gremlin server with neo4j plugin on OSX

[Damien Seguy]

Hi all,

I work with a gremlin-server, and use tinkergraph or neo4j plugin. 

The installation i recommend is the following (3.3 also tested, with -i => installation) 

curl -o apache-tinkerpop-gremlin-server-3.2.6-bin.zip http://ftp.tudelft.nl/apache/tinkerpop/3.2.6/apache-tinkerpop-gremlin-server-3.2.6-bin.zip
unzip apache-tinkerpop-gremlin-server-3.2.6-bin.zip
mv apache-tinkerpop-gremlin-server-3.2.6 tinkergraph
rm -rf apache-tinkerpop-gremlin-server-3.2.6-bin.zip

# Optional : install neo4j engine.
cd tinkergraph
bin/gremlin-server.sh -i org.apache.tinkerpop neo4j-gremlin 3.2.6
cd ..

An installation problem is reported during the neo4j plugin install, specifically on OSX sierra and high sierra. It works well on el capitan. 

See it there : https://github.com/exakat/exakat/issues/36

Or here : 

[INFO] IndyInterface - Copying - [...snip...]exakat/tinkergraph/ext/neo4j-gremlin/plugin/neo4j-gremlin-3.2.6.jar
[INFO] DependencyGrabber$_copyTo_closure6 - Copying - [...snip...]exakat/tinkergraph/ext/neo4j-gremlin/plugin/gremlin-groovy-3.2.6.jar
[INFO] DependencyGrabber$_copyTo_closure6 - Copying - [...snip...]exakat/tinkergraph/ext/neo4j-gremlin/plugin/neo4j-tinkerpop-api-0.1.jar
Could not install the dependency: java.lang.RuntimeException: Error grabbing Grapes -- [download failed: org.neo4j#neo4j-cypher-compiler-2.2_2.11;2.2.6!neo4j-cypher-compiler-2.2_2.11.jar]
java.lang.RuntimeException: java.lang.RuntimeException: Error grabbing Grapes -- [download failed: org.neo4j#neo4j-cypher-compiler-2.2_2.11;2.2.6!neo4j-cypher-compiler-2.2_2.11.jar]

"Error grabbing Grapes" looks like some network error, but this has been persisting since mid-november. 
I also thought it would be some version, but it does work on El capitan. 
I thought it would be 3.2.5/6 version, but 3.3.0 has the same error. 

Is there anything that I am missing to make this works ? 

Best regards,

Damien Seguy.

[Robert Dale]

Can you do this and capture the output:

./bin/gremlin.sh  -l TRACE

:install org.apache.tinkerpop neo4j-gremlin 3.2.6

Robert Dale

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[Stephen Mallette]

The log would be good as Robert requested. Just a hint though that this problem almost always has something to do with your ~/.groovy/grapeConfig.xml file:

http://tinkerpop.apache.org/docs/current/reference/#gremlin-applications

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[Damien Seguy]

Thank you two for helping. It's not the first time, but it's appreciated. 

I'm getting the logs, as suggested by Robert.

On Monday, December 4, 2017 at 9:50:01 PM UTC+1, Stephen Mallette wrote:

The log would be good as Robert requested. Just a hint though that this problem almost always has something to do with your ~/.groovy/grapeConfig.xml file:

http://tinkerpop.apache.org/docs/current/reference/#gremlin-applications

Let me compare my file (which works) to the one that don't work. May be some entry is missing or could be updated.

Can I just remove it ? 

Most people installing gremlin server are doing it for the first time (I guess even groovy or maven a new to them). 

So this is quite a blank slate. I guess removing it will just make it come back, identical. 

My initial guess was that some server was not up to date with the latest *.jar. 

So I gave it a few days, but the problem is persistent. 

Robert Dale

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[Harsh Thakkar]

The same happened to me while installing the gremlin-spark 3.3.0 plugins. What I found out is that by deleting the files under ~/.groovy/grapes *and* ~/.m2/ folders solves the problem. Though I do not know the exact reason for this ;)

Execute the following commands: 

$rm -r ~/.groovy/grapes/

followed by 

$rm -r ~/.m2/

Then try to fresh install your plugins. It should do the job. 

Cheers!

Harsh

[Stephen Mallette]

Grape is such a mystery

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[Damien Seguy]

Let me try that, then.

Damien. 

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[Damien Seguy]

I confirm grape was the culprit. 

This one worked. 

$rm -r ~/.groovy/grapes/

This one was never found by the users that reported problems. (it doesn't mean its wrong, so I keep it for future usage).

$rm -r ~/.m2/

Thanks a lot.

[sai ram gopal B]

It worked for me, when I removed '.groovy' folder.

Thanks,

Sai Ram