Titan 0.9.0-M2 Release

[Dan LaRocque]

Ladies and Gentlemen,

Aurelius is pleased to release Titan 0.9.0-M2. 0.9.0-M2 is an
experimental release intended for development use.

This release uses TinkerPop 3.0.0.M9-incubating, compared with 3.0.0.M6
in Titan 0.9.0-M1. Source written against Titan 0.5.x and earlier will
generally require modification to compile against Titan 0.9.0-M2. As
TinkerPop 3 requires a Java 8 runtime, so too does Titan 0.9.0-M2.

While 0.9.0-M1 came out with a separate console and server zip archive,
0.9.0-M2 is a single zipfile with both components. The zipfile is still
only packaged with Hadoop 1 to match TP3's Hadoop support.

http://s3.thinkaurelius.com/downloads/titan/titan-0.9.0-M2-hadoop1.zip

Documentation:

Manual: http://s3.thinkaurelius.com/docs/titan/0.9.0-M2/
Javadoc: http://titan.thinkaurelius.com/javadoc/0.9.0-M2/

The upgrade instructions and changelog for 0.9.0-M2 are in the usual
places.

http://s3.thinkaurelius.com/docs/titan/0.9.0-M2/upgrade.html
http://s3.thinkaurelius.com/docs/titan/0.9.0-M2/changelog.html

Please enjoy the release and share feedback,
The Titan Team

[Daniel Mau]

Awesome, super excited for the new functionality and API from TP3!

Based on the Upgrade Instructions page, my understanding is that existing Cassandra data directories that work with Titan 0.5.x will no longer work, and porting data would definitely require a full export and reimport (i.e. sequence file, graphson, etc.), correct?

Thanks again for such great work!

-Daniel

[Matthias Broecheler]

Hello Daniel,

note that the milestone releases are only meant for evaluation and feedback but not production use.

That said, expect that Titan 1.0 (i.e. the final GA release) will not be backwards compatible.

Best,

Matthias

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[manish kumar]

That said, expect that Titan 1.0 (i.e. the final GA release) will not be backwards compatible.

 

So we shall keep our app ready for more changes in future as titan will grow or let say till it doesn't reach to a level of maturity ?

[Matthias Broecheler]

Titan 1.0 will be a stable release

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[Valdemar Johansen]

Is support for Cassandra 2.1 in the pipeline for 1.0?

[JK]

Excellent news! Good progress guys... can't wait for 1.0 and DSE Graph.

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[Matthias Broecheler]

I have added a ticket for 2.1 support. We will see if we can get enough QA test coverage on that.

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[Michael Woytowitz]

Any information or speculation on a date for Titan 0.9 GA ?    Titan 1.0 GA ?

thanks

Michael

[Adam Phelps]

Is the Titan 1.0 release going to be data-compatible with the Titan
0.5.X versions? ie will we be able to switch to that release without
having to rebuild our entire DB?

- Adam

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[Matthias Broecheler]

TinkerPop3 is in the process of releasing TP3 GA. Once that is out we will make the necessary adjustments in Titan and prepare the Titan 1.0 GA. Based on the currently available information you should expect Titan 1.0 to show up in/around August.

Unfortunately, Titan 1.0 will require a data migration from the 0.5.x line. However, moving forward all Titan 1.x releases will be data compatible.

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[ivaylo frankov]

Hello,

Would you mind to tell me if this example :

class SimpleExample { 
  static {
    Gremlin.load()
  }
  public List exampleMethod() {
    Graph g = TinkerGraphFactory.createTinkerGraph()
    def results = []
    g.v(1).out('knows').fill(results)
    return results
  }
}

Will be possible in TP3 and how can I read TitanGraph  : Is it possilbe to say Graph  g = TitanGraph(myGraph)

Thank you very much in advance,
Ivo

[Raj Desikavinayagompillai]

Hello Dan,

Sounds great and quick question on Titan Roadmap. Can you let us know if Titan team (Aurelius)  will continue to support new functionalities or is this the last major release?

[Gou Canran]

Awesome, will 0.9 include connector to spark?

在 2015年6月9日星期二 UTC+2上午8:37:07，Dan LaRocque写道：

[Christine Li]

Hi, Matthias

Great news. Will Titan 1.0 GA be released as an Apache project?

Thanks,

[Mike Frampton]

 
Sorry to ask some probably very simple questions but titan-0.9.0-M2-hadoop1.zip is only configured for hadoop1 .. what does that mean ? It cant be used with Yarn or CDH 5.x clusters ?

Also, I saw a question below about Apache Spark, given that Titan now uses Tinkerpop is it possible to access the graph from Titan using Spark GraphX in some way ?

I already knew and have managed to access the underlying Titan 5.4 graph tables using both HBase and Casandra but I would be interested to actually access graph info using Spark
is this now possible ?

[Daniel Kuppitz]

Hi Mike,

only Hadoop 1 is supported, because - for now - that's the only Hadoop version supported by TP3.

And yes, you can now use Spark: http://tinkerpop.incubator.apache.org/docs/3.0.0-incubating/#sparkgraphcomputer

Cheers,

Daniel

[Stephen Mallette]

That example looks like TinkerPop 2 syntax which means that you can use that with Titan 0.5.4:

class SimpleExample { 
  static {
    Gremlin.load()
  }
  public List exampleMethod() {
    Graph g = TitanFactory.open(...)
    def results = []
    g.v(1).out('knows').fill(results)
    return results
  }
}

Titan 0.9 implements the TinkerPop 3 interfaces so anything you do with TinkerPop 3 should work with that version of Titan.

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