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Re: Query requires iterating over all vertices

I was able to open my lucene folder with a tool called "luke" for peeking at the data, and all the "country" values seems to be in there. I assume by looking at this that the index was created and

By Laura Morales <lauretas@...> · #6034 ·

Re: Query requires iterating over all vertices

Unfortunately this does not seem to remove the warning. WARN org.janusgraph.graphdb.transaction.StandardJanusGraphTx - Query requires iterating over all vertices [(country <> null)]. For better

By Laura Morales <lauretas@...> · #6033 ·

Re: Query requires iterating over all vertices

Try rewriting your query as: ` g.V().has("country", P.neq(null)).values("country").dedup().order().limit(10)` FYI starting from the upcoming 0.6.0 release, has("country") will leverage the mixed

By Boxuan Li · #6032 ·

Re: Query requires iterating over all vertices

My ".properties" file: gremlin.graph=org.janusgraph.core.JanusGraphFactory storage.backend=berkeleyje storage.directory=/graph/db index.search.backend=lucene

By Laura Morales <lauretas@...> · #6031 ·

Re: Query requires iterating over all vertices

Hi, it means your query is not leveraging your indexes. Can you provide the query and also the output of `mgmt.printIndexes()` (or how you created the indices)?

By Boxuan Li · #6030 ·

Query requires iterating over all vertices

I was able to create a "Composite Index", but I cannot seem to be able to create a "Mixed Index" with berkeleyjs and lucene. What I've done: - I've modified the ".properties" file

By Laura Morales <lauretas@...> · #6029 ·

Tinkerpop 3.4.1 with Hadoop3

Hi All, I am trying to run SparkGraphComputer using tinkerpop 3.4.1 on Spark2.3 having Hadoop3 but getting issues, not able to connect with Spark. As per

By anjanisingh22@... · #6028 ·

Re: Could not execute operation due to backend exception

Thank you a lot for the help, I could not figure out what the problem was! Is it normal that the requirement is so high? 5GB of space for an empty database? And can it be changed somehow with some

By Laura Morales <lauretas@...> · #6027 ·

Re: Could not execute operation due to backend exception

Hi Laura, Down the stacktrace you can note: After some googling you can conclude that your JanusGraph disk is short of 4.7 GB of space for running JanusGraph with BerkeleyjeDB. Maybe check the logs

By hadoopmarc@... · #6026 ·

Re: What are the implications of using Object.class property type?

Hi Laura, A similar question was posed recently: https://lists.lfaidata.foundation/g/janusgraph-users/message/5986 So, 1. Only for the CompositeIndex 2. In your specific example, you could use the

By hadoopmarc@... · #6025 ·

Could not execute operation due to backend exception

What am I doing wrong? I cannot get Janus to start. $ java -version openjdk version "1.8.0_252" OpenJDK Runtime Environment (build 1.8.0_252-8u252-b09-1~deb9u1-b09) OpenJDK 64-Bit Server VM (build

By Laura Morales <lauretas@...> · #6024 ·

What are the implications of using Object.class property type?

What are the practical implications of using Object.class as a property type, instead of the other native types (eg. String.class, Integer.class, etc.)? IIUC Object.class means that a property can

By Laura Morales <lauretas@...> · #6023 ·

Re: Bulk loading

If I setup an empty graph with persistent storage, for example berkeley (thus not an in-memory graph), can I load a graphml/graphson file and have it all added to the

By Laura Morales <lauretas@...> · #6022 ·

Re: JanusGraph combined with Belief Propagation

Hi, You can first try to write a custom VertexProgram for belief propagation with Apache TinkerPop. A custom VertexProgram supports the massive message parsing needed for belief propagation. If it

By hadoopmarc@... · #6021 ·

Re: Bulk loading

Hi Laura, JanusGraph support for loading data does not go further than the Traversal API (used in https://tinkerpop.apache.org/docs/current/reference/#addvertex-step ) and the JanusGraphManagement API

By hadoopmarc@... · #6020 ·

JanusGraph combined with Belief Propagation

I'm moving from AWS Neptune architecture to JanusGraph in CentOS. Anyone has tried implementing Belief Propagation with JanusGraph?

By ganeshanvinothkumar@... · #6019 ·

Re: Janus multiple subgraphs

Hi Laura, unfortunately, you would have to handle this in your application layer. For example, you can use different labels, properties, indexes for different subgraphs.

By Boxuan Li · #6018 ·

Bulk loading

I've read the "Bulk Loading" chapter of the documentation several times but I still don't understand how to create a graph. Everything that I can find online is some Java or Groovy code. Given: 1. a

By Laura Morales <lauretas@...> · #6017 ·

Re: Very slow performance when opening a new session

Hi Roy, I can confirm your observation using the standard 'bin/janusgraph.sh start' from the full janusgraph distribution. I just used the the gremlin console with: :remote connect tinkerpop.server

By hadoopmarc@... · #6016 ·

Janus multiple subgraphs

My understanding is that a Janus server can host multiple graphs, but they are isolated and cannot be queried together. I'd like to know if/how it's possible to split one single graph into multiple

By Laura Morales <lauretas@...> · #6015 ·

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