titan Questions
3
Index status is installed. How to change the status to registered, then disabled, to remove it?
GraphTraversalSource g = janusGraph.traversal();
JanusGraphManagement janusGraphManagement = janusGra...
Oviform asked 24/7, 2017 at 6:11
3
Solved
Background: I'm trying to implement a time-series versioned DB using this approach, using gremlin (tinkerpop v3).
I want to get the latest state node (in red) for a given identity node (in blue)...
Tman asked 10/2, 2017 at 17:16
3
Solved
I have an array of usernames (eg. ['abc','def','ghi']) to be added under 'user' label in the graph.
Now I first want to check if the username already exists (g.V().hasLabel('user').has('username',...
Margravine asked 3/9, 2017 at 20:14
1
I am stuck with my TitanDB, Django1.8 and Mogwai0.7.7 package.
I have Graph database titan/cassandra on localhost dev machine, and after creating wrong queries in rexster gremlin web interface my D...
2
Solved
I'm having a vertex with following details:
http://localhost:8182/?gremlin=g.V(4192)
{
"requestId": "6ce01f3b-f623-41f6-bb03-dd56014e0701",
"status":
{
"message": "",
"code": 200,
"attrib...
Dietetics asked 18/5, 2016 at 12:57
4
Using tinkerpop blueprints API, what is the best way to find if an edge exists between two vertices? I would like to avoid vertex.getEdges() and iterate until find the right one.
E.g.: Check if v1...
Proulx asked 1/5, 2013 at 22:19
4
Solved
I use Titan 0.4.0 All, running Rexster in shared VM mode on Ubuntu 12.04.
How could I properly delete a graph in Titan which is using the Cassandra storage backend?
I have tried the TitanCleanup....
1
Solved
I have worked on titan. I came to know that titan can take three databases as it's back-end. Now I am learning Neo4j. But, I am not getting just like titan uses Cassandra etc. at it's back-end; whi...
She asked 16/8, 2017 at 11:6
2
I have a few questions regarding the integration of the two tools. Not technical questions and how to setup( i will have my fun with that later ) but more on the course of the project and the direc...
Perigynous asked 28/6, 2017 at 14:52
1
Solved
I am thinking of using TitanDB. It seems to really fit our needs (we have full control over the storage engine and we can build it on top of DynamoDB). However I am worried about the fact that the ...
Fructification asked 8/6, 2017 at 18:46
2
Solved
I'm using Titan 1.0 Version and Gremlin Server with REST Api for creating and updating Vertex details.
How can I delete the vertex using vertexId?
Buyers asked 19/5, 2016 at 6:57
1
Solved
I am running JanusGraph (0.1.0) with Spark (1.6.1) on a single machine.
I did my configuration as described here.
When accessing the graph on the gremlin-console with the SparkGraphComputer, it is ...
Pasadis asked 5/5, 2017 at 12:55
4
We are running a Titan Graph DB server backed by Cassandra as a persistent store and are running into an issue with reaching the limit on Cassandra tombstone thresholds that is causing our queries ...
4
Solved
Following the acquisition of Aurelius by DataStax, and since Titan 1.0.0 was released in September 2015 and received very few commits since then, I wonder whether it is safe to use TitanDB in produ...
Propulsion asked 3/2, 2016 at 13:7
2
I'm trying to create a graph using gremlin-python, but I can't seem to work out how to add an edge.
Using the standard Gremlin console I can do the following:
gremlin> a = g.addV().next()
==&g...
2
Solved
I have a titan graph with two sets of vertices, one for UserID and another for Products. The edges between the UserID and Product vertices contain the "Dates" when products were purchased. I am loo...
1
Solved
Abstract
I'm trying to set up a Titan/Cassandra/Gremlin-Server stack in Docker (v1.13.0). The problem I'm facing is that applications trying to connect to Gremlin-Server on the default port 8182 a...
Change asked 21/1, 2017 at 19:52
1
Solved
How would I traverse through a graph and increment a value of a vertex property? Either by some fixed amount or by an amount in a property of an edge leading to it.
eg. with the following graph:
...
1
Solved
There are already several questions on the aurelius mailing list as well as here on stackoverflow about specific problems with configuring Titan to get it working with Spark. But what is missing in...
Top asked 18/10, 2016 at 9:53
1
Solved
In gremlin,
s = graph.traversal()
g = graph.traversal(computer())
i know the first one is for OLTP and second for OLAP. I know the difference between OLAP and OLTP at definition level.I have th...
2
Solved
I wanted to drop an existing index and followed the steps in the documentation so far. I have no separate indexing backend configured for now. However, when I get to the step where you have to wait...
1
Solved
I am trying to obtain Graph object using Tinkerpop3 in Java as client from already running TitanDB server (I do not want to create server).
In other words, I am trying to implement such function:
...
Room asked 3/8, 2016 at 15:0
1
Solved
I'm creating a Titan graph (backed by Dynamodb); I'm using Titan 1.0.0 and running Gremlin-Server 3 (on TinkerPop3).
I'm trying to add a vertex to my graph with a label and multiple properties in ...
Menam asked 27/7, 2016 at 21:49
2
Solved
So obviously, a straight forward way to find an edge between two vertices is to:
graph.traversal().V(outVertex).bothE(edgeLabel).filter(__.otherV().is(inVertex))
I feel that filter step will hav...
Achates asked 11/3, 2016 at 15:22
2
Solved
Setup
I'm implementing a recommender system running on a Ubuntu 12.4 Server using Titan Rexster (titan-server-0.4.4.zip) with the Elasticsearch backend. In order to connect to the Rexster Server I...
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