Graph widget not working about arcadeanalytics HOT 8 OPEN

Do you have any log from the server side too? or, can tou provide scripts to create a sample db of your data?

from arcadeanalytics.

Hello !
Same problem here.

The search typed request is

g.V().limit(5)

Nothing particular in the backend end log:

2020-03-23 08:24:03.925  INFO 7 --- [ XNIO-2 task-27] c.a.p.gremlin.GremlinDataProvider        : fetching data from '1354' with query 'g.V().limit(5)
arcadeanalytics-single_1  | ' 
arcadeanalytics-single_1  | 2020-03-23 08:24:04.285  INFO 7 --- [ XNIO-2 task-27] c.a.p.gremlin.GremlinDataProvider        : fetched 5 nodes and 0 edges 

The front end properly receives a result from the search call:

Request URL: http://localhost:8080/api/widgets/data/1452
Request Method: POST
Status Code: 200 OK

The response from this call is:

{"nodesClasses":{"Act":{"iid":"String","name":"String"},"Person":{"gender":"String","birthYear":"String"}},"edgesClasses":{},"nodes":[{"classes":"Act","group":"nodes","data":{"id":"1354_5128296","parent":"","source":"","target":"","record":{"@out":{},"@edgeCount":0,"iid":"1002578","@in":{},"name":"155735"}},"position":{},"selected":"","selectable":"","locked":"","grabbable":""},{"classes":"Act","group":"nodes","data":{"id":"1354_6119560","parent":"","source":"","target":"","record":{"@out":{},"@edgeCount":0,"iid":"1007404","@in":{},"name":"229073"}},"position":{},"selected":"","selectable":"","locked":"","grabbable":""},{"classes":"Act","group":"nodes","data":{"id":"1354_6652128","parent":"","source":"","target":"","record":{"@out":{},"@edgeCount":0,"iid":"1010940","@in":{},"name":"262500"}},"position":{},"selected":"","selectable":"","locked":"","grabbable":""},{"classes":"Person","group":"nodes","data":{"id":"1354_32288896","parent":"","source":"","target":"","record":{"@out":{},"@edgeCount":0,"gender":"M","birthYear":1982,"@in":{}}},"position":{},"selected":"","selectable":"","locked":"","grabbable":""},{"classes":"Act","group":"nodes","data":{"id":"1354_13488312","parent":"","source":"","target":"","record":{"@out":{},"@edgeCount":0,"iid":"1043282","@in":{},"name":"688133"}},"position":{},"selected":"","selectable":"","locked":"","grabbable":""}],"edges":[],"truncated":false}

This seems to be a front end issue ?
Any idea on how to fix ?
Thx

from arcadeanalytics.

Hi again !
After some times it works.
It takes some time to load the nodesClasses (12 min).
Is it aa problem specific to Janusgraph ?
Maybe the call to get the graph metadata could be optimized ?

from arcadeanalytics.

The metadata provider for Gremlin is here:

https://github.com/ArcadeData/arcade-connectors/blob/master/gremlin/src/main/kotlin/com/arcadeanalytics/provider/gremlin/GremlinMetadataProvider.kt

We developed and tested on small databases. How big is your db?

from arcadeanalytics.

Hi
Thx for the feedback.

My graph is not very big.. The order of magnitude is 100k vertices and edges.

Quickly looking at your code, it seems to me that the count methods on the node and edge counts might take longer, as it requires traversing the whole graph.
Actually counting nodes and edges in janus without relying on indexes is tricky from my (little) experience.

Could the counts be done asynchronously and update the meta when or if the result arrives?

Also I think the functions mapNodeClasses and mapEdgeClasses may take a while, again because of traversing the whole graph.

Maybe looking at the management Api might be relevant for getting the labels.

from arcadeanalytics.

Here for the management Api : https://stackoverflow.com/a/49404838/7634184

from arcadeanalytics.

Thanks for pointing us to that. This implies to write a dedicated MetadataProvider for Janus that uses the custom api.

from arcadeanalytics.

Actually this may be a generic issue related to gremlin servers, see for instance https://stackoverflow.com/a/48946734/7634184

The frustrating point is that the view won't work without the Metadata.

It would be nice if (part) of the widget could be used without completion of the Metadata call.. I'm thinking for instance to the custom query widget, that doesn't really need the Metadata to run..

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