On 5/16/13 10:22 PM, Todd Fast wrote:
Mutagen Cassandra is a framework providing schema versioning and
mutation for Apache Cassandra. It is similar to Flyway for SQL databases.
https://github.com/toddfast/mutagen-cassandra
Mutagen is a lightweight framework for applying versioned changes (known
as mutations) to a resource, in this case a Cassandra schema. Mutagen
takes into account the resource's existing state and only applies
changes that haven't yet been applied.
Hi Todd,
Looking at your code and you have the ColumnPrefixDistributedRowLock
commented out. Could it be that the mutation is taking longer than a
second to run? Are they only happening during testing simultaneous
updates? Maybe they aren't being cleaned up?
Funny timing, I'm working on porting Scala Migrations [1] to Cassandra
and have a working implementation. It's not as fancy as Scala
Migrations (it doesn't scan a package for migration subclasses and it
currently doesn't do rollbacks) but it gets the basics done. Hoping to
release code in the near future.
Differences from Mutagen:
1) Mutations are written only in Scala.
2) Since its a new project, it uses a Java Driver session instead of a
Astyanax connection since I only intend to use CQL3 tables.
Blair
[1] http://code.google.com/p/scala-migrations/
