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Questions tagged [amazon-neptune]

For questions related to Amazon Neptune, a graph database service which supports both Property Graph and RDF graph models, as well as their respective query languages Apache TinkerPop Gremlin, openCypher and SPARQL.

Overview, Features, Pricing, Getting Started, Resources, FAQs

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Autofilling Vertex Properties in GraphMappingConfig

I am Using AWS DMS to migrate schemas from MySQL to an AWS Neptune graph database. Part of this process is writing a GraphMappingConfig.json file. There isn't much documentation, but I am wondering, is there is a way to implicitly define vertex…
Leland Reardon
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In Gremlin, is it possible to split remote/local traversal?

As Gremlin currently does not support case-insensitive predicates, I would like to experiment with the performance of running part of my traversal on a remote (in this case, Neptune) that does not support lambda steps, then "transferring" the…
chrylis -cautiouslyoptimistic-
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TimeoutError and TimeLimitExceededException when running AWS Neptune query

I have a database with about 2 million nodes and transaction connections stored in a Neptune database. I am trying two different queries with similar issues but I don't know how to solve any of them. The first query is trying to generate a 2 hop…
user110320
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Alphanumeric sorting in Gremlin

I have a database and am trying to find a safe way to read this data into an XML file. Reading the verticies is not the problem. But with the edges the app runs since a while into a HeapSpace-Exception. g.V().has(Timestamp) .order() .by(Timestamp,…
lucas
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JSON parse error: Unexpected character while running curl statement to upload file to neptune database from EC2

Any idea what's wrong with the following curl statement? I am using this to upload files to a neptune database from an EC2 instance. curl -X POST \ -H 'Content-Type: application/json' \ https://*my neptune endpoint*:8182/loader -d ' …
katseye
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Relink all the edges of a vertex Neo4j/Neptune

How can I refresh all the edges from a vertex? Use case: I have to link different entities provided by some logic and the linking needs to be refreshed periodically. One way is to delete the previous edges and then create a new ones inside a…
Vipul
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AWS Neptune Change Management

we are considering using AWS Neptune as graphdb solution. I am coming from Django world so I used to use db migrations a lot. I could not find any info about how AWS Neptune does change management on DB? ie. what happens if I want to reload a backup…
Emre Bayram
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In a graph db, is there a limit on how many node labels you can have?

I'm considering making hundreds of thousands of nodes with their own labels and connecting them to each other via millions of edges. Has this sort of thing been benchmarked anywhere with Neo4j, Dgraph, or any other graph db?
corysimmons
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Gremlin: getting json response in Java with gremlin-driver

I have the following query: g .V("user-11") .repeat(bothE().subgraph("subGraph").outV()) .times(2) .cap("subGraph") .next() When I run it using gremlin-python, I receive the following response: {'@type': 'tinker:graph', …
Franco Cuevas
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Is the none() step supported in Gremlin?

I'm building a system for composable traversals in my app and have a case where the none() step would be helpful. I need to explicitly return no traversal. It does not seem to be implemented in Gremlin javascript. "errorType": "TypeError",…
Fook
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AWS neptune throwing timeout error when th e query timeout value is higher

I am running a gremlin query on the AWS neptune which use to take 2.5 minutes for the results, I have kept my neptune_query_timeout = 500000 , the neptune engine version is 1.0.4.1 Recently I am seeing this error on my same query which just use to…
Machine_leaning_9
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How to project on multiple different node values with Gremlin

I have an performance issue when I try to get result from a projection with gremlin. My approach is for sure false. But I understand well the issue. I have a data models like : I want to get a table for all D : V1 | D.id | V2 | V3 | V4 | V5 | V6 To…
Pred05
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Unable to load empty string values for vertex and edge properties using Neptune Loader

I am unable to load empty string values for vertex and edge properties, as far as I know I am following Gremlin Load Format and providing the right request JSON to Neptune loader endpoint. This is how the vertex csv file(generated using pandas) on…
Sai Kiran
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Best way to add two vertices and an edge atomically in Gremlin

I'm using Gremlin with AWS Neptune, and trying to add 2 vertices and 1 edge atomically. I've essentially used fold() + coalesce() semantics to traverse along the way such that I keep creating the elements if not already present. This is what I've…
Pratik Agarwal
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gremlin traversal on AWS neptune

I have a graph structure like this- Node1(Console) <----Uses--- Node2(Name, Age) -----plays----> Node3(Game) So, i have three nodes - Node1 is console like a PS3/ Nintendo. Node2 is a person with properties name and Age. Node3 is game node…
Machine_leaning_9
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