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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 many databases per instance in JanusGraph? How is security configured between databases?

I am looking for information about databases per instance in JanusGraph and couldn't find proper documentation for it. The main concern in the security boundary between the databases in one instance. Let's say there are 2 databases in one instance…
rookie
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Can we write stored procedures in IBM graph or JanusGraph? Are they ACID compliant?

I know the basics of how IBM graph and JanusGraph works. Can we write stored procedures for these? Also, are they ACID compliant?
rookie
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Generalizing DynamoDB + JanusGraph Factory: Lock and Schema Problems

I'm working on generalizing the DynamoDB + JanusGraph tutorial from AWS such that, given a standard .txt file with a standard convention, the program can ingest the data (as a Triple) and create the vertices, properties, and edges. Normally I…
acs254
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Facing operation timeout issue when trying to connect with remote hosted Cassandra via gremlin Hadoop

I'm following the JanusGraph documentation to run OLAP gremlin queries with the help of Tinker-pop's Hadoop gremlin. I'm able to execute queries when using locally hosted Cassandra, But facing issue when using remotely hosted Cassandra. The spark…
Nageswara Rao Rayala
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Why `.as()`.step used before `.fold()` is not able to use/refer after `.fold()` in apache Gremlin?

Why .as().step used before .fold() is not able to use/refer after .fold() in apache Gremlin? Eg: g.V().hasLabel('country').has('name', 'Japan').fold() .coalesce(__.unfold(), __.addV('country').property('name', 'Japan')).as('country') …
Thirumal
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How can I set array as property in janusgraph?

I want to set the property for vertex and edge as a list value. I'm using janusgraph. Gremlin-python
Abhishek Borse
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How to solve java.lang.ClassNotFoundException: org.apache.tinkerpop.gremlin.spark.structure.io.gryo.GryoSerializer

I am using tinkerpop + Janus Graph + Spark build.gradle compile group: 'org.apache.tinkerpop', name: 'spark-gremlin', version: '3.1.0-incubating' below is some critical configuration that we have spark.serializer:…
Bravo
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Any graphical interface of JanusGraph Gremlin Query

Currently, I'm executing my gremlin query via apache-tinkerpop-gremlin-console - this is command interface. I'm looking for some graphical interface where I can pass all my attributes and relation - which should from a gremlin query and retrieve the…
learn groovy
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How to know whether there is a vertex called 'A' with data in it?

Actually I want to test my query on console. For that I need static data. Can I know that there is a data present or not in a particular vertex. If not I am able to keep the static data but in my vertex, I have property called 'location' which is of…
Himabindu
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Graphloader for JanusGraph

I am building a small graph DB by hand, which will undergo many changes as the graph grows. To maintain the graph in edge and vertex CSV files. I currently have a python script which reads the edge and vertex files and loads the data one element at…
Akarsh
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Wanna get label name but return id,if need change gremlin sentence?

When using gremlin console to connect gremlin server run gremlin> graph=ConfiguredGraphFactory.open('test'); mgmt=graph.openManagement();mgmt.getVertexLabels() will return: ==>person ==>animal but when using the same gremlin sentence in java…
l.chq
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A graph database with embedded code in node

Does anyone know if there is any graph database platform, or system, in which one could embed a code in a node? For example, can one embed codes in a node in JanusGraph?
Pedro
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how to get the count of employees having same skill and same location using gremlin query

eq:in hyd ofc location how many employees have java skill, in vizag ofc location how many employees have java skill like wise it should check the skillname, employee and diff locations and get count of emp from ea ch location
user19442466
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How to delete the property of all the vertices with the same label name?

I am having vertices with label name as Campaign. And having a property campaignType and the property value is offline for all the vertices. I unexpectedly updated the schema with out building the index for campaignType. But I needed this very badly…
Himabindu
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Retrieve different labeled vertices, AND/OR between vertices properties

below is my graph g.addV('user').property('userId','user1').as('u1'). addV('user').property('userId','user2').as('u2'). addV('user').property('userId','user3').as('u3'). addV('group').property('groupId','group1').as('g1'). …
VT0906
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