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
894
questions
0
votes
1
answer
19
views
Gremlin query to find path of vertices for the common value of vertex but different vertex
I am trying to write a query to find all path between 2 given vertices
will give an example to understand my question, here's graph like that, I'm using JanusGraph
Vertex_1(id=1, value='Bob', label='...
0
votes
0
answers
34
views
JanusGraph traversal returns Vertex instead of JanusGraphVertex
I'm using Java to connect to JanusGraph 1.0. I'm having trouble understanding why JanusGraph would ever return a Vertex.
JanusGraph graph = JanusGraphFactory.open('configfile');
JanusGraphVertex jgv = ...
- 1,216
0
votes
0
answers
18
views
JanusGraph edges from Java do not appear in Gremlin console
I'm running a JanusGraph server and client per the instructions here. I included an argument to expose port 8182 so I can connect to it from a Java application.
My Java application just creates a new ...
- 1,216
-1
votes
0
answers
20
views
JanusGraph from Java can't find the remote-objects.yaml file
I'm trying to connect to a JanusGraph server running in a docker container. I can connect just fine from the gremlin console. To connect from a Java app I'm following the directions here. mvn package ...
- 1,216
1
vote
1
answer
23
views
Is JanusGraph virtual partition same as Cassandra partition?
I'm trying to design custom graph partitioning for my use case.
As per the JanusGraph documentation, the number of partition can be configured.
The configuration option max-partitions controls how ...
- 125
0
votes
0
answers
14
views
Janiusgraph 1.0 Data location
I am using Janusgraph 1.0 docker janusgraph/janusgraph:1.0.0, I have done configuration in janusgraph-cql-es.properties to point it to Cassandra as storage.backend and ES as index.search.backend.
...
- 187
1
vote
1
answer
38
views
How to resolve "Unclosed client session" from aiohttp
I'm pulling data from an API and populating Janusgraph DB running in the docker container per the installation site:
docker run --name janusgraph-default janusgraph/janusgraph:latest
The python ...
- 1,216
0
votes
0
answers
18
views
How to recover deleting PropertyKey from Schema (NullPointerException)
I removed a PropertyKey from the schema that was already linked to some nodes. I get a NullPointerException every time I try and scan over properties of these nodes - elementMap(), valueMap() and drop(...
- 356
1
vote
1
answer
45
views
Why can vertices be added to JanusGraph, but adding attributes to that vertex throws a SerializationException?
Steps to Reproduce:
Start JanusGraph server using default configuration.（open janusgraph-full-1.0.0\bin\gremlin.bat）
Connect to the server using the Gremlin Console.（open janusgraph-full-1.0.0\bin\...
- 71
1
vote
0
answers
112
views
Apache atlas UI not showing up
I am trying to install apache atlas from source. I have cloned the repo from https://github.com/apache/atlas and built the source and then packaged it using mvn clean -DskipTests package -Pdist.
I ...
- 1,335
1
vote
0
answers
31
views
Cannot update edgeTTL in JanusGraph
I'm using JanusGraph-1.0.0 with Cassandra-4.1.3. By using JanusGraphManagement, I am able to set edge TTL. However, I cannot update the edge TTL later.
I have created an edge label and with mgmt....
- 125
1
vote
0
answers
38
views
JanusGraph gremlin crashes when adding many history properties
I am adding a vertex with a very large number of properties (17 properties and 1500 history entries in each). At first, there was a recursion error at startup. I fixed it, took out the next() method ...
- 111
0
votes
1
answer
46
views
Using Janusgraph (Java in-memory implementation), how can I commit property keys before creating an index?
I'm prototyping a java project using Janusgraph and have run into a problem. If I create a property key and commit that property key before an index is created, the index appears to be stuck in the ...
- 31
0
votes
0
answers
20
views
Export JanusGraph graph image into Excel
I'm using JanusGraph in Jupyter Notebook. I'm currently looking to export my results into Excel. I'm able to export out the data, but not the graph image itself.
At the moment, I'm just manually cut/...
1
vote
1
answer
31
views
How to identify the configured keyspace using JanusGraph APIs?
While going through https://docs.janusgraph.org/v0.5/basics/configuration-reference/ , I found that for key storage.cassandra.keyspace,
The name of JanusGraph's keyspace. It will be created if it ...
- 103