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Hi Joe, > The java code talks directly to cassandra via the Janusgraph library. Should I be using a Gremlin server instead? I see, so you are using embedded JanusGraph. It has less overhead compared

By Boxuan Li · #6556 ·

Re: Graph corruption?

Hi Joe, I just wanted to check a few things: 1. Did you happen to enable `storage.batch-loading`? See https://docs.janusgraph.org/operations/bulk-loading/#batch-loading 2. IIRC you are using

By Boxuan Li · #6555 ·

Re: Graph corruption?

Joe, See https://groups.google.com/g/janusgraph-users/c/foaqfG-MB5E/m/tsNnkhPtBwAJ for a discussion on perhaps the same issue you are running into. Long story short, it appears you have a unique

By Kevin Schmidt · #6554 ·

Graph corruption?

Hi all - I'm seeing this from a recent graph I built: gremlin> :> g.V(4162).valueMap() ==>{source=[DS_106], sourceName=[GDELTRecord3]} gremlin> :> g.V(4146).valueMap() ==>{source=[DS_106],

By Joe Obernberger · #6553 ·

Re: Getting Edges - Performance

Hi Boxuan - Cluster is a 15 node cassandra cluster: nodetool status Datacenter: datacenter1 ======================= Status=Up/Down |/

By Joe Obernberger · #6552 ·

Re: Threaded Operations - Quarkus

Gotcha. The recommended way is to use TinkerPop API to do CRUD operations, i.e. GraphTraversalSource.addV() is recommended as it is considered the “standard” way. The `addV` method inherently

By Boxuan Li · #6551 ·

Re: Getting Edges - Performance

Your Cassandra statistics shows pretty low latency, so the problem does not seem to be related to Cassandra. I would check if it’s a network problem. It might also be helpful if you could provide

By Boxuan Li · #6550 ·

Re: Getting Edges - Performance

One thing of note is the tablehistogram for the graphindex table: nodetool tablehistograms graphsource.graphindex graphsource/graphindex histograms Percentile Read

By Joe Obernberger · #6549 ·

Re: Poor load balancing in 0.5.3

I suspect this is an issue with gremlin java-driver. I just reported here: https://issues.apache.org/jira/browse/TINKERPOP-2766 I believe you should provide all hostnames for now. Best regards, Boxuan

By Boxuan Li · #6548 ·

Re: Getting Edges - Performance

Thank you Boxuan - the code (REST service) that is modifying the graph is being called continuously when running. A slow example looks like this: Metrics: Traversal Metrics Step

By Joe Obernberger · #6547 ·

Re: Getting Edges - Performance

Profiler documentation is available here: https://tinkerpop.apache.org/docs/current/reference/#profile-step Can you do traversal.E().has("edgeID", edgeID).profile().next() and paste the output (when

By Boxuan Li · #6546 ·

Re: Getting Edges - Performance

Looking for documentation on how to do profile() - do you have any? Queries like this are also slow: Edge dataSourceToCorrelationEdge = traversal.E().has("edgeID",

By Joe Obernberger · #6545 ·

Poor load balancing in 0.5.3

Hi folks, From what we are seeing in the gremlin driver code, it is expected that all gremlin server host names are provided and not a VIP. Is that correct? For example, Cluster cluster =

By Doug Whitfield · #6544 ·

Re: Threaded Operations - Quarkus

Sorry for the delay. When a request comes in via REST, Quarkus creates a thread to handle it; I believe it actually comes from a thread pool. This code now does:

By Joe Obernberger · #6543 ·

Re: Getting Edges - Performance

It's very suspicious. It shouldn't take 3 seconds just to load 3 edges. Can you provide theprofile() output here when you see such slowness? It is also worth trying if other queries (e.g. loading a

By Boxuan Li · #6542 ·

Re: Threaded Operations - Quarkus

When you say use JanusGraph.tx().createdThreadedTx() directly, what do you mean? Can you give an example?

By Boxuan Li · #6541 ·

Re: Getting Edges - Performance

It's usually small; typically around 3 edges. Reading your article(https://li-boxuan.medium.com/janusgraph-deep-dive-part-3-speed-up-edge-queries-3b9eb5ba34f8). Outbound edges could be

By Joe Obernberger · #6540 ·

Re: Getting Edges - Performance

When it takes over 3 seconds to return, how many edges does it return?

By Boxuan Li · #6539 ·

Getting Edges - Performance

Hi All - I'm seeing a performance issue with this statement in Java code: Iterator<Edge> edgeIt = vert.edges(Direction.IN); in some cases this is taking over 3 seconds to return. What can I do to

By Joe Obernberger · #6538 ·

Re: Threaded Operations - Quarkus

Thanks for all the help on this. I'm coming closer to a solution thanks to you all. Question - I've been using GraphTraversalSource to do all the adding vertices and edges to my graph.

By Joe Obernberger · #6537 ·

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