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cdegroc

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•Created by karthikraju on 10/15/2024 in #questions

Unable to use text predicates like 'textContains' in gremlin python

To use JanusGraph-specific predicates, you would need to swap gremlin-python with janusgraph-python I believe: https://github.com/JanusGraph/janusgraph-python#text-predicates Can you give this a try?

3 replies

JJanusGraph

•Created by b4lls4ck on 8/23/2024 in #questions

Speeding up Queries Made to JanusGraph

Thanks Florian for chiming in. I had overlooked that option!

29 replies

JJanusGraph

•Created by b4lls4ck on 8/23/2024 in #questions

Speeding up Queries Made to JanusGraph

You can start Gremlin Console from a dedicated JanusGraph container or even JanusGraph server itself (https://docs.janusgraph.org/v0.3/basics/server/#connecting-to-gremlin-server)

# Start gremlin console
$ ./bin/gremlin.sh

# Connect to a remote JanusGraph server (configured in /etc/remote.yaml in this case)
gremlin> :remote connect tinkerpop.server /etc/remote.yaml session

# Enter remote console mode and send all commands to the server
gremlin> :remote console

# Now you can access open management
...

# Start gremlin console
$ ./bin/gremlin.sh

# Connect to a remote JanusGraph server (configured in /etc/remote.yaml in this case)
gremlin> :remote connect tinkerpop.server /etc/remote.yaml session

# Enter remote console mode and send all commands to the server
gremlin> :remote console

# Now you can access open management
...

29 replies

JJanusGraph

•Created by b4lls4ck on 8/23/2024 in #questions

Speeding up Queries Made to JanusGraph

Technically, I think so (afaik). A grpc endpoint was added to JanusGraph 1.0 but does not yet support index management (https://github.com/JanusGraph/janusgraph/tree/master/janusgraph-grpc#todo-1). But, it doesn't mean that you need to implement something yourself. You could start a Gremlin Console and update indexes from there using Groovy.

29 replies

JJanusGraph

•Created by b4lls4ck on 8/23/2024 in #questions

Speeding up Queries Made to JanusGraph

I would suggest that you create a Graph Index first. Since your condition does an exact match on "Bob", you can use a Composite Index. Indexes cannot be created from Python (AFAIK) but only through JanusGraph management interface. We have sample commands in the doc showing how to create one: https://docs.janusgraph.org/schema/index-management/index-performance/#composite-index

29 replies

JJanusGraph

•Created by b4lls4ck on 8/23/2024 in #questions

Speeding up Queries Made to JanusGraph

👋🏻 Hey. Your traversals g.V().has("person", "name", "Bob").outE("knows").has("weight", P.gte(0.5)).inV().values("name").toList() could probably benefit from different indexes. Without a Graph Index (https://docs.janusgraph.org/schema/index-management/index-performance/#graph-index), the first part g.V().has("person", "name", "Bob") has to filter through all vertices to find the ones with property value "Bob". Then, without a Vertex Centric Index (https://docs.janusgraph.org/schema/index-management/index-performance/#vertex-centric-indexes), JanusGraph needs to filter all of the matching vertices' "knows" out edges - .outE("knows") - to find the ones with a weight >= 0.5 - .has("weight", P.gte(0.5)).

29 replies

JJanusGraph

•Created by cdegroc on 2/20/2024 in #questions

Concurrent updates during a REINDEX

Thank you both! 🙇🏻

16 replies

JJanusGraph

•Created by cdegroc on 2/20/2024 in #questions

Concurrent updates during a REINDEX

Also, as a follow-up, my understanding of the code is that a REINDEX does not clear the existing index data and will only reindex what's currently in the backend's edgestore. Is that correct? I imagine for such cases the work in https://github.com/JanusGraph/janusgraph/issues/1099 could help.

16 replies

JJanusGraph

•Created by cdegroc on 2/20/2024 in #questions

Concurrent updates during a REINDEX

Thanks Boxuan. I'm trying to link that to the code. IIUC this is because keys are iterated and SliceQueries are built/emitted on the fly as the job is making progress. Is that right?

16 replies

ATApache TinkerPop

•Created by cdegroc on 1/17/2024 in #questions

LazyBarrierStrategy/NoOpBarrierStep incompatible with path-tracking

fi: thought I'd try mvn clean install -DskipIntegrationTests=false -DincludeNeo4j as well and it also succeeds 100% with the change

12 replies

JJanusGraph

•Created by cdegroc on 1/12/2024 in #questions

TreeStep and MultiQuery support

FI started this TinkerPop thread: https://discord.com/channels/838910279550238720/1197157803907874829/1197157803907874829

10 replies

ATApache TinkerPop

•Created by cdegroc on 1/17/2024 in #questions

LazyBarrierStrategy/NoOpBarrierStep incompatible with path-tracking

when you say "path tracking is enabled", you mean a step with TraverserRequirement.PATH is part of the path, right? Just to make sure I'm not misunderstanding.

12 replies

ATApache TinkerPop

•Created by cdegroc on 1/17/2024 in #questions

LazyBarrierStrategy/NoOpBarrierStep incompatible with path-tracking

Gremlin Spark was failing due to my corp VPN (i.e. https://stackoverflow.com/questions/52133731/how-to-solve-cant-assign-requested-address-service-sparkdriver-failed-after). But now that I turned it off, all tests are passing. My local diff (compared to master branch) is just

diff --git a/gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/strategy/optimization/LazyBarrierStrategy.java b/gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/strategy/optimization/LazyBarrierStrategy.java
index 1a51ea0685..c8b96d88cd 100644
--- a/gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/strategy/optimization/LazyBarrierStrategy.java
+++ b/gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/strategy/optimization/LazyBarrierStrategy.java
@@ -82,7 +82,7 @@ public final class LazyBarrierStrategy extends AbstractTraversalStrategy<Travers
         // which made it so that a Property is equal if the key/value is equal. as a result, they bulk together which
         // is fine for almost all cases except when you wish to drop the property.
         if (TraversalHelper.onGraphComputer(traversal) ||
-                traversal.getTraverserRequirements().contains(TraverserRequirement.PATH) ||
+//                traversal.getTraverserRequirements().contains(TraverserRequirement.PATH) ||
                 TraversalHelper.hasStepOfAssignableClass(DropStep.class, traversal)||
                 TraversalHelper.hasStepOfAssignableClass(ElementStep.class, traversal))
             return;

diff --git a/gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/strategy/optimization/LazyBarrierStrategy.java b/gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/strategy/optimization/LazyBarrierStrategy.java
index 1a51ea0685..c8b96d88cd 100644
--- a/gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/strategy/optimization/LazyBarrierStrategy.java
+++ b/gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/strategy/optimization/LazyBarrierStrategy.java
@@ -82,7 +82,7 @@ public final class LazyBarrierStrategy extends AbstractTraversalStrategy<Travers
         // which made it so that a Property is equal if the key/value is equal. as a result, they bulk together which
         // is fine for almost all cases except when you wish to drop the property.
         if (TraversalHelper.onGraphComputer(traversal) ||
-                traversal.getTraverserRequirements().contains(TraverserRequirement.PATH) ||
+//                traversal.getTraverserRequirements().contains(TraverserRequirement.PATH) ||
                 TraversalHelper.hasStepOfAssignableClass(DropStep.class, traversal)||
                 TraversalHelper.hasStepOfAssignableClass(ElementStep.class, traversal))
             return;

So it could also be that this is not tested or that another factor prevents us from hitting this condition.

12 replies

ATApache TinkerPop

•Created by cdegroc on 1/17/2024 in #questions

LazyBarrierStrategy/NoOpBarrierStep incompatible with path-tracking

Thanks Stephen. I actually ran unit tests for more than that, incl. Gremlin Test and TinkerGraph Gremlin.

[INFO] Apache TinkerPop ................................... SUCCESS [  2.470 s]
[INFO] Apache TinkerPop :: Gremlin Language ............... SUCCESS [  8.322 s]
[INFO] Apache TinkerPop :: Gremlin Shaded ................. SUCCESS [  0.784 s]
[INFO] Apache TinkerPop :: Gremlin Core ................... SUCCESS [ 24.712 s]
[INFO] Apache TinkerPop :: Gremlin Annotations ............ SUCCESS [  3.797 s]
[INFO] Apache TinkerPop :: Gremlin Test ................... SUCCESS [  9.908 s]
[INFO] Apache TinkerPop :: TinkerGraph Gremlin ............ SUCCESS [01:43 min]
[INFO] Apache TinkerPop :: Gremlin Groovy ................. SUCCESS [01:09 min]
[INFO] Apache TinkerPop :: Gremlin Util ................... SUCCESS [  3.524 s]
[INFO] Apache TinkerPop :: Gremlin Tools .................. SUCCESS [  0.052 s]
[INFO] Apache TinkerPop :: Gremlin Socket Server .......... SUCCESS [  5.887 s]
[INFO] Apache TinkerPop :: Gremlin Driver ................. SUCCESS [ 27.232 s]
[INFO] Apache TinkerPop :: Gremlin Server ................. SUCCESS [01:37 min]
[INFO] Apache TinkerPop :: Gremlin Python ................. SUCCESS [  0.095 s]
[INFO] Apache TinkerPop :: Gremlin.Net .................... SUCCESS [  0.565 s]
[INFO] Apache TinkerPop :: Gremlin.Net - Source ........... SUCCESS [  0.571 s]
[INFO] Apache TinkerPop :: Gremlin.Net - Tests ............ SUCCESS [  0.193 s]
[INFO] Apache TinkerPop :: Gremlin Go ..................... SUCCESS [  0.062 s]
[INFO] Apache TinkerPop :: Hadoop Gremlin ................. SUCCESS [01:11 min]
[INFO] Apache TinkerPop :: Spark Gremlin .................. FAILURE [ 21.574 s]
...

[INFO] Apache TinkerPop ................................... SUCCESS [  2.470 s]
[INFO] Apache TinkerPop :: Gremlin Language ............... SUCCESS [  8.322 s]
[INFO] Apache TinkerPop :: Gremlin Shaded ................. SUCCESS [  0.784 s]
[INFO] Apache TinkerPop :: Gremlin Core ................... SUCCESS [ 24.712 s]
[INFO] Apache TinkerPop :: Gremlin Annotations ............ SUCCESS [  3.797 s]
[INFO] Apache TinkerPop :: Gremlin Test ................... SUCCESS [  9.908 s]
[INFO] Apache TinkerPop :: TinkerGraph Gremlin ............ SUCCESS [01:43 min]
[INFO] Apache TinkerPop :: Gremlin Groovy ................. SUCCESS [01:09 min]
[INFO] Apache TinkerPop :: Gremlin Util ................... SUCCESS [  3.524 s]
[INFO] Apache TinkerPop :: Gremlin Tools .................. SUCCESS [  0.052 s]
[INFO] Apache TinkerPop :: Gremlin Socket Server .......... SUCCESS [  5.887 s]
[INFO] Apache TinkerPop :: Gremlin Driver ................. SUCCESS [ 27.232 s]
[INFO] Apache TinkerPop :: Gremlin Server ................. SUCCESS [01:37 min]
[INFO] Apache TinkerPop :: Gremlin Python ................. SUCCESS [  0.095 s]
[INFO] Apache TinkerPop :: Gremlin.Net .................... SUCCESS [  0.565 s]
[INFO] Apache TinkerPop :: Gremlin.Net - Source ........... SUCCESS [  0.571 s]
[INFO] Apache TinkerPop :: Gremlin.Net - Tests ............ SUCCESS [  0.193 s]
[INFO] Apache TinkerPop :: Gremlin Go ..................... SUCCESS [  0.062 s]
[INFO] Apache TinkerPop :: Hadoop Gremlin ................. SUCCESS [01:11 min]
[INFO] Apache TinkerPop :: Spark Gremlin .................. FAILURE [ 21.574 s]
...

12 replies

JJanusGraph

•Created by cdegroc on 1/12/2024 in #questions

TreeStep and MultiQuery support

Thanks for your quick answer. I can see this requirement was added long ago. I will review TinkerPop tests, and then ask questions on the TinkerPop discord.

10 replies

JJanusGraph

•Created by cdegroc on 1/12/2024 in #questions

TreeStep and MultiQuery support

Even though unit tests are green, I imagine this could be breaking some traversal types I haven't tried or am not used to. @rngcntr, since you're the original author of this change (https://github.com/JanusGraph/janusgraph/pull/2516/files#diff-e1f91b256e6c63d882f9b043cbfa4d264c15299c52bae1b845dcd90b8beadabbR239-R252), would you remember why MultiQuery optimizations were disabled for Path-based traversals by any chance? 🙇🏻

10 replies

JJanusGraph

•Created by cdegroc on 1/12/2024 in #questions

TreeStep and MultiQuery support

👋🏻 Hey. This worked and the traversal now leverages multiQuery, resulting in a nice performance improvement in my tests.

10 replies

JJanusGraph

•Created by cdegroc on 1/12/2024 in #questions

TreeStep and MultiQuery support

Thanks! That's worth a try! 👀

10 replies

JJanusGraph