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Questions tagged [titan]

Titan is a highly scalable graph database optimized for storing and querying massive-scale graphs containing billions of vertices and edges distributed across a multi-machine cluster

Titan is a highly scalable graph database optimized for storing and querying massive-scale graphs containing billions of vertices and edges distributed across a multi-machine cluster.

Titan is a transactional database that can support thousands of concurrent users.

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951 questions
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Memory issue with graph databases

I am trying to benchmark three different graph database the Titan, the OrientDB and the Neo4j. I want to measure the execution time for the database creation. As a test case I use this dataset http://snap.stanford.edu/data/web-flickr.html . Although…
salvador
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Right way to cleanup neo4jgraph and neo4jhagraph

Like TitanCleanup.clear(TitanGraph g) is there a way to cleanup Neo4jGraph and Neo4jHaGraph.
Amit
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Adding Edge Label Titan-Rexster

I am imlpementing the Titan graph database with Rexster and Cassandra. I try to add an edge like this in Ruby with Gremlin: query = 'a = g.addVertex(null,[name:\'' + someName + '\']); g.addEdge(null, g.getVertex(' + someVertexId + '), a,…
Automatico
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Titan - Cassandra and Push notificationss

I plan to use Titan for a graph datamodel along with Fanus. Choice of Data Store - I am yet to decide on the Data store though Cassandra seems to be the obvious choice. Has anyone benchmarked Titan with other Data Stores? Push Notifications : Need…
user2827607
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Using Rexter API to interact with Neo4j

Is there a way to interact with a neo4j graph db (running externally HA mode) via Rexter API. Neo4j's REST api is great but using Rexter makes my application completely agnostic of the remote graph db implementation stack. This will enable me to…
Amit
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Unable to start titan-server (Titan with Cassandra and Rexster)

I am trying to implement titan graph database on cassandra for one of my applications. As per documentation, I have downloaded and extracted titan-cassandra-0.3.2 and when it trying to run titan.sh with titan-server-rexster.xml…
user2611221
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Create\Add a graph Titan server using default rexster

when i run rexster.getGraphNames() my only result is graph, when i ran a gremlin instance directly over titan i had tmp and created a graph called mygraph i have been loooking around and havent found anything
Billybonks
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Gremlin: T.in operator error with has() filter in Titan 0.3.2

I'm having trouble using the T.in operator with has() filter in Titan 0.3.2 The following Gremlin query...: g.V("type", "articles").out("has_tag").has("name", T.in, ["foobar"]) ... yields the following error in Titan console: No such property: in…
jbmusso
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Modelling Rules on Graph in Titan DB

Vertices and edges are one aspect in graph modelling. There are others like rules. for e.g. if someone is buying apples but also bought apples in previous 1 week but not bought in competitive stores and is a customer for more than 1 year offer a 10%…
ubreddy
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Querying Titan ElasticSearch backend via Rexster

I have Titan 0.3.2 running in embedded mode, and have been able to create and query ElasticSearch indexes via the Gremlin shell (see previous question). I am using the default configuration, which calls the ES index "search". These searches return…
bcm360
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How to replace an edge with Gremlin script

I want to look for a vertex, get an edge 'views', remove it, and replace with a new edge between the same vertices. g.V('uuid','bf4dcbd24e9944319954dec5ad60c658') …
joaoricardo000
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Could not instantiate implementation: AstyanaxStoreManager

I try to access the Titan graph database with Cassandra backend and everything works fine with the following code: package ch.uzh.ifi.ddis.dm.twhc.clusterhierarchy; import…
Faber
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Cassandra keyspace in Titan graph data base

I used Cassandra as my back end and created a key space in gremlin using the following properties conf=new…
Subbu
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Titan graph leaf nodes

I've a graph like " A-->B-->C " now i removed vertex "B". Now my graph contains vertices A and C and no edges, here C is the leaf node it doesn't linked with any other nodes. Now my doubt is what is advantage of leaf nodes…
Subbu
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Pagination for Reading Titan Vertex from HBase

I am currently working on creating a Java code that can read Titan Vertex From from Hadoop HBase backend. I know blueprint api provides a getVertices() method on every TransactionalGraph, but still I am trying implement my own method. Now for usual…
Pradatta
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