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Questions tagged [datastax-enterprise-graph]

DataStax Enterprise Graph is a scalable, enterprise-ready graph database.

DataStax Enterprise Graph is a scalable, enterprise-ready graph database capable of storing and querying graphs with billions of elements while providing enterprise features such as security, monitoring, advanced management, encryption and 24/7 support.

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Java DSE GraphFrame API does not fully support going from GraphTraversal to DataFrame

The Java DSE GraphFrame API does not fully support going from GraphTraversal to DataFrame. The following GraphTraversal to DataFrame is possible: gf().E().df() However this does not: gf().E().hasLabel("foo").df() This is because hasLabel()…
Glide
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Specify an edgeLabel in graphML that tinkerpop can understand

I have been struggling to load a graphml in to Tinkerpop3. Graph graphMLGraph = TinkerGraph.open(); graphMLGraph.io(IoCore.graphml()).readGraph(file.getAbsolutePath()); While loading, I want the the edges to have a…
Sathyakumar Seshachalam
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Detect Cycles in a DSE graph

Using TinkerPop3 as the interface to a DSE graph. Is there any easy way to detect cycles in a graph or rather not visit an already visited vertex. Specifically in my case, There is a "GROUP" vertex and there can be a group of groups. I will like to…
Sathyakumar Seshachalam
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filter by Id of a Vertex

I am trying to use a filter step to filter vertices by id, but unsure of how to do this. Here is roughly what I am trying to do. g.V().has(label, 'Users').filter(id().is(eq("Users:77287168:1051"))) g.V().has(label,…
Sathyakumar Seshachalam
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DSE graph modify vertex properties,

So its not obvious from the javadocs on how to modify properties of a Vertex after adding into graph. I tried TinkerPop way. GraphTraversalSource g = DseGraph.traversal(dseSession); g.V().toStream().forEach(vertex -> vertex.property("name",…
Sathyakumar Seshachalam
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DSE Graph Database "Is" relation representation in groovy

I am having difficulty, in understanding this Graph. I understand that Org and Persons are vertices and 'has vendor','Has Customer' and 'Has Employee' are the Edges, but i am not able to understand what is meant by "isMerchant" here in the…
Suresh
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Always 1 Gremlin Worker Threads Active in DSE Graph

In my DSE cluster I have these settings: threadPoolWorker = 32 and gremlinPool = 64 However, when I run any kind of gremlin query (heavy queries too), I always see from the Dashboard of the OpsCenter that at most only 1 per node Worker thread is…
Mr_Destruction
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DataStax Graph Native API vs Fluent API

i have tried both the native api and fluent api for datastax graph in java. i found fluent api more readable since it resembles java's OOP. Native api has less readability in java since basically strings are being appended to create the entire…
Aditya S
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DSE Backup failure after upgrade

Good morning, We recently process to the upgrade of our DSE cluster, from 5.0.7 to 5.1. We followed the upgrade procedure and everything seemed to be OK. But since that upgrade, the backup of our keyspaces fails every time. The detail says "Mismatch…
Nicolas Delaforge
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dse graph 5.1, nodejs driver, no load balancing of gremlin queries

I'm using datastax enterprise graph 5.1. My backend service (nodejs based) interacts with the dse graph using the datastax nodejs driver. My Datastax graph is deployed on a cluster consisting of two datacenters, and each datacenter has two nodes.…
Toufic Zayed
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Unable to start DSE Graph on reset Cassandra

I am testing DSE Graph (using DSE 5.0.7) a on a single node and managed to corrupt it completely. As a result I wiped out all the data files with the intention of rebuilding everything from scratch. On the first restart of Cassandra I forgot to…
PDH
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Create graph using data stored in DSE Cassandra

I am new to DSE graphs. I have around 1000 records in a csv file, where each record has around 20 attributes, which I want to load in gremlin. All the records would form a separate vertex in the graph. Is there a way to directly load all the…
Daksh Agarwal
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DSE graph same vertex part of two vertex labels?

In my case there are two vertex labels : User, Seller. Register user create new vertex using custom vertex id : g.addV(label,'User', 'id', '123456789', 'name', 'User1').next(); When user login and if he register a new business then he become…
user2572801
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Datastax enterprise graph schema design and cluster sizing

Please advise on following 1)Based on - https://www.datastax.com/dev/blog/dse-5-0-3-released-huge-performance-gains-for-graph-analytics where bench-marking is done with each node having 256 GB disk and 256 GB of RAM. Does this mean that entire data…
Tilak
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Cassandra Startup Error: DseModule.java:103 - org/apache/spark/util/ByteBufferInputStream. Exiting

I installed Cassandra, DSE after working on DSE Graphs for a while I installed Spark, R. Now I am unable to start DSE. Cassandra process is not starting I tried disabling Spark and so on. Not sure whats the issue! $ /Users/212500500/dse_510/bin/dse…
Darshan Mehta
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