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If I run the migration first time it thinks column family already exists but it does not. I even tried dropping and recreating the keyspace. It creates the column family though but with wrong comparator type.

Here is the output:

rake ks:migrate
== PostColumnFamily: migrating ===============================================
rake aborted!
posts already exists in keyspace myapp_development

Tasks: TOP => ks:migrate
(See full trace by running task with --trace)

Here is the migration files:

class PostColumnFamily < ActiveColumn::Migration

def self.up
create_column_family :posts do |cf|
cf.comment = 'Posts column family'
cf.comparator_type = :string
end
end
def self.down
drop_column_family :posts
end

This is what it creates:

ColumnFamily: posts
"Posts column family"
  Key Validation Class: org.apache.cassandra.db.marshal.BytesType
  Default column value validator: org.apache.cassandra.db.marshal.BytesType
  Columns sorted by: org.apache.cassandra.db.marshal.BytesType

end

This may relate to issue #8.

I have developped an application with a bunch of migrations for it. I now tried to start with a completely empty database. However, running the migrations fails miserably. After creating the keyspace I tried to run the migrations.

Sometimes it threw an error claiming the column family schema_migrations already existed (which it did then, but not before I ran the migrations). Other times, it skipped that error but then claimed the first column family it tried to create already existed (same here: It didn't exist before, but after I tried to run the migrations). It seems like it attempts to run the same migration twice (don't know if that's what's actually happening though).

It may be worth noting that I encountered some strange behaviour previously when rolling back migrations. Sometimes two migrations had been reverted at once (not just one as I expected).

I already tried (multiple times):

• Dropping the respective column family and retry running the migrations
• Deleting/Recreating the ks/schema.json file
• Dropping the whole keyspace and retry running the migrations
• Dropping ALL data from cassandra and starting with a completly empty database.

I'm using cassandra 1.0.6, the twitter/cassandra gem (latest version, 0.15.0) and the latest version of your active_column gem.

Has anybody a clue what's going wrong here?
Thanks in advance

It would be great if active_column could be used in non-rails projects without using active_support.

I've been getting an error when trying to run ks:migrate. I think it's related to how the schema_migration records are stored. How should the migrations work overall? What's stored where? Are the migrations using the new schema change features of Cassandra?

Getting "can't convert SimpleUUID::UUID into String" when trying to create a row.

Environment:
Cassandra 0.8.4
Cassandra gem v0.11.4

By default cassandra gem was using simple_uuid 0.2 but looks like active_column has dependency with 0.1 so I had add gem 'simple_uuid', "~> 0.1.0 in Gemfile.

Hi i followed the following docs to make it work
https://github.com/carbonfive/active_column/blob/master/docs/Migrate.md

but when i used the command
rake ks:create

it gaved me following error

rake aborted!
undefined local variable or method `struct_fields' for #Cassandra::Keyspace:0xb6b9c830

(See full trace by running task with --trace)
i am totally clueless what to do can anybody help me out

How to define a composite type like
key_validation_class = 'CompositeType(IntegerType,TimeUUIDType)'

create column family MyCF
with comparator = 'UTF8Type'
and key_validation_class = 'CompositeType(IntegerType,TimeUUIDType)'
and default_validation_class = 'UTF8Type';

Currently this not not compatible with Cassandra 1.0 and higher. Is there already some work being done? I am happy to investigate on that.

I'll provide a pull request for my changes.