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
237
questions with no upvoted or accepted answers
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JanusGraph BulkLoading CSV with ScriptInputFormat
I am trying to load a CSV file into a JanusGraph.
As I understand it, I need to create my graph and the schema, then use the BulkLoaderVertexProgram with my own custom groovy script to parse a csv ...
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8
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What is the minimum System requirement to launch janusgraph
I just started JanusGraph and my total RAM usage is more than 5GB without firing any queries. I have the following dependent services running
JanusGraph
GremlinServer (via JanusGraph)
Cassandra (via ...
- 359
7
votes
1
answer
903
views
What are the Pros and Cons when using remote janusgraph connection over embedded?
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 ...
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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 ...
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6
votes
2
answers
756
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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 ...
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5
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Janusgraph : Could not instantiate implementation: org.janusgraph.diskstorage.cql.CQLStoreManager
I have an application which is using embedded janusgraph with cassandra as backend database.
Previously, i was connecting using cassandrathrift, and it was working fine. Here are the old ...
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5
votes
1
answer
442
views
How to get JanusGraphManagement from Java
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 = ...
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4
votes
1
answer
168
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JanusGraph Data Ingestion atscale
We are ingesting data in Janusgraph on Kubernetes(GCP) using python. We are doing multithreading, node chaining, indexing but still we are able to ingest only 100k (Nodes) records in 60 minutes from ...
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4
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Janus Graph Export and Import using GraphJson
I am using the Gremlin I/O library ( GraphSONMapper + GraphSONWriter ) to export already existing Janus graph to a GraphJson.
The json file content after export is (export.json)
{
"id": {
"@...
- 41
4
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0
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772
views
how to retrieve meta properties defined for a vertex property in java code?
I am using Janus graph DB, and we have return custom vertex program to retrieve data from Janus graph , and we are using spark germling libs, I have created one vertex and define properties and for ...
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JanusGraphException: Could not execute operation due to backend exception
I'm going crazy because of this exception when starting up JanusGraph.
It happened between restarts of the gremlin-server, without even touching the configuration files.
This error always appears at ...
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4
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0
answers
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Janusgraph + Cassandra & ES cluster as backend + Spark cluster as analytics. Topology & COnfiguration?
I used the link Setup spark cluster and titan and cassandra to setup my topology. My topology is as follows:
VMs:
Number 3:
Cores 8 each
RAM 16GB each.
The following is topology of VMs, along with ...
- 1,143
4
votes
0
answers
373
views
Cassandra Titan/JanusGraph atomicity
We are planning to use combination of Cassandra and Titan/JanusGraph db as the backend for one of our projects. As part of that, I have the below requirement.
Record/Vertex A and Record/Vertex B ...
- 359
3
votes
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answers
263
views
Janusgraph with Bigtable + Elastic search backend is failing using docker 0.6.0 due to NoNode for /hbase/hbaseid in ZK
The below configuration is used to start the Janusgraph using docker janusgraph/janusgraph:0.6:
Configuration- janusgraph.properties:
gremlin.graph=org.janusgraph.core.ConfiguredGraphFactory
...
- 151
3
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Unable to configure muiltiple graphs on Janusgraph
Trying to set Janusgraph Docker with Cassandra and ES as backend. When starting with following gremlin-server.yaml configuration it comes up properly and data gets saved in (janusgraph) tables in ...
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