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Questions tagged [rexster]

Rexster is a high-performance graph server that allows you to access any Blueprints graph through from any programming language through its binary protocol or its HTTP/REST API.

Rexster is a high-performance graph server that allows you to access any Blueprints graph from any programming language through its binary protocol called RexPro or its HTTP/REST API.

You query Rexster with the graph-traversal language Gremlin, and you can extend Rexster to support custom server-side algorithms for graph searching, scoring, ranking, and recommendation.

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Can't access rexster interface via browser -- connection refused

I have installed the complete "Titan 0.5.2 with Hadoop 2" package in a docker container. I am able to run gremlin, load the sample graph database, and interact with it via the command line, but I'm unable to access the rexster interface via my…
Lauren Wolfe
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Rexster refuses to start with extension but does not display errors

I have a small Rexster/Titan cluster using Cassandra. A Rexster extension is used to query the graph. I did some benchmarking and did start and stop Rexster/Titan many times. But now I run into a strange issue: Rexster refuses to start but does not…
Sebastian Schlicht
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Verbose Rexster output/logging on error `null`

I use Titan in a small Ubuntu server cloud with size 3 and deployed a Rexster extension to to $TITAN_HOME/ext. However, if I try to call an endpoint of the extension I get {"message":"An error occurred while generating the response…
Sebastian Schlicht
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Getting exception backtrace and output in Rexster console

I have a setup with Titan 0.5.2 running with Rexster. When I use the rexster console to run some code on the Titan side and exception happens, I get only short message like: ==>An error occurred while processing the script for language [groovy].…
StasM
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Neo4j2 and Rexster?

This feels like a really basic, stupid question. I've got a graph in Neo4j 2.1.5. It's a toy graph, so it was created with the defaults. I built the Neo4j2 version of Blueprints, as instructed. I can get Rexster to start with this…
betseyb
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Titan BluePrints Rexster

Revision: I have a stand-alone version of Cassandra. I launch that using the following command: ./cassandra -f I also have a Java Application that the Titan Graph Library installed. To obtain a TitanGraph object I use the following…
NCALSTEVE
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How to summarize property values in Gremlin?

I'm quite new to Gremlin and have now spent hours trying to figure out how to calculate the values for a given property in all my vertices. This g.V('containerName','MyContainer').outE.inV.'(0)Probability' gives me: {"results":[" 3"," 3"," 3","…
agiledevpro
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User defined gremlin step works in gremlin, but not in rexster

I am trying to determine the cause of what seems to be a discrepancy in the way rexster handles user defined Gremlin queries, compared with the gremlin shell. I am using: rexster-server-2.6.0; gremlin-groovy-2.5.0; orientdb-community-1.7.9; I have…
phonybone
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How can I run a large gremlin script in rexster console?

I'm using Orientdb and rexster. I have a rather large script file which includes vertices and edges upserts. when I try to run my script like: rexster-console.sh -rh localhost -rp 8984 -e /tmp/script I get the following…
Sina
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Create/Retrieve/Update/Delete using Java and Rexster

I want to manage a graph (create, delete and update vertexes and edges) remotely using Java. I have all my DAO layer implemented, using Blueprints and a TitanGraph object to access and manipulate graph information. I thought that installing Rexster…
angelcervera
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titan rexster with external cassandra instance

I have a cassandra cluster (2.1.0) running fine. After installing titan 5.1, and editing the titan-cassandra.properties to point to cluster hostname list rather than localhost, i run following - titan.sh -c conf/titan-cassandra.properties start It…
chappalprasad
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Rexster visualization not enabled by default?

I was going by the Rexster wiki https://github.com/tinkerpop/rexster/wiki/The-Dog-House - there seems to be a visualization button available out of the box. But when i start up with version 2.6 - I can't find it anywhere.I can browse vertices and…
Achow
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Rexster passing values to functions defined in scripts

I have a script named /tmp/scripts/a.gremlin which contains a single function filterOver. def filterOver(age) { return g.V.filter{it.age > age} } My rexster configuration conf/rexster-cassandra.xml contains the correct extensions…
Cathal Coffey
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Configure Rexster to use Titan

I'm trying to configure Rexster to use Titan by modifying the rexster.xml file in Rexster. But when I run http ://localhost:8182/graphs/mygraph in my browser I get a message saying: {"message":"Graph [mygraph] could not be found"}. This is the…
agiledevpro
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Why does Rexster show "titangraph[cassandra:null]" even though its connected?

When I connect to Titan via the Gremlin console it says... titangraph[cassandra:127.0.0.1] Rexster however says... titangraph[cassandra:null] even though I can browse the same set of vertices. Why is this? Rexster makes it look as though it hasn't…
Ian Warburton
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