Stack Overflow
Stack Overflow

Questions tagged [rexster]

Rexster is a high-performance graph server that allows you to access any Blueprints graph through from any programming language through its binary protocol or its HTTP/REST API.

Rexster is a high-performance graph server that allows you to access any Blueprints graph from any programming language through its binary protocol called RexPro or its HTTP/REST API.

You query Rexster with the graph-traversal language Gremlin, and you can extend Rexster to support custom server-side algorithms for graph searching, scoring, ranking, and recommendation.

119 questions
22
votes
3 answers

How to start Titan graph server and connect with gremlin?

I've been playing with Titan graph server for a while now. And my feeling is that, despite an extensive documentation, there is a lack of Getting started from scratch tutorial. My final goal is to have a titan running on cassandra and query with…
Mermoz
  • 12,738
  • 16
  • 53
  • 81
21
votes
2 answers

Hype around graph databases... why?

There is some hype around graph databases. I'm wondering why. What are the possible problems that one can be confronted with in today's web environment that can be solved using graph databases? And are graph databases suitable for classical…
amirouche
  • 6,848
  • 6
  • 38
  • 83
12
votes
1 answer

RexProScriptException transaction is not open in Django with Titan (graph DB)

I have 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 Django Object Graph Mapper mogwai stopped to work.…
Dmitry Yudin
  • 880
  • 1
  • 8
  • 26
11
votes
2 answers

How to actually set up basic Titan + Rexster + Cassandra?

I am trying to set up a completely basic Titan Rexster Cassandra instance, but I can't seem to break the code. I have tried a whole lot of things now to get it to work but I just can't seem to get it to work. No matter how much I read about it I am…
Automatico
  • 10,712
  • 7
  • 67
  • 106
9
votes
4 answers

How to delete graph in Titan with Cassandra storage backend?

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.clear(graph), but it does not delete everything. The…
Automatico
  • 10,712
  • 7
  • 67
  • 106
6
votes
2 answers

Why does Rexster Server (and Titan) stop responding?

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 use the Bulbflow library for python. Beta seemed to…
Gianluca
  • 83
  • 6
6
votes
1 answer

How do I connect to orientdb graph through rexster with bulbs?

So, I'm using python3.2 and bulbs on mac-osx with rexster and orientdb. Details: orientdb - standard download from their page ~/workspace/orientdb-community-1.7-rc1 Running the server, ./bin/server.sh database - orientdb…
Adam Miller
  • 1,700
  • 1
  • 20
  • 43
6
votes
2 answers

How do you get the Titan graph database working with Python?

I'm new to this and am trying to get Titan working with Python. I've been beating my head on this for a day and a half and can't get anywhere. I've tried bulbs and rexpro-python but nothing seems to work. In rexpro-python the following…
Tim Ludwinski
  • 2,161
  • 23
  • 30
4
votes
5 answers

How to use ArangoDB with bulbs & rexster?

I'm currently trying to access an ArangoDB database by using Bulbs and Rexster. I need to do that because I want to use Bulbs (http://bulbflow.com) to launch some gremlin queries from Python. (I really like AQL and arangosh but I already have a lot…
Raphaël Braud
  • 1,379
  • 9
  • 14
4
votes
2 answers

Titan + d3 for computer network visualisation

I've been experimenting with Titan over the past few weeks and would like some pointers on the way forward, plus a few specific questions. The purpose of the project is to store log data on a Cassandra cluster (for this question let's use the…
adaml288
  • 61
  • 1
  • 6
3
votes
1 answer

Titan Gremlin Server is giving Error "not a WebSocket handshake request: missing upgrade"

I downloaded Titan Version 1.0 on EC2 server from url Titan 1.0.0 with Hadoop 1 – recommended Then I unzip and ran the titan server with following command : bin/titan.sh start Forking Cassandra... Running `nodetool statusthrift`... OK (returned…
Sumit Chourasia
  • 2,284
  • 6
  • 26
  • 54
3
votes
1 answer

TITAN : Gremlin query returns inconsistent results on repeated execution

I am running REXSTER/TITAN 0.4 over cassandra and uses gremlin for traversals. I ran below gremlin query in Rexster Doghouse Gremlin console. Vertex 92 was deleted earlier, since it was a duplicate vertex with same key ("eddy.com") But when I am…
Remis Haroon - رامز
  • 2,536
  • 1
  • 28
  • 53
2
votes
1 answer

OrientDB Gremlin - Retrieve Vertex for a class in gremlin not hitting indexes

I'm using OrientDB 2.1.11 and rexster 2.6 and gremlin is the main query language. I use via rexpro (and rexster REST). My issue is: how to get the indexes to hit from gremlin (I must use gremlin not orient sql). I have a vertex class zipcode, which…
Omair Jafri
  • 136
  • 1
  • 7
2
votes
2 answers

How to parameterized Gremlin query in Java?

I am interested in parameterizing the Gremlin Query in Java code as we do in case of SQL query using PreparedStatement (example : statement.setString(int, String), statement.setInt(int, int)). Kindly, please let me know can we do this kind of stuff…
Kamal Verma
  • 87
  • 1
  • 9
2
votes
1 answer

How to add a new property to an existing vertex in gremlin?

I have trouble finding a way of adding a new property to an existing vertex using gremlin. ex property to add: the property "name" with value "anna". First I try to find the vertex which I want to add the property to. I do this by: g.v(id), where id…
agiledevpro
  • 113
  • 1
  • 3
  • 15
1
2 3 4 5 6 7 8