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Questions tagged [janusgraph]

JanusGraph is a scalable graph database optimized for storing and querying graphs containing hundreds of billions of vertices and edges distributed across a multi-machine cluster. JanusGraph is a transactional database that can support thousands of concurrent users executing complex graph traversals in real time. When posting questions, please include environment details, such as the storage and indexing backends used.

JanusGraph is a scalable graph database optimized for storing and querying graphs containing hundreds of billions of vertices and edges distributed across a multi-machine cluster. JanusGraph is a transactional database that can support thousands of concurrent users executing complex graph traversals in real time.

When posting questions, please include environment details, such as the storage and indexing backends used.

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857 questions
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How to integrate Cytoscape with JanusGraph 0.2?

JanusGraph official website provides some graph visualization tools. Cytoscape is one of them. I want to visualize my graph data with Cytoscape. I have no clue how to integrate Cytoscape with JanusGraph. Can someone provide some information how to…
jonyroy
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Setup and configuration of JanusGraph for a Spark cluster and Cassandra

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 always empty. I cannot find any error in the…
Felix Hill
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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 controlling how and when data is written in elasticSearch,…
Ankush
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Passing dynamic value inside sample method in gremlin is not working

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 integer values it is working fine. The following query…
rajashekar
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JanusGraphException: Could not commit transaction due to exception during persistence Caused by: PermanentLockingException: Local lock contention

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 from 10+ different threads for different vertices,…
palwe-prafulla
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Javascript how to retrieve value from a Map that has an EnumValue as key

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 directly retrieve this kind of entries. The only that…
Pistacchio
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How to handle vertices with a large number of edges?

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's say that we have a group_1 defined in our graph.…
Michał
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Tinkerpop & Python - Setting an array property via gremlin

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 example, here is an example with a script running…
Barak Itkin
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Best way to get (millions of rows of) data into Janusgraph via Tinkerpop, with a specific model

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 specific model in which the variables and rows need to…
nikolai
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Janusgraph 0.3.0 Tinkerpop 3.3.3 java - serialization error after adding Edge using GryoMessageSerializerV3d0

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(ridx: 98, widx: 98, cap: 98)] could not be deserialized…
ptc
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Gremlin-Python Connecting to existing JanusGraph

I Have created a graph using gremlin console gremlin> ConfiguredGraphFactory.graphNames ==>MYGRAPH gremlin>…
Servesh Singh
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Not able to query using gremlinpython

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: from gremlin_python import statics from…
Samarth
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JanusGraph : Please add a key named "ConfigurationManagementGraph" to the "graphs"

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 plugin activated:…
cegprakash
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6
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asyncio - how many coroutines?

I have been struggling for a few days now with a python application where I am expecting to look for a file or files in a folder and iterate through the each file and each record in it and create objects to be persisted on a Janusgraph database. The…
Cracoras
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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 TinkerPop // Api schema, exposing api JanusGraph(privious…
Chris G.
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