All Questions
Tagged with janusgraph indexing
13
questions
0
votes
0
answers
37
views
Issue while creating Vertex Centric Index (Relation Index) on edge property
Janusgraph version => 0.6.1
Tinkerpop version =>3.5.1
Usign Janusgraph in the embedded library mode and not in server mode.
I am trying to create vertex centric index(es) on existing edge ...
- 33
0
votes
1
answer
166
views
How To Create Vertex Index For Remote GraphTraversalSource
Problem
How do you make Vertex Indexes with traversal().withRemote("conf/remote-graph.properties")?
Questions
Do I have to create a org.apache.tinkerpop.gremlin.structure.Graph?
Graph graph ...
- 735
1
vote
1
answer
270
views
How does Edge Index differ from Relation Index in janusGraph or are they the same?
I am quite new to janusgraph and I am in the process of indexing my graph.
Through the process I have discovered that we could index the edges like we index vertices.
FYI : I am indexing vertices ...
0
votes
1
answer
81
views
What index we should create for group by() queries in janus?
I have a sample use case in janus where student and skills are my nodes.
For a given student, I need to find similar student based on most skill overlap.
I have written the following gremlin query,
...
2
votes
1
answer
560
views
Janusgraph not using index in production
Problem
When performing queries in my production environment, the index is not being used and a full scan is performed, but my development environment works fine and uses the index.
After looking ...
- 3,412
0
votes
1
answer
179
views
How much time does Janusgraph takes approximately to reindex if it has around 70G data
I have around 70G data in Janusgraph. I have planned to add a new index on the edge. Approximately how much time it could take to reindex?
- 11
0
votes
1
answer
243
views
Index created successfully, but won't reindex new data
I'm totally bamboozled, since this code was working previously.
I'm trying to create a Mixed Edge index on an edge property in my graph (trxn_dt_int).
It shows, from the output of mgmt.printSchema()...
- 3,830
1
vote
1
answer
186
views
Difficulties using Janusgraph indexes with Gremlin UNION
I have an issue using UNION operator: in this first example the query works but gives no result:
g.V().has('name','Barack Obama').union(has('name','Michelle Obama'))
Instead in this second example ...
2
votes
0
answers
278
views
How to understand "Vertex-centric indexes cannot speed up unconstrained traversals of a particular label."
In the JanusGraph document, I got the following description:
"JanusGraph automatically builds vertex-centric indexes per edge label and property key. That means, even with thousands of incident ...
- 121
2
votes
0
answers
374
views
Janusgraph returns "Unknown external index backend: search " building mixed index with elasticsearch in Gremlin
When I attempt to create a mixed index in janusgraph 0.3.0 via Gremlin and Gremlin server I get the "Unknown external index backend: search " error. Elasticsearch is running and I believe ...
- 41
1
vote
1
answer
621
views
How does index work in JanusGraph database, when we have two columns with two different indexes
I am using JanusGraph 0.2.0 version. I have following two indexes in my graph.
mgmt = graph.openManagement()
keyName = mgmt.getPropertyKey('propertyKeyA')
labelName = mgmt.getVertexLabel('labelA')
...
- 475
0
votes
1
answer
93
views
What index is needed to answer a disjunct (__.or) query?
I want to find a set of User vertices that match a given search string. These vertices have four String properties to match against - FIRST_NAME, LAST_NAME, DISPLAY_NAME and EMAIL. My query is ...
- 1,493
3
votes
2
answers
1k
views
JanusGraph:Some key(s) on index verticesIndex do not currently have status REGISTERED
I have some questions when I build a JanusGraph Mixed index.
This is my code:
mgmt = graph.openManagement();
idx = mgmt.getGraphIndex('zhh1_index');
prop = mgmt.getPropertyKey('zhang');
mgmt....
- 73