https://github.com/sunsided/titan-docker
Yet another Titan, Cassandra and Elasticsearch in Docker Compose setup
https://github.com/sunsided/titan-docker
cassandra docker docker-compose elasticsearch graph-database gremlin tinkerpop titan
Last synced: 28 days ago
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Yet another Titan, Cassandra and Elasticsearch in Docker Compose setup
- Host: GitHub
- URL: https://github.com/sunsided/titan-docker
- Owner: sunsided
- Created: 2017-07-17T23:12:09.000Z (almost 8 years ago)
- Default Branch: master
- Last Pushed: 2017-07-18T18:59:13.000Z (almost 8 years ago)
- Last Synced: 2025-03-14T16:04:23.153Z (about 2 months ago)
- Topics: cassandra, docker, docker-compose, elasticsearch, graph-database, gremlin, tinkerpop, titan
- Language: Shell
- Homepage:
- Size: 5.86 KB
- Stars: 2
- Watchers: 2
- Forks: 3
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# Titan: Lessons learned
### Titan is dead. You want [JanusGraph](https://github.com/sunsided/janusgraph-docker) instead.
Sources for the `Dockerfile` and surroundings:
* [efaurie/docker-titan-cassandra](https://github.com/efaurie/docker-titan-cassandra)
* [elubow/titan-gremlin](https://github.com/elubow/titan-gremlin)
For multiple graphs in Titan, follow these links:
* [How many graphs can i create in one Titan DB?](https://stackoverflow.com/a/40545537/195651)
* [Serving multiple Titan graphs over Gremlin Server (TinkerPop 3)](https://medium.com/@jbmusso/serving-multiple-titan-graphs-over-gremlin-server-tinkerpop-3-d3c971d07964)
* [One graph in one Titan instance](https://jaceklaskowski.gitbooks.io/titan-scala/content/one_graph_in_one_titan_instance.html)
## Cassandra and Elasticsearch
As per [compatibility matrix](http://s3.thinkaurelius.com/docs/titan/1.0.0/version-compat.html), the supported Cassandra version is 2.1 and the supported Elasticsearch version is 1.5.
## Shell
In the Gremin REPL examples like this one:
```
$ bin/gremlin.sh
\,,,/
(o o)
-----oOOo-(3)-oOOo-----
plugin activated: tinkerpop.server
plugin activated: tinkerpop.hadoop
plugin activated: tinkerpop.utilities
plugin activated: aurelius.titan
plugin activated: tinkerpop.tinkergraph
gremlin> :remote connect tinkerpop.server conf/remote.yaml
==>Connected - localhost/127.0.0.1:8182
gremlin> :> graph.addVertex("name", "stephen")
==>v[256]
gremlin> :> g.V().values('name')
==>stephen
```
The token `:>` is not part of the _shell_, but an actual _command_. It is required to run the command on the remote server.
Also, entering invalid commands in the shell results in an exception on the server.
## Channelizers
Using the `HttpChannelizer`
```
channelizer: org.apache.tinkerpop.gremlin.server.channel.HttpChannelizer
```
allows for HTTP access to Titan using e.g.
```bash
curl "http://localhost:8182/?gremlin=100-1"
```
However, this seems to prevent the Gremlin REPL shell from talking to the server:
```
Jul 17, 2017 10:52:00 PM java.util.prefs.FileSystemPreferences$1 run
INFO: Created user preferences directory.
\,,,/
(o o)
-----oOOo-(3)-oOOo-----
plugin activated: aurelius.titan
plugin activated: tinkerpop.server
plugin activated: tinkerpop.utilities
plugin activated: tinkerpop.hadoop
plugin activated: tinkerpop.tinkergraph
gremlin> :remote connect tinkerpop.server conf/remote.yaml
22:52:14 WARN org.apache.tinkerpop.gremlin.driver.handler.WebSocketClientHandler - Exception caught during WebSocket processing - closing connection
io.netty.handler.codec.http.websocketx.WebSocketHandshakeException: Invalid handshake response getStatus: 400 Bad Request
at io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker13.verify(WebSocketClientHandshaker13.java:182)
at io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker.finishHandshake(WebSocketClientHandshaker.java:202)
at org.apache.tinkerpop.gremlin.driver.handler.WebSocketClientHandler.channelRead0(WebSocketClientHandler.java:73)
at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:308)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:294)
at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:308)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:294)
at io.netty.handler.codec.ByteToMessageDecoder.channelInactive(ByteToMessageDecoder.java:241)
at io.netty.handler.codec.http.HttpClientCodec$Decoder.channelInactive(HttpClientCodec.java:212)
at io.netty.channel.CombinedChannelDuplexHandler.channelInactive(CombinedChannelDuplexHandler.java:132)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:208)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:194)
at io.netty.channel.DefaultChannelPipeline.fireChannelInactive(DefaultChannelPipeline.java:828)
at io.netty.channel.AbstractChannel$AbstractUnsafe$5.run(AbstractChannel.java:576)
at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:380)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:357)
at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116)
at java.lang.Thread.run(Thread.java:748)
22:52:14 ERROR org.apache.tinkerpop.gremlin.driver.Handler$GremlinResponseHandler - Could not process the response - correct the problem and restart the driver.
```
The REPL shell does seem to work with the `WebSocketChannelizer` though:
```
channelizer: org.apache.tinkerpop.gremlin.server.channel.WebSocketChannelizer
```