Can someone help us to know how to explore janusgraph database functions used in Gremlin language and also best approach to start using and understanding janusgraph ( to create own graph data having

Hello, I am in the process of building a Java, RPC server that takes in multi-threaded requests, queries the database and returns a result to the client. I understand JanusGraph allows concurrent

Hi In my case janusgraph storage is backed by hbase and i am firing the following query: query = tx.query().has("key1","v1").has("key2","v2").limit(FIXED_VALUE) for(T element :

Correct. See https://docs.janusgraph.org/basics/schema/#relation-types

So there is no way to have a graph with a property name and an edge label with the same name?

Yeah, that's possible. You need to make sure properties and labels don't have the same name. On Tuesday, August 11, 2020 at 12:25:46 AM UTC+8 Matteo Lissandrini wrote:

I am loading a graph from scratch in an empty database. Could it be that there may be an edge label and a property name with the same name?

Are you running the code against a clean database? Does the property already exist before you run this piece of code?

Hi Boxuan, thanks for the reply. This is the full error: org.janusgraph.core.SchemaViolationException: Adding this property for key [~T$SchemaName] and value [rtns8_designation] violates a uniqueness

Thanks for the answer but putting has(“property”, true) before both(“connected”) changes the results of the query. I actually simplefied my query a bit for my question here but what I want is

Hi Veerle, Try putting both(“connected”) after has(“property”, true). Regards, Boxuan

Hi, I do have a graph with about 1 million vertexes and a many to many relation between those vertexes. The vertexes are I created a mixed index management.buildIndex(indexName, Vertex.class)

Hi Marc, I see, Thank you so much!

Hi Vayne Yang, Query failing to a DOWN node because of a wrong node selection seems unlikely because JanusGraph uses the regular cassandra/cql drivers. The similar thread below suggests to look into

Hi Marc, One more question please! When a query is sent to gremlin-server, what will the gremlin-server do with the storage backend? Is there any possible that the query is sent to a DOWN cassandra

Hi Marc, Is that means, JanusGraph itself is HA right? If so, maybe the problem is that read-consistency-level=QUORUM is too strict. Sorry I can't repeat the error immediately. if I run into this

- Janusgraph Version: 0.0.3 - Storage Backend: hbase 1.2.6 - Mixed Index Backend:elasticsearch 6.3.0 I have two partitioned vertex ,vertex id is 57402 and 30245090, and i defined a SIMPLE type edge

Hi Vayne Yang, Can you eleborate on "the query may be failed"? Is it just a warning followed by an automatic new attempt or does the query produce no result? Can you add the stacktrace? Best wishes,

hi Marc! Thanks for your reply! I am pretty sure the spaces are not the problems. e.g. https://docs.janusgraph.org/basics/example-config/#cassandra-remote configured in the same way. And after

Thx 在2020年8月6日星期四 UTC+8 下午9:56:51<HadoopMarc> 写道：