Index status is installed. How to change the status to registered, then disabled, to remove it? GraphTraversalSource g = janusGraph.traversal(); JanusGraphManagement janusGraphManagement = janusGra...

I can't understand how to get a JanusGraphManagement instance from a graph created with the ConfiguredGraphFactory. I tried doing something like this: JanusGraphFactory.Builder config = JanusGr...

I find the following code to create edge if it has not existed yet. g.V().hasLabel("V1") .has("userId", userId).as("a") .V().hasLabel("V1").has("userId", userId2) .coalesce( bothE("link").where(o...

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(), addE('vie...

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 contro...

I'm using JanusGraph with ElasticSearch and Cassandra. My question is how JanusGraph stores the data when I create a new entity in case that I'm using two databases (JanusGraph and ElasticSearch) I...

I want to use Java API to manipulate graph on a remote server, the server actually hosts in localhost. The code I use to connect server is: JanusGraphFactory.Builder b = JanusGraphFactory.build();...

I am a newbie to the gremlin. I am trying to get some random vertices based on some condition. But if I am using sample method with some mathematical computation it is not working. But if I give in...

I need to load lots of vertices and edges to JanusGraph with Cassandra backend from other storage. I've read about bulk loading and Spark configuring (https://docs.janusgraph.org/advanced-topics/bu...

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 an...

I'm currently using TinkerPop java APIs for graph traversal. Currently I had to create a duplicate copy of the same traversal to compute the count. Long allUsersCount = gt.V().hasLabel("user").has...

I had worked on relational database; but now want to learn about graph database. I came to know that these two are graph database. What is difference between these two databases. What should we pre...

In our graph, there are a lot of vertices which have more than 100k of outgoing edges. I would like to know what are the approaches to handle all palettes of situation which come out of this. Let...

I am using embedded janusgraph in my java backend my code depends on janusgraph instanciated from graph = JanusGraphFactory.open(conf) AFAIK this connects to Cassandra and elastic search directly...

I have a high level code like this. MethodXyz() { updateVertex(A, props1) commit // some other code updateVertex(A, props2) commit // do something else - long running } This method is called fr...

I have a set up where I am using the gremlin-core library to query a remote Janusgraph server. The data size is moderate for now but will increase in the future. A few days ago, I saw the "Max fra...

I'm querying a database in Javascript where I get back a Map object. The problem is that the key of some entry in the map is an object, an EnumValue to be precise. I can't seem to find a way to di...

So I'm trying to deploy 2 instances of Janusgraph (v 0.3.1) to insert data in the same keyspace of ScyllaDb backend. To do that i deploy 2 janusgraph containers with docker. The first one is starti...

I am following this blog: https://developer.ibm.com/dwblog/2018/janusgraph-composite-mixed-indexes-traversals/ code: gremlin> graph.tx().rollback() ==>null gremlin> mgmt = graph.openMana...

I'm using JanusGraph with the standard python gremlin binding, and I'd like to set a float[] property on a vertex/edge. However, the Tinkerpop driver for Python doesn't seem able to do so. For exa...

Just started out with Tinkerpop and Janusgraph, and I'm trying to figure this out based on the documentation. I have three datasets, each containing about 20 milions rows (csv files) There is a s...

I get the following error after adding an edge in Java: 16:40:44.267 [gremlin-driver-loop-1] WARN org.apache.tinkerpop.gremlin.driver.MessageSerializer - Response [PooledUnsafeDirectByteBuf(ri...

I Have created a graph using gremlin console gremlin> ConfiguredGraphFactory.graphNames ==>MYGRAPH gremlin> ConfiguredGraphFactory.getConfiguration('MYGRAPH') ==>storage.backend=cql ==...

I'm using gremlinpython to access the data in Janusgraph, but it is throwing an exception whereas the data is accessible from Gremlin shell. Here is the Python code which I'm running remotely: fr...

I get the this error in gremlin console cegprakash@cegprakash:~/workspace/janusgraph-0.2.1-hadoop2$ ./bin/gremlin.sh \,,,/ (o o) -----oOOo-(3)-oOOo----- plugin activated: janusgraph.imports pl...