra with janusgraph and run successfully.
I am running scylladb in docker-...
- 748
7
votes
1
answer
255
views
How does JanusGraph Handles, Data consistency between Elasticsearch and ScyllaDb(Cassandra)
We are planning to use JanusGraph with ScyllaDb as our storage backend and elasticsearch as our index backend in production. ElasticSearch indexes the data stored in ScyllaDB, and we are not ...
- 93
5
votes
3
answers
1k
views
Gremlin: The provided traverser does not map to a value
g.V()
.has('atom', '_value', 'red').fold()
.coalesce(unfold(), addV('atom').property('_value', 'red')).as('atom')
.out('view').has('view', '_name', 'color').fold()
.coalesce(unfold(), ...
- 151
1
vote
1
answer
282
views
Cannot create index in JanusGraph
I've installed JanusGraph 0.5.2 with ScyllaDB 4.2.1 and Elasticsearch 6.6.0 and I'm trying to create a fulltext index according to the docs as follows:
1. mgmt = graph.openManagement()
2. PropertyKey ...
- 151
0
votes
1
answer
677
views
Setting up JanusGraph
I'm new to JanusGraph. Can somebody help me edit this docker-compose file to use ScyllaDB instead of Cassandra and Apache Solr instead of Elasticsearch? Also does Apache Spark get installed ...
- 151
0
votes
2
answers
1k
views
Graph Database or Relational Database Common Table Extensions: Comparing acyclic graph query performance
Are graph databases more performant than relational databases for highly connected acyclic graph data?
I need to significantly speed up my query results and hope that graph databases will be the ...
- 83
3
votes
1
answer
934
views
How to perform backup and restore of Janusgraph database which is backed by Apache Cassandra?
I'm having trouble in figuring out on how to take the backup of Janusgraph database which is backed by persistent storage Apache Cassandra.
I'm looking for correct methodology on how to perform ...
- 435
2
votes
1
answer
321
views
JanusGraph Not enough replicas available for query at consistency QUORUM
We have 7 nodes storage cluster with RF=4 and CL=ONE. Janus Graph has below settings in properties file-
storage.cql.replication-factor=4
storage.cql.read-consistency-level=ONE
storage.cql.write-...
1
vote
1
answer
383
views
Database selection for Read-only and write-once(insert) every growing data not to be modified
Scenerio
I have to use Janusgraph to store data, and i have a use case where i have every growing amount of data that is not needed to be modified ever. it will be read only and of-course written ...
- 20.4k
3
votes
1
answer
1k
views
Setting up ScyllaDB + Janusgraph + Tinkerpop
About to start using ScyllaDB with JanusGraph, and Tinperpop3.
For now, I'll work with <200 gb data, so I want to do everything on my own (xeon based) computer.
My question is mostly: are some ...
- 118
1
vote
1
answer
487
views
What are some cloud services to host a JanusGraph which uses ScyllaDB+ES for backend?
I have explored compose for JanusGraph which is supported by BlueMix and Compose.com
but they both offer services for 0.1.1 version. So I cannot use them both. Is there any other option that I have?
- 3,057
6
votes
2
answers
2k
views
Cassandra/Scylla as graph database backen for JanusGraph and API exposed with GraphQl
I am looking for a Graph database using Scylla or Cassandra as the backend and then expose the web api as GraphQl.
Can you help me verify that I have got the followin stack right:
GraphQl or ...
- 25.4k
2
votes
2
answers
468
views
JanusGraph with Solr
I am having problems with JanusGraph connecting to Solr: I have the following:
application.java
public static void main(String args[]) {
JanusGraph g = JanusGraphFactory.open("/path/to/...
- 6,290