Questions tagged [tinkerpop]
Apache TinkerPop™ is a graph computing framework for both graph databases (OLTP) and graph analytic systems (OLAP).
tinkerpop
182
questions with no upvoted or accepted answers
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 ...
- 329
6
votes
0
answers
1k
views
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 ...
- 141
6
votes
2
answers
756
views
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 ...
- 626
4
votes
1
answer
750
views
CosmosDB: Gremlin Query to create a new property using existing property
Each vertex has a structure:
{
Id: 123,
field1: 10
}
I want to add field2 to all the vertices such that field2 has its value equal to field1.
The challenge is that almost all the queries I ...
- 303
4
votes
0
answers
1k
views
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
votes
0
answers
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 ...
- 8,979
4
votes
1
answer
793
views
Gremlin Python: Count vertices and its children in one query
I am trying to get the count of all vertices with a particular label and all its children in one query like so:
g.V().hasLabel('folder').has('folder_name', 'root').as_('a', 'b').select('a', 'b').by(...
- 469
3
votes
0
answers
245
views
Janusgraph SimplePath query is slower on 6 node vs 3 node Cassandra cluster
I am currently using Janusgraph version 0.5.2. I have a graph with about 18 million vertices and 25 million edges.
I have two versions of this graph, one backed by a 3 node Cassandra cluster and ...
- 91
3
votes
0
answers
580
views
How do I create vertex centric index in JanusGraph
I am trying to build vertex centric Index in Janusgraph.
foo = mgmt.makePropertyKey('foo').dataType(String.class).cardinality(org.janusgraph.core.Cardinality.SINGLE).make();
foo_bar = mgmt....
- 502
3
votes
1
answer
699
views
Comparing properties in Gremlin
I have a simple graph, with parents and children being vertices.
Parents have the relationship "isParentOf" to their children.
The vertices all have one property: the "familyName".
I want to use ...
- 223
2
votes
1
answer
345
views
Gremlin console how to remote connect behind a proxy
I am using gremlin console to interact with an Azure Cosmos database as explained in this Microsoft quickstart tutorial. However I am behind a corporate proxy and the command :remote connect ...
- 21
2
votes
1
answer
683
views
Turn gremlin query result with elementMap into JSON [gremlinpython 3.6.1]
Continuing discussion from here.
I've a query that provides list of paths along-with elementMap().
How do I convert this data to JSON to be consumed by rest of the code.
I did look here that talks ...
- 11.3k
2
votes
0
answers
316
views
Connecting to JanusGraph using ConfiguredGraphFactory
I'm trying to figure out how to connect to JanusGraph server from SpringBoot.
JanusGraph was setup with Cassandra and ElasticSearch to run in docker and as each instance of JanusGraph only serves one ...
- 41
2
votes
0
answers
730
views
JanusGraph docker compose environment
I'm trying to setup JanusGraph using docker compose using the following lines in a docker-compose.yml file
janusgraph:
image: janusgraph/janusgraph:latest
environment:
JANUS_CONFIG_DIR: /...
2
votes
1
answer
820
views
How to use Gremlin to get both node properties and edge names in one query?
I have been thrown into a pool of golang / gremlin / Neptune, and am able to get some things to work. Life is good - enough, but I am hoping there is a simple answer (which I have not been able to ...
- 21