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.
Questions tagged [amazon-neptune]
930 questions
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Getting more data on Gremlin traversal than just node id?
I'm looking to get more data back in my jupyter visualization on Neptune than just Node ID
g.V("specific-id").emit().repeat(both().simplePath()).dedup().out().path().by(T.id)
In particular, it would be nice to know the label as well and maybe any…
Ryan
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Finding outliers in Gremlin to find nodes with more than N edges?
I'm trying to figure out how to find outliers in our graph. In particular nodes with more than N edges where N could be some high number. Our graph has over 2 billion nodes. Is there an efficient way to do this?
Ryan
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How do I properly project a list of valueMap()?
I am currently trying to project several different "properties" resulting from one vertex that I have located. Figured out 1-1, where it is missing, however multiples I run into a bit of an issue.
I was able to force a representation of individual…
Joe Kennedy
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Gremlin: Find all the paths between two nodes and transform the query result into JSON format
I'm writing Gremlin python queries on a Neptune database
I want to find all the paths between a node A and a node B.
Then I would like to write the data into a JSON format that looks like this:
{ "nodes": [
{ "id": 1, "name": "A",…
question1234
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Amazon Neptune queries using Gremlin: How to solve error "Task timed out after 10.01 seconds"?
I'm trying to query my Amazon Neptune Database from a Lambda function that uses Python as the programming language.
My query is
g.V('1').out().toList()
After 10 seconds I get the error: "Task timed out after 10.01 seconds"
I tried to change the…
lalala
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How to frame this query in gremlin
I am using the Amazon Neptune graph database. I have a SQL query in Java.
select start_dt from maint_actv where rec_id = "+ Id + " and start_dt is not null limit 1
Q) How to express the "start_dt is not null" in Gremlin ?
Harish
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How can I write a conditional UPDATE STATEMENT in Gremlin
How can I write a gremlin query to update the status value to "shared" whenever the product is shared by the user. When the product isn't shared, I want the status to have a different value. Will I need to set a default and update value in the same…
Didi
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How to use neptune-export
Can someone please list out a detailed stepwise process to export data from Neptune to S3(or local storage) in form of CSV.
I followed the doc(which seems to be the only resource available online), but it is not very clear.
TIA
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How can I access the Neptune Database from my local environment using SSH tunnel?
I have both application and network load balancer. EC2 instance and the Neptune are in the same VPC group. I am able to access the EC2 instance by using ssh username@ and can access the Gremlin server there and execute queries but how can I make a…
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GraphDB complex query help in gremlin
I am new to graphdb's and gremlin and struggling with a query I need to come up with
I have users(vertex) who can be members of(edge: memberOf) a group a group(vertex), uses in that group can also like (edge: 'likes') certain foods(vertex) that…
xeroshogun
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Neptune with gremlin error when creating edge
I'm new neptune and graph dbs and trying to create a simple edge between two vertexs and getting a weird error that I don't fully understand.
const user = await g.V().has('name', 'john').next()
const group = await g.addV("group").property("name",…
xeroshogun
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GremlinPython: ConnectionResetError: Cannot write to closing transport
I am facing the below problem very often in AWS lambda - Neptune. using the latest version gremlinpython==3.5.1. How to fix? even in the previous version - same problem
user_available = g().V(cognito_username).hasNext()
File…
Thirumal
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Python/Neptune: getting a traversal object
I'm using the client.Client class from gremlin_python.driver to connect to AWS Neptune. See the following
def _prepare_request(method, url, *, data=None, params=None, headers=None, service='neptune-db'):
_ = requests.Session()
…
user1187968
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Gremlin/Neptune pagination using range() gives MemoryLimitExceededException
I have the following pagination query:
g.V().hasLabel('my-label').flatMap(out().order().by(id)).range(15000, 15299)
and I getting the following error:
[ERROR] GremlinServerError: 500:…
user1187968
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Migrate from OrientDB to AWS Neptune
I need to migrate a database from OrientDB to Neptune. I have an exported JSON file from Orient that contains the schema (classes) and the records - I now need to import this into Neptune. However, it seems that to import data into Neptune there…
Mark
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