CODEWITHSUNDEEP
javagraphcassandratitan
Alexandru Vlad
Alexandru Vlad

Reputation: 11

Titan Graph data migration

I have a Java application with Cassandra 2.2.3 with Titan graph 0.5.4, and I want to migrate it to Cassandra 3.0.13. After the data migration from 2.2.3 to 3.0.13, the app doesn't start anymore with the error of 

java.lang.IllegalStateException: Could not find type for id: 630
        at com.google.common.base.Preconditions.checkState(Preconditions.java:200)

It seamed that data was corrupted, so we tried the data migration again, and again, but the same result.

Did someone try this?

Upvotes: 1

Views: 76

Answers (1)

Misha Brukman
Misha Brukman

Reputation: 13424

As you can see in the Titan 0.5.4 version compatibility chart, that version of Titan is only compatible with Cassandra 1.2.z and 2.0.z; even if you consider Titan 1.0.0 version compatibility, that will only work up to Cassandra 2.1.z .

That said, Titan is no longer supported or maintained; you may wish to upgrade to JanusGraph, which supports newer versions of Cassandra, e.g., JanusGraph versions 0.2.* and 0.3.* support Cassandra 3.0.z and 3.11.z, so that should meet your use case.

JanusGraph is a fork of Titan, so it's straight-forward to migrate from Titan to JanusGraph. For more information, see the project website and GitHub repo, which hosts releases.

Full disclosure: I am one of the founders of the JanusGraph project, and member of the project's Technical Steering Committee.

Upvotes: 1

Related Questions