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Hi Laura, The JanusGraph storage backends can store many isolated graphs (see e.g. the storage.cql.keyspace configuration property). However, it is not possible to have edges between vertices from

By HadoopMarc <bi...@...> · #5418 ·

Re: Running OLAP on HBase with SparkGraphComputer fails with Error Container killed by YARN for exceeding memory limits

Thanks Marc

By Roy Yu <7604...@...> · #5417 ·

Re: Centric Indexes failing to support all conditions for better performance.

Thank you, looking forward to have profile() with such information added. Cheers, CM

By chrism <cmil...@...> · #5414 ·

Re: Property with multiple data types

Maybe I'm completely wrong, but would I be right to say that "labels" are the equivalent of Java classes? Like, one label represents a Java class and graph properties represent a class properties? So,

By Laura Morales <laur...@...> · #5416 ·

Re: Centric Indexes failing to support all conditions for better performance.

Hi Christopher, I don't have any workaround in mind except testing and comparing query latencies. I have created https://github.com/JanusGraph/janusgraph/issues/2283 which hopefully can be addressed

By Boxuan Li <libox...@...> · #5410 ·

Re: Property with multiple data types

Thank you for your further comments. I'm still a bit confused though. Janus advertises itself as a database for huge graphs. But I'm asking myself if it means huge "homogeneous" graphs (ie. a simple

By Laura Morales <laur...@...> · #5415 ·

Re: Property with multiple data types

Hi Laura, Things are a bit different than you ask: a vertex has a single label only a property key has a single datatype only, but it can be Object.class, see

By HadoopMarc <bi...@...> · #5409 ·

Re: Is there a standard, human-friendly, serialization format?

Hi Laura, Many people use CSV for data and JSON for schemas (in other graph databases too). Not sure what will be the most "standard" or "efficient" approach, but CSV/JSON seems to be most common.

By Evgeniy Ignatiev <yevgeniy...@...> · #5413 ·

Is there a standard, human-friendly, serialization format?

All the examples that I see in the Janus documentation seem to use Groovy. Instructions such as JanusGraphFactory.open(), graph.openManagement(), mgmt.makeEdgeLabel() etc. Is there any human-friendly

By Laura Morales <laur...@...> · #5412 ·

Re: Property with multiple data types

Thank you Marc, I think it does indeed! If I understand correctly, I can use labels to "namespace" my nodes, or in other words as a way to identify subgraphs. If I have a node with 2 labels instead,

By Laura Morales <laur...@...> · #5411 ·

Re: Property with multiple data types

Hi Laura, Good that you pay close attention to understanding indices in JanusGraph because they are essential to proper use. Does the following section of the ref docs answers your

By HadoopMarc <bi...@...> · #5408 ·

Re: Centric Indexes failing to support all conditions for better performance.

Thank you Boxuan Li, It is obvious that your are an expert, is any other way apart of isFitted=true to know that index is used or not? (It may be even debugging JanusGraph server or Cassandra) We

By chrism <cmil...@...> · #5407 ·

Property with multiple data types

I'm new to Janus and LPGs. I have a question after reading the Janus documentation. As far as I understand, edges labels as well as properties (for both nodes and edges) are indexed globally. What

By Laura Morales <laur...@...> · #5406 ·

By Laura Morales <laur...@...> · #5404 ·

Re: Centric Indexes failing to support all conditions for better performance.

Hi Christopher, isFitted = true basically means no in-memory filtering is needed. If you see isFitted = false, it does not necessarily mean vertex-centric indexes are not used. It could be the case

By BO XUAN LI <libo...@...> · #5405 ·

Re: Configuring Transaction Log feature

Pawan, I was able to make your code work. the problem is "setStartTimeNow()" Instead use setStartTime(Instant.now()) and test. It works. I am yet to explore difference between two api. make sure to

By Sandeep Mishra <sandy...@...> · #5403 ·

Re: Error when running JanusGraph with YARN and CQL

Thanks a lot for responding Marc. Yes, I had initially tried setting spark.yarn.archive with the path to spark-gremlin.zip. However with this approach, the containers were failing with the message

By Varun Ganesh <operatio...@...> · #5402 ·

Re: How to improve traversal query performance

Hi Manabu, Yes, providing an example graph works much better in exploring the problem space. I am afraid, though, that I did not find much that will help you out. on a single machine with cassandra

By HadoopMarc <bi...@...> · #5401 ·

Re: Profile() seems inconsisten with System.currentTimeMillis

In the mean time I found that the difference between profile() and currentTimeMillis can be much larger. Apparently, the profile() step takes into account that for real queries, vertices are not

By HadoopMarc <bi...@...> · #5400 ·

Profile() seems inconsisten with System.currentTimeMillis

Hi, Can anyone explain why the total duration displayed by the profile() step is more than twice as large as the time difference clocked with System.currentTimeMillis? see below, For those who wonder,

By HadoopMarc <bi...@...> · #5399 ·

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